./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/down.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 04d6fb36 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/down.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 d487f6cb836d5c7294168f7ececc6a4515780c0860389f79570a9c0e20e7bcc0 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 18:42:10,547 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 18:42:10,616 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 18:42:10,623 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 18:42:10,624 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 18:42:10,649 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 18:42:10,650 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 18:42:10,651 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 18:42:10,651 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 18:42:10,652 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 18:42:10,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 18:42:10,655 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 18:42:10,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 18:42:10,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 18:42:10,656 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 18:42:10,656 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 18:42:10,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 18:42:10,656 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 18:42:10,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 18:42:10,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 18:42:10,657 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 18:42:10,659 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 18:42:10,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 18:42:10,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 18:42:10,660 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 18:42:10,660 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 18:42:10,660 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 18:42:10,660 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 18:42:10,661 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 18:42:10,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 18:42:10,661 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 18:42:10,661 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 18:42:10,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 18:42:10,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 18:42:10,662 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 18:42:10,662 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 18:42:10,662 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 18:42:10,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 18:42:10,662 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 18:42:10,662 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 18:42:10,663 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 18:42:10,663 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 18:42:10,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d487f6cb836d5c7294168f7ececc6a4515780c0860389f79570a9c0e20e7bcc0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-15 18:42:10,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 18:42:10,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 18:42:10,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 18:42:10,982 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 18:42:10,983 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 18:42:10,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/down.i [2024-09-15 18:42:12,512 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 18:42:12,703 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 18:42:12,703 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/down.i [2024-09-15 18:42:12,712 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/aa2e98377/1808c86c49a148b4a0a2831b3e4afb30/FLAGf5fe1dba4 [2024-09-15 18:42:12,727 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/aa2e98377/1808c86c49a148b4a0a2831b3e4afb30 [2024-09-15 18:42:12,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 18:42:12,732 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-15 18:42:12,734 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 18:42:12,735 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 18:42:12,739 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 18:42:12,740 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 06:42:12" (1/1) ... [2024-09-15 18:42:12,740 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d0b86b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:12, skipping insertion in model container [2024-09-15 18:42:12,741 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 06:42:12" (1/1) ... [2024-09-15 18:42:12,757 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 18:42:12,891 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/down.i[893,906] [2024-09-15 18:42:12,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 18:42:12,927 INFO L200 MainTranslator]: Completed pre-run [2024-09-15 18:42:12,937 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/down.i[893,906] [2024-09-15 18:42:12,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 18:42:12,959 INFO L204 MainTranslator]: Completed translation [2024-09-15 18:42:12,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:12 WrapperNode [2024-09-15 18:42:12,960 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 18:42:12,961 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 18:42:12,962 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 18:42:12,962 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 18:42:12,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:12" (1/1) ... [2024-09-15 18:42:12,984 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:12" (1/1) ... [2024-09-15 18:42:12,992 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-15 18:42:12,992 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 18:42:12,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 18:42:12,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 18:42:12,993 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 18:42:13,008 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:12" (1/1) ... [2024-09-15 18:42:13,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:12" (1/1) ... [2024-09-15 18:42:13,009 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:12" (1/1) ... [2024-09-15 18:42:13,021 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]. [2024-09-15 18:42:13,021 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:12" (1/1) ... [2024-09-15 18:42:13,022 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:12" (1/1) ... [2024-09-15 18:42:13,023 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:12" (1/1) ... [2024-09-15 18:42:13,025 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:12" (1/1) ... [2024-09-15 18:42:13,029 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:12" (1/1) ... [2024-09-15 18:42:13,030 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:12" (1/1) ... [2024-09-15 18:42:13,031 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 18:42:13,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 18:42:13,031 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 18:42:13,032 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 18:42:13,033 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:12" (1/1) ... [2024-09-15 18:42:13,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 18:42:13,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:13,084 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) [2024-09-15 18:42:13,097 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 [2024-09-15 18:42:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 18:42:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-15 18:42:13,139 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-15 18:42:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-15 18:42:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-15 18:42:13,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-15 18:42:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 18:42:13,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 18:42:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-15 18:42:13,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-15 18:42:13,216 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 18:42:13,218 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 18:42:13,358 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-15 18:42:13,360 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 18:42:13,382 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 18:42:13,382 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-15 18:42:13,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 06:42:13 BoogieIcfgContainer [2024-09-15 18:42:13,383 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 18:42:13,385 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 18:42:13,385 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 18:42:13,387 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 18:42:13,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 06:42:12" (1/3) ... [2024-09-15 18:42:13,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f8f30e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 06:42:13, skipping insertion in model container [2024-09-15 18:42:13,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:12" (2/3) ... [2024-09-15 18:42:13,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f8f30e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 06:42:13, skipping insertion in model container [2024-09-15 18:42:13,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 06:42:13" (3/3) ... [2024-09-15 18:42:13,391 INFO L112 eAbstractionObserver]: Analyzing ICFG down.i [2024-09-15 18:42:13,405 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 18:42:13,406 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-15 18:42:13,458 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 18:42:13,465 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;@4da62ea1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 18:42:13,466 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-15 18:42:13,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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) [2024-09-15 18:42:13,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-15 18:42:13,475 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:13,476 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:13,476 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:13,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:13,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1421332849, now seen corresponding path program 1 times [2024-09-15 18:42:13,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:13,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780675534] [2024-09-15 18:42:13,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:13,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:13,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:13,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:42:13,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:13,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780675534] [2024-09-15 18:42:13,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780675534] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 18:42:13,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 18:42:13,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 18:42:13,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671550314] [2024-09-15 18:42:13,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 18:42:13,618 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-15 18:42:13,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:13,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-15 18:42:13,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 18:42:13,636 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-09-15 18:42:13,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:13,652 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2024-09-15 18:42:13,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-15 18:42:13,655 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 12 [2024-09-15 18:42:13,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:13,659 INFO L225 Difference]: With dead ends: 34 [2024-09-15 18:42:13,659 INFO L226 Difference]: Without dead ends: 16 [2024-09-15 18:42:13,662 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 [2024-09-15 18:42:13,664 INFO L434 NwaCegarLoop]: 19 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, 19 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 [2024-09-15 18:42:13,665 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 18:42:13,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-15 18:42:13,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-15 18:42:13,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2024-09-15 18:42:13,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-09-15 18:42:13,689 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2024-09-15 18:42:13,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:13,690 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-09-15 18:42:13,690 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-09-15 18:42:13,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:13,691 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-09-15 18:42:13,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-15 18:42:13,691 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:13,691 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:13,692 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 18:42:13,692 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:13,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:13,692 INFO L85 PathProgramCache]: Analyzing trace with hash -676380277, now seen corresponding path program 1 times [2024-09-15 18:42:13,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:13,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028053705] [2024-09-15 18:42:13,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:13,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:13,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:42:13,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:13,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028053705] [2024-09-15 18:42:13,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028053705] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 18:42:13,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 18:42:13,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-15 18:42:13,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360147147] [2024-09-15 18:42:13,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 18:42:13,798 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 18:42:13,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:13,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 18:42:13,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 18:42:13,800 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2024-09-15 18:42:13,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:13,849 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-09-15 18:42:13,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 18:42:13,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 12 [2024-09-15 18:42:13,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:13,851 INFO L225 Difference]: With dead ends: 28 [2024-09-15 18:42:13,851 INFO L226 Difference]: Without dead ends: 17 [2024-09-15 18:42:13,852 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 18:42:13,853 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:13,854 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 18:42:13,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-15 18:42:13,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-09-15 18:42:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2024-09-15 18:42:13,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-09-15 18:42:13,858 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2024-09-15 18:42:13,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:13,858 INFO L474 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-09-15 18:42:13,859 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2024-09-15 18:42:13,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:13,859 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-09-15 18:42:13,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-15 18:42:13,860 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:13,860 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:13,860 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-15 18:42:13,860 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:13,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:13,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1610812905, now seen corresponding path program 1 times [2024-09-15 18:42:13,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:13,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566357544] [2024-09-15 18:42:13,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:13,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:13,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:13,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:42:13,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:13,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566357544] [2024-09-15 18:42:13,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566357544] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:13,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976925079] [2024-09-15 18:42:13,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:13,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:13,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:13,973 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) [2024-09-15 18:42:13,975 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 18:42:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:14,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-15 18:42:14,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:42:14,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 18:42:14,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976925079] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 18:42:14,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 18:42:14,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-09-15 18:42:14,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022857485] [2024-09-15 18:42:14,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 18:42:14,125 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-15 18:42:14,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:14,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-15 18:42:14,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-15 18:42:14,126 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-09-15 18:42:14,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:14,188 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-09-15 18:42:14,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 18:42:14,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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 13 [2024-09-15 18:42:14,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:14,190 INFO L225 Difference]: With dead ends: 29 [2024-09-15 18:42:14,190 INFO L226 Difference]: Without dead ends: 27 [2024-09-15 18:42:14,191 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-09-15 18:42:14,192 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:14,192 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 42 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 18:42:14,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-15 18:42:14,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2024-09-15 18:42:14,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 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) [2024-09-15 18:42:14,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-09-15 18:42:14,199 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 13 [2024-09-15 18:42:14,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:14,199 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-09-15 18:42:14,199 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-09-15 18:42:14,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:14,200 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-09-15 18:42:14,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-15 18:42:14,200 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:14,200 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:14,218 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:14,404 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:14,405 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:14,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:14,405 INFO L85 PathProgramCache]: Analyzing trace with hash -2016151891, now seen corresponding path program 1 times [2024-09-15 18:42:14,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:14,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394311332] [2024-09-15 18:42:14,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:14,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:14,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:14,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-15 18:42:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:42:14,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:14,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394311332] [2024-09-15 18:42:14,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394311332] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:14,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970369485] [2024-09-15 18:42:14,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:14,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:14,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:14,555 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) [2024-09-15 18:42:14,561 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 18:42:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:14,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-15 18:42:14,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:42:14,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:42:14,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970369485] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:14,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:14,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2024-09-15 18:42:14,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120321867] [2024-09-15 18:42:14,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:14,663 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-15 18:42:14,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:14,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-15 18:42:14,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-15 18:42:14,664 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2024-09-15 18:42:14,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:14,695 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-09-15 18:42:14,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-15 18:42:14,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 20 [2024-09-15 18:42:14,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:14,697 INFO L225 Difference]: With dead ends: 38 [2024-09-15 18:42:14,697 INFO L226 Difference]: Without dead ends: 24 [2024-09-15 18:42:14,697 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-15 18:42:14,698 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:14,698 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 18:42:14,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-15 18:42:14,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-15 18:42:14,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 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) [2024-09-15 18:42:14,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-09-15 18:42:14,703 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2024-09-15 18:42:14,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:14,703 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-09-15 18:42:14,703 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2024-09-15 18:42:14,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:14,703 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-09-15 18:42:14,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-15 18:42:14,704 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:14,704 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:14,717 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:14,904 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:14,905 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:14,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:14,905 INFO L85 PathProgramCache]: Analyzing trace with hash -723625159, now seen corresponding path program 2 times [2024-09-15 18:42:14,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:14,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290806324] [2024-09-15 18:42:14,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:14,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:14,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:14,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 18:42:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:14,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:42:14,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:14,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290806324] [2024-09-15 18:42:14,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290806324] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:14,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123133958] [2024-09-15 18:42:14,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:42:14,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:14,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:14,993 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) [2024-09-15 18:42:15,001 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 18:42:15,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:42:15,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:15,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-15 18:42:15,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:42:15,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:15,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:42:15,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123133958] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:15,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:15,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-09-15 18:42:15,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590383798] [2024-09-15 18:42:15,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:15,139 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-15 18:42:15,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:15,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-15 18:42:15,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-15 18:42:15,140 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 18:42:15,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:15,176 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2024-09-15 18:42:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-15 18:42:15,176 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-09-15 18:42:15,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:15,177 INFO L225 Difference]: With dead ends: 37 [2024-09-15 18:42:15,177 INFO L226 Difference]: Without dead ends: 35 [2024-09-15 18:42:15,178 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-09-15 18:42:15,178 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:15,178 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 53 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 18:42:15,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-15 18:42:15,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2024-09-15 18:42:15,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 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) [2024-09-15 18:42:15,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2024-09-15 18:42:15,183 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 21 [2024-09-15 18:42:15,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:15,183 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2024-09-15 18:42:15,183 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 18:42:15,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:15,184 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2024-09-15 18:42:15,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-15 18:42:15,184 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:15,185 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:15,201 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-15 18:42:15,388 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:15,389 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:15,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:15,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1797415755, now seen corresponding path program 3 times [2024-09-15 18:42:15,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:15,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844654940] [2024-09-15 18:42:15,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:15,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:15,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:15,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 18:42:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:15,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-15 18:42:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:15,468 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 18:42:15,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:15,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844654940] [2024-09-15 18:42:15,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844654940] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:15,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718929611] [2024-09-15 18:42:15,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 18:42:15,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:15,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:15,470 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) [2024-09-15 18:42:15,471 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 18:42:15,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-15 18:42:15,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:15,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-15 18:42:15,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 18:42:15,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 18:42:15,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718929611] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:15,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:15,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2024-09-15 18:42:15,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092599983] [2024-09-15 18:42:15,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:15,590 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-15 18:42:15,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:15,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-15 18:42:15,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-09-15 18:42:15,592 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-15 18:42:15,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:15,628 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2024-09-15 18:42:15,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-15 18:42:15,628 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2024-09-15 18:42:15,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:15,629 INFO L225 Difference]: With dead ends: 49 [2024-09-15 18:42:15,629 INFO L226 Difference]: Without dead ends: 32 [2024-09-15 18:42:15,630 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-09-15 18:42:15,630 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:15,630 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 18:42:15,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-15 18:42:15,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-15 18:42:15,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 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) [2024-09-15 18:42:15,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-09-15 18:42:15,641 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 28 [2024-09-15 18:42:15,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:15,641 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-09-15 18:42:15,642 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-15 18:42:15,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:15,642 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-09-15 18:42:15,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-15 18:42:15,643 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:15,643 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:15,659 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:15,847 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:15,848 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:15,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:15,849 INFO L85 PathProgramCache]: Analyzing trace with hash -554337321, now seen corresponding path program 4 times [2024-09-15 18:42:15,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:15,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896934966] [2024-09-15 18:42:15,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:15,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:15,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:15,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 18:42:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:15,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-15 18:42:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 18:42:15,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:15,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896934966] [2024-09-15 18:42:15,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896934966] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:15,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728055395] [2024-09-15 18:42:15,939 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 18:42:15,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:15,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:15,940 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) [2024-09-15 18:42:15,942 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-15 18:42:15,973 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 18:42:15,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:15,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-15 18:42:15,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 18:42:16,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:16,078 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 18:42:16,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728055395] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:16,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:16,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2024-09-15 18:42:16,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632459791] [2024-09-15 18:42:16,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:16,080 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-15 18:42:16,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:16,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-15 18:42:16,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-09-15 18:42:16,080 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-15 18:42:16,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:16,125 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-09-15 18:42:16,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-15 18:42:16,128 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2024-09-15 18:42:16,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:16,129 INFO L225 Difference]: With dead ends: 45 [2024-09-15 18:42:16,129 INFO L226 Difference]: Without dead ends: 43 [2024-09-15 18:42:16,129 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-15 18:42:16,130 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:16,130 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 72 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 18:42:16,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-15 18:42:16,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-09-15 18:42:16,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 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) [2024-09-15 18:42:16,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-09-15 18:42:16,135 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 29 [2024-09-15 18:42:16,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:16,135 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-09-15 18:42:16,135 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-15 18:42:16,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:16,136 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-09-15 18:42:16,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-15 18:42:16,136 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:16,136 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:16,150 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:16,337 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-15 18:42:16,337 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:16,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:16,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1807807725, now seen corresponding path program 5 times [2024-09-15 18:42:16,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:16,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640214549] [2024-09-15 18:42:16,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:16,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:16,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:16,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 18:42:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:16,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-15 18:42:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:16,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-15 18:42:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 18:42:16,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:16,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640214549] [2024-09-15 18:42:16,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640214549] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:16,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279615540] [2024-09-15 18:42:16,441 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 18:42:16,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:16,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:16,443 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) [2024-09-15 18:42:16,444 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-15 18:42:16,477 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-15 18:42:16,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:16,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-15 18:42:16,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 18:42:16,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:16,574 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 18:42:16,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279615540] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:16,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:16,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 12 [2024-09-15 18:42:16,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671236896] [2024-09-15 18:42:16,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:16,575 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-15 18:42:16,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:16,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-15 18:42:16,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-09-15 18:42:16,576 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-15 18:42:16,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:16,618 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2024-09-15 18:42:16,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-15 18:42:16,618 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2024-09-15 18:42:16,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:16,619 INFO L225 Difference]: With dead ends: 60 [2024-09-15 18:42:16,619 INFO L226 Difference]: Without dead ends: 40 [2024-09-15 18:42:16,620 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 72 SyntacticMatches, 8 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-09-15 18:42:16,620 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:16,620 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 18:42:16,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-15 18:42:16,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-15 18:42:16,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 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) [2024-09-15 18:42:16,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-09-15 18:42:16,626 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 36 [2024-09-15 18:42:16,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:16,626 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-09-15 18:42:16,627 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-15 18:42:16,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:16,627 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-09-15 18:42:16,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-15 18:42:16,628 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:16,628 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:16,641 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-15 18:42:16,828 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:16,829 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:16,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:16,829 INFO L85 PathProgramCache]: Analyzing trace with hash -597114503, now seen corresponding path program 6 times [2024-09-15 18:42:16,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:16,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765117478] [2024-09-15 18:42:16,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:16,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:16,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:16,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 18:42:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:16,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-15 18:42:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:16,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-15 18:42:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:16,957 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 18:42:16,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:16,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765117478] [2024-09-15 18:42:16,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765117478] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:16,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300119976] [2024-09-15 18:42:16,957 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 18:42:16,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:16,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:16,965 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) [2024-09-15 18:42:16,974 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-15 18:42:17,012 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-15 18:42:17,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:17,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-15 18:42:17,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:17,081 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 18:42:17,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 18:42:17,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300119976] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:17,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:17,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-09-15 18:42:17,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949606133] [2024-09-15 18:42:17,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:17,169 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-15 18:42:17,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:17,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-15 18:42:17,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-15 18:42:17,170 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-15 18:42:17,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:17,217 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2024-09-15 18:42:17,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-15 18:42:17,217 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2024-09-15 18:42:17,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:17,218 INFO L225 Difference]: With dead ends: 53 [2024-09-15 18:42:17,218 INFO L226 Difference]: Without dead ends: 51 [2024-09-15 18:42:17,218 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 75 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-09-15 18:42:17,219 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:17,219 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 59 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 18:42:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-15 18:42:17,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2024-09-15 18:42:17,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 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) [2024-09-15 18:42:17,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2024-09-15 18:42:17,224 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 37 [2024-09-15 18:42:17,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:17,224 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2024-09-15 18:42:17,225 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-15 18:42:17,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:17,225 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2024-09-15 18:42:17,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-15 18:42:17,226 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:17,226 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:17,239 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:17,429 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:17,430 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:17,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:17,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1686402315, now seen corresponding path program 7 times [2024-09-15 18:42:17,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:17,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548058656] [2024-09-15 18:42:17,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:17,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:17,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:17,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 18:42:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:17,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-15 18:42:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:17,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-15 18:42:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:17,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 18:42:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:17,538 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 18:42:17,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:17,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548058656] [2024-09-15 18:42:17,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548058656] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:17,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923734470] [2024-09-15 18:42:17,538 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-15 18:42:17,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:17,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:17,542 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) [2024-09-15 18:42:17,543 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-15 18:42:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:17,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-15 18:42:17,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 18:42:17,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 18:42:17,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923734470] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:17,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:17,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 14 [2024-09-15 18:42:17,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303789696] [2024-09-15 18:42:17,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:17,697 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-15 18:42:17,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:17,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-15 18:42:17,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-09-15 18:42:17,699 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-15 18:42:17,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:17,751 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-09-15 18:42:17,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-15 18:42:17,752 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 44 [2024-09-15 18:42:17,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:17,752 INFO L225 Difference]: With dead ends: 71 [2024-09-15 18:42:17,752 INFO L226 Difference]: Without dead ends: 48 [2024-09-15 18:42:17,753 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 88 SyntacticMatches, 10 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-09-15 18:42:17,753 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:17,753 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 18:42:17,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-15 18:42:17,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-15 18:42:17,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 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) [2024-09-15 18:42:17,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-09-15 18:42:17,761 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 44 [2024-09-15 18:42:17,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:17,761 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-09-15 18:42:17,761 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-15 18:42:17,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:17,761 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-09-15 18:42:17,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-15 18:42:17,762 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:17,762 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:17,775 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-15 18:42:17,966 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:17,967 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:17,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:17,968 INFO L85 PathProgramCache]: Analyzing trace with hash -603130473, now seen corresponding path program 8 times [2024-09-15 18:42:17,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:17,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032958474] [2024-09-15 18:42:17,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:17,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:18,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:18,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-15 18:42:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:18,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-15 18:42:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:18,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-15 18:42:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:18,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-15 18:42:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:18,136 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 18:42:18,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:18,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032958474] [2024-09-15 18:42:18,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032958474] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:18,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724631090] [2024-09-15 18:42:18,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:42:18,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:18,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:18,141 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) [2024-09-15 18:42:18,143 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-15 18:42:18,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:42:18,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:18,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-15 18:42:18,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:18,236 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 18:42:18,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:18,331 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 18:42:18,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724631090] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:18,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:18,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-09-15 18:42:18,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285803188] [2024-09-15 18:42:18,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:18,333 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-15 18:42:18,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:18,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-15 18:42:18,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-09-15 18:42:18,334 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-15 18:42:18,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:18,385 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2024-09-15 18:42:18,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-15 18:42:18,385 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 45 [2024-09-15 18:42:18,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:18,386 INFO L225 Difference]: With dead ends: 61 [2024-09-15 18:42:18,386 INFO L226 Difference]: Without dead ends: 59 [2024-09-15 18:42:18,386 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 90 SyntacticMatches, 12 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-09-15 18:42:18,387 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:18,387 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 87 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 18:42:18,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-15 18:42:18,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-09-15 18:42:18,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 40 states have internal predecessors, (41), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-15 18:42:18,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2024-09-15 18:42:18,392 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 45 [2024-09-15 18:42:18,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:18,392 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2024-09-15 18:42:18,392 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-15 18:42:18,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:18,393 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2024-09-15 18:42:18,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-15 18:42:18,393 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:18,394 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:18,408 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-15 18:42:18,597 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-15 18:42:18,598 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:18,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:18,598 INFO L85 PathProgramCache]: Analyzing trace with hash 769721133, now seen corresponding path program 9 times [2024-09-15 18:42:18,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:18,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055880675] [2024-09-15 18:42:18,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:18,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:18,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:18,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-15 18:42:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:18,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-15 18:42:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:18,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-15 18:42:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:18,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-15 18:42:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:18,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 18:42:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:18,907 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-15 18:42:18,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:18,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055880675] [2024-09-15 18:42:18,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055880675] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:18,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558244306] [2024-09-15 18:42:18,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 18:42:18,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:18,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:18,909 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) [2024-09-15 18:42:18,916 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-15 18:42:18,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-15 18:42:18,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:18,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-15 18:42:18,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:18,991 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-15 18:42:18,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-15 18:42:19,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558244306] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:19,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:19,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16 [2024-09-15 18:42:19,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511186232] [2024-09-15 18:42:19,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:19,208 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-15 18:42:19,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:19,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-15 18:42:19,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-09-15 18:42:19,209 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-15 18:42:19,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:19,286 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2024-09-15 18:42:19,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-15 18:42:19,286 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 52 [2024-09-15 18:42:19,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:19,287 INFO L225 Difference]: With dead ends: 82 [2024-09-15 18:42:19,287 INFO L226 Difference]: Without dead ends: 56 [2024-09-15 18:42:19,287 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 104 SyntacticMatches, 12 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-09-15 18:42:19,288 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:19,288 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:19,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-15 18:42:19,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-15 18:42:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-15 18:42:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2024-09-15 18:42:19,297 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 52 [2024-09-15 18:42:19,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:19,297 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2024-09-15 18:42:19,297 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-15 18:42:19,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2024-09-15 18:42:19,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-15 18:42:19,299 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:19,299 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:19,312 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-15 18:42:19,503 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-15 18:42:19,504 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:19,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:19,504 INFO L85 PathProgramCache]: Analyzing trace with hash -363448391, now seen corresponding path program 10 times [2024-09-15 18:42:19,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:19,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135635850] [2024-09-15 18:42:19,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:19,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:19,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:19,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-15 18:42:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:19,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-15 18:42:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:19,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 18:42:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:19,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-15 18:42:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:19,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-15 18:42:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-15 18:42:19,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:19,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135635850] [2024-09-15 18:42:19,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135635850] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:19,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402311125] [2024-09-15 18:42:19,698 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 18:42:19,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:19,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:19,700 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) [2024-09-15 18:42:19,708 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-15 18:42:19,750 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 18:42:19,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:19,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-15 18:42:19,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:19,843 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-15 18:42:19,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-15 18:42:19,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402311125] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:19,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:19,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2024-09-15 18:42:19,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394045054] [2024-09-15 18:42:19,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:19,935 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-15 18:42:19,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:19,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-15 18:42:19,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-15 18:42:19,936 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-15 18:42:19,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:19,989 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2024-09-15 18:42:19,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-15 18:42:19,990 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 53 [2024-09-15 18:42:19,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:19,991 INFO L225 Difference]: With dead ends: 69 [2024-09-15 18:42:19,991 INFO L226 Difference]: Without dead ends: 67 [2024-09-15 18:42:19,991 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 109 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-09-15 18:42:19,992 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:19,992 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 71 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 18:42:19,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-15 18:42:19,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2024-09-15 18:42:19,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-15 18:42:19,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2024-09-15 18:42:19,997 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 53 [2024-09-15 18:42:19,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:19,997 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-09-15 18:42:19,997 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-15 18:42:19,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:19,998 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2024-09-15 18:42:19,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-15 18:42:19,998 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:19,998 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:20,018 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-15 18:42:20,204 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:20,204 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:20,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:20,205 INFO L85 PathProgramCache]: Analyzing trace with hash 82933451, now seen corresponding path program 11 times [2024-09-15 18:42:20,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:20,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169353222] [2024-09-15 18:42:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:20,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:20,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:20,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-15 18:42:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:20,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-15 18:42:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:20,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 18:42:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:20,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-15 18:42:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:20,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-15 18:42:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:20,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-15 18:42:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:20,418 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-15 18:42:20,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:20,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169353222] [2024-09-15 18:42:20,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169353222] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:20,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171314049] [2024-09-15 18:42:20,419 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 18:42:20,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:20,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:20,427 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) [2024-09-15 18:42:20,431 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-15 18:42:20,489 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-15 18:42:20,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:20,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-15 18:42:20,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-15 18:42:20,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-15 18:42:20,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171314049] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:20,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:20,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 18 [2024-09-15 18:42:20,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57570497] [2024-09-15 18:42:20,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:20,685 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-15 18:42:20,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:20,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-15 18:42:20,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-09-15 18:42:20,686 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-15 18:42:20,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:20,737 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2024-09-15 18:42:20,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-15 18:42:20,738 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 60 [2024-09-15 18:42:20,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:20,738 INFO L225 Difference]: With dead ends: 93 [2024-09-15 18:42:20,738 INFO L226 Difference]: Without dead ends: 64 [2024-09-15 18:42:20,739 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 120 SyntacticMatches, 14 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-09-15 18:42:20,739 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:20,739 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 18:42:20,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-15 18:42:20,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-09-15 18:42:20,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-15 18:42:20,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2024-09-15 18:42:20,744 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 60 [2024-09-15 18:42:20,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:20,745 INFO L474 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2024-09-15 18:42:20,745 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-15 18:42:20,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:20,745 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2024-09-15 18:42:20,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-15 18:42:20,746 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:20,746 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:20,763 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-15 18:42:20,946 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-15 18:42:20,947 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:20,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:20,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2019516247, now seen corresponding path program 12 times [2024-09-15 18:42:20,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:20,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743760638] [2024-09-15 18:42:20,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:20,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:21,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:21,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 18:42:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:21,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-15 18:42:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:21,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-15 18:42:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:21,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-15 18:42:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:21,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-15 18:42:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:21,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-15 18:42:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:21,093 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-15 18:42:21,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:21,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743760638] [2024-09-15 18:42:21,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743760638] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:21,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527253020] [2024-09-15 18:42:21,093 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 18:42:21,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:21,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:21,096 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) [2024-09-15 18:42:21,098 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-15 18:42:21,152 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-15 18:42:21,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:21,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-15 18:42:21,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:21,210 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-15 18:42:21,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:21,314 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-15 18:42:21,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527253020] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:21,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:21,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 15 [2024-09-15 18:42:21,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130636327] [2024-09-15 18:42:21,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:21,315 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-15 18:42:21,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:21,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-15 18:42:21,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-09-15 18:42:21,317 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-15 18:42:21,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:21,380 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2024-09-15 18:42:21,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-15 18:42:21,380 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 61 [2024-09-15 18:42:21,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:21,381 INFO L225 Difference]: With dead ends: 77 [2024-09-15 18:42:21,381 INFO L226 Difference]: Without dead ends: 75 [2024-09-15 18:42:21,381 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 126 SyntacticMatches, 14 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-09-15 18:42:21,382 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:21,383 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:21,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-15 18:42:21,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2024-09-15 18:42:21,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 52 states have internal predecessors, (53), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-15 18:42:21,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2024-09-15 18:42:21,390 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 61 [2024-09-15 18:42:21,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:21,390 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2024-09-15 18:42:21,390 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-15 18:42:21,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:21,391 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2024-09-15 18:42:21,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-15 18:42:21,392 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:21,392 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:21,406 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:21,593 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-15 18:42:21,594 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:21,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:21,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1248321171, now seen corresponding path program 13 times [2024-09-15 18:42:21,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:21,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370027474] [2024-09-15 18:42:21,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:21,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:21,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:21,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 18:42:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:21,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-15 18:42:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:21,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-15 18:42:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:21,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-15 18:42:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:21,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-15 18:42:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:21,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-15 18:42:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:21,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-15 18:42:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:21,803 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-15 18:42:21,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:21,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370027474] [2024-09-15 18:42:21,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370027474] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:21,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836545511] [2024-09-15 18:42:21,804 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-15 18:42:21,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:21,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:21,806 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) [2024-09-15 18:42:21,808 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-15 18:42:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:21,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-15 18:42:21,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:21,913 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-15 18:42:21,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-15 18:42:22,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836545511] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:22,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:22,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 20 [2024-09-15 18:42:22,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788677505] [2024-09-15 18:42:22,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:22,061 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-15 18:42:22,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:22,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-15 18:42:22,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-09-15 18:42:22,062 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-15 18:42:22,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:22,139 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2024-09-15 18:42:22,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-15 18:42:22,139 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 68 [2024-09-15 18:42:22,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:22,140 INFO L225 Difference]: With dead ends: 104 [2024-09-15 18:42:22,140 INFO L226 Difference]: Without dead ends: 72 [2024-09-15 18:42:22,140 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 136 SyntacticMatches, 16 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-09-15 18:42:22,141 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:22,141 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:22,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-09-15 18:42:22,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-09-15 18:42:22,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-15 18:42:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-09-15 18:42:22,146 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 68 [2024-09-15 18:42:22,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:22,146 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-09-15 18:42:22,147 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-15 18:42:22,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:22,149 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-09-15 18:42:22,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-15 18:42:22,150 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:22,150 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:22,164 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-15 18:42:22,350 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-15 18:42:22,351 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:22,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:22,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2046116359, now seen corresponding path program 14 times [2024-09-15 18:42:22,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:22,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819106581] [2024-09-15 18:42:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:22,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:22,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:22,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-15 18:42:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:22,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 18:42:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:22,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-15 18:42:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:22,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 18:42:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:22,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-15 18:42:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:22,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 18:42:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:22,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-15 18:42:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 42 proven. 85 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-15 18:42:22,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:22,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819106581] [2024-09-15 18:42:22,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819106581] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:22,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582523760] [2024-09-15 18:42:22,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:42:22,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:22,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:22,538 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) [2024-09-15 18:42:22,539 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-15 18:42:22,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:42:22,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:22,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-15 18:42:22,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-15 18:42:22,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:22,883 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-15 18:42:22,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582523760] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:22,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:22,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16 [2024-09-15 18:42:22,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043277925] [2024-09-15 18:42:22,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:22,884 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-15 18:42:22,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:22,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-15 18:42:22,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-15 18:42:22,885 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-15 18:42:22,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:22,954 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2024-09-15 18:42:22,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-15 18:42:22,954 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 69 [2024-09-15 18:42:22,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:22,955 INFO L225 Difference]: With dead ends: 85 [2024-09-15 18:42:22,955 INFO L226 Difference]: Without dead ends: 83 [2024-09-15 18:42:22,956 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 141 SyntacticMatches, 18 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-09-15 18:42:22,956 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:22,957 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 83 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:22,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-09-15 18:42:22,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2024-09-15 18:42:22,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-15 18:42:22,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2024-09-15 18:42:22,962 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 69 [2024-09-15 18:42:22,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:22,962 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2024-09-15 18:42:22,962 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-15 18:42:22,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:22,963 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2024-09-15 18:42:22,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-15 18:42:22,963 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:22,963 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:22,976 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-15 18:42:23,164 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-15 18:42:23,164 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:23,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:23,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1820682379, now seen corresponding path program 15 times [2024-09-15 18:42:23,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:23,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557031237] [2024-09-15 18:42:23,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:23,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:23,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:23,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-15 18:42:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:23,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 18:42:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:23,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-15 18:42:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:23,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 18:42:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:23,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-15 18:42:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:23,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 18:42:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:23,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-15 18:42:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:23,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-15 18:42:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-15 18:42:23,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:23,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557031237] [2024-09-15 18:42:23,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557031237] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:23,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961705226] [2024-09-15 18:42:23,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 18:42:23,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:23,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:23,360 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) [2024-09-15 18:42:23,361 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-15 18:42:23,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-15 18:42:23,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:23,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-15 18:42:23,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-15 18:42:23,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-15 18:42:23,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961705226] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:23,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:23,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 22 [2024-09-15 18:42:23,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209983444] [2024-09-15 18:42:23,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:23,722 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-15 18:42:23,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:23,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-15 18:42:23,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-09-15 18:42:23,723 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-15 18:42:23,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:23,832 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2024-09-15 18:42:23,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-15 18:42:23,833 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 76 [2024-09-15 18:42:23,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:23,833 INFO L225 Difference]: With dead ends: 115 [2024-09-15 18:42:23,833 INFO L226 Difference]: Without dead ends: 80 [2024-09-15 18:42:23,834 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 152 SyntacticMatches, 18 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-09-15 18:42:23,834 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:23,834 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 255 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:23,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-15 18:42:23,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-09-15 18:42:23,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-15 18:42:23,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2024-09-15 18:42:23,839 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 76 [2024-09-15 18:42:23,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:23,840 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2024-09-15 18:42:23,840 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-15 18:42:23,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:23,840 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2024-09-15 18:42:23,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-15 18:42:23,840 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:23,841 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:23,853 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:24,044 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:24,045 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:24,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:24,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1946728727, now seen corresponding path program 16 times [2024-09-15 18:42:24,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:24,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124589481] [2024-09-15 18:42:24,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:24,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:24,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:24,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-15 18:42:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:24,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-15 18:42:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:24,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-15 18:42:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:24,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 18:42:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:24,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-15 18:42:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:24,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-15 18:42:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:24,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 18:42:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:24,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-15 18:42:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:24,187 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 52 proven. 109 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-15 18:42:24,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:24,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124589481] [2024-09-15 18:42:24,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124589481] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:24,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626341030] [2024-09-15 18:42:24,188 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 18:42:24,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:24,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:24,192 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) [2024-09-15 18:42:24,197 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-15 18:42:24,237 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 18:42:24,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:24,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-15 18:42:24,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-15 18:42:24,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-15 18:42:24,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626341030] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:24,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:24,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 17 [2024-09-15 18:42:24,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458981441] [2024-09-15 18:42:24,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:24,509 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-15 18:42:24,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:24,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-15 18:42:24,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-09-15 18:42:24,510 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-15 18:42:24,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:24,586 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2024-09-15 18:42:24,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-15 18:42:24,588 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 77 [2024-09-15 18:42:24,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:24,589 INFO L225 Difference]: With dead ends: 93 [2024-09-15 18:42:24,589 INFO L226 Difference]: Without dead ends: 91 [2024-09-15 18:42:24,589 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 160 SyntacticMatches, 18 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-09-15 18:42:24,590 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:24,590 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 95 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:24,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-15 18:42:24,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2024-09-15 18:42:24,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 64 states have internal predecessors, (65), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-15 18:42:24,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2024-09-15 18:42:24,594 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 77 [2024-09-15 18:42:24,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:24,594 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2024-09-15 18:42:24,595 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-15 18:42:24,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:24,595 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2024-09-15 18:42:24,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-15 18:42:24,595 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:24,596 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:24,608 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-15 18:42:24,799 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:24,800 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:24,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:24,800 INFO L85 PathProgramCache]: Analyzing trace with hash 726290349, now seen corresponding path program 17 times [2024-09-15 18:42:24,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:24,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975747585] [2024-09-15 18:42:24,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:24,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-15 18:42:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-15 18:42:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-15 18:42:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 18:42:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-15 18:42:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-15 18:42:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 18:42:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-15 18:42:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-15 18:42:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-15 18:42:25,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:25,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975747585] [2024-09-15 18:42:25,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975747585] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:25,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813931217] [2024-09-15 18:42:25,042 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 18:42:25,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:25,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:25,044 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) [2024-09-15 18:42:25,045 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-15 18:42:25,088 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-15 18:42:25,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:25,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-15 18:42:25,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-15 18:42:25,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-15 18:42:25,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813931217] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:25,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:25,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 24 [2024-09-15 18:42:25,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42658122] [2024-09-15 18:42:25,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:25,404 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-15 18:42:25,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:25,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-15 18:42:25,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2024-09-15 18:42:25,405 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 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) [2024-09-15 18:42:25,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:25,481 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2024-09-15 18:42:25,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-15 18:42:25,482 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 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 84 [2024-09-15 18:42:25,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:25,483 INFO L225 Difference]: With dead ends: 126 [2024-09-15 18:42:25,483 INFO L226 Difference]: Without dead ends: 88 [2024-09-15 18:42:25,483 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 168 SyntacticMatches, 20 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2024-09-15 18:42:25,484 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:25,484 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:25,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-15 18:42:25,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-09-15 18:42:25,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-15 18:42:25,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2024-09-15 18:42:25,489 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 84 [2024-09-15 18:42:25,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:25,489 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2024-09-15 18:42:25,489 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 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) [2024-09-15 18:42:25,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:25,489 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2024-09-15 18:42:25,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-15 18:42:25,490 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:25,490 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:25,505 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-15 18:42:25,694 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:25,694 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:25,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:25,695 INFO L85 PathProgramCache]: Analyzing trace with hash 2011845689, now seen corresponding path program 18 times [2024-09-15 18:42:25,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:25,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099742703] [2024-09-15 18:42:25,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:25,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-15 18:42:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-15 18:42:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-15 18:42:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-15 18:42:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 18:42:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-15 18:42:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-15 18:42:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-15 18:42:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-15 18:42:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 63 proven. 136 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-15 18:42:25,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:25,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099742703] [2024-09-15 18:42:25,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099742703] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:25,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140721019] [2024-09-15 18:42:25,868 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 18:42:25,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:25,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:25,870 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) [2024-09-15 18:42:25,872 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-15 18:42:25,919 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-15 18:42:25,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:25,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-15 18:42:25,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-15 18:42:26,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:26,178 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-15 18:42:26,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140721019] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:26,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:26,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 18 [2024-09-15 18:42:26,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906917557] [2024-09-15 18:42:26,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:26,180 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-15 18:42:26,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:26,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-15 18:42:26,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-09-15 18:42:26,182 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-15 18:42:26,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:26,254 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2024-09-15 18:42:26,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-15 18:42:26,254 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 85 [2024-09-15 18:42:26,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:26,255 INFO L225 Difference]: With dead ends: 101 [2024-09-15 18:42:26,255 INFO L226 Difference]: Without dead ends: 99 [2024-09-15 18:42:26,256 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 177 SyntacticMatches, 20 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-09-15 18:42:26,256 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:26,256 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 75 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:26,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-15 18:42:26,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2024-09-15 18:42:26,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-15 18:42:26,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2024-09-15 18:42:26,261 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 85 [2024-09-15 18:42:26,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:26,262 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2024-09-15 18:42:26,262 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-15 18:42:26,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:26,262 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2024-09-15 18:42:26,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-09-15 18:42:26,263 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:26,263 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:26,276 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:26,467 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-15 18:42:26,467 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:26,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:26,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1515997771, now seen corresponding path program 19 times [2024-09-15 18:42:26,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:26,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054898802] [2024-09-15 18:42:26,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:26,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:26,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:26,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-15 18:42:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:26,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-15 18:42:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:26,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-15 18:42:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:26,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-15 18:42:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:26,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 18:42:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:26,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-15 18:42:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:26,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-15 18:42:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:26,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-15 18:42:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:26,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-15 18:42:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:26,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-15 18:42:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:26,759 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-15 18:42:26,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:26,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054898802] [2024-09-15 18:42:26,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054898802] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:26,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590544351] [2024-09-15 18:42:26,763 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-15 18:42:26,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:26,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:26,764 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) [2024-09-15 18:42:26,766 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-15 18:42:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:26,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-15 18:42:26,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:26,899 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-15 18:42:26,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-15 18:42:27,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590544351] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:27,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:27,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 26 [2024-09-15 18:42:27,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718275319] [2024-09-15 18:42:27,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:27,209 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-15 18:42:27,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:27,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-15 18:42:27,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2024-09-15 18:42:27,211 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 12 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-15 18:42:27,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:27,398 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2024-09-15 18:42:27,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-15 18:42:27,399 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 12 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 92 [2024-09-15 18:42:27,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:27,400 INFO L225 Difference]: With dead ends: 137 [2024-09-15 18:42:27,400 INFO L226 Difference]: Without dead ends: 96 [2024-09-15 18:42:27,400 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 184 SyntacticMatches, 22 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2024-09-15 18:42:27,402 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:27,403 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:42:27,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-15 18:42:27,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-09-15 18:42:27,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-15 18:42:27,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2024-09-15 18:42:27,415 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 92 [2024-09-15 18:42:27,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:27,415 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2024-09-15 18:42:27,418 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 12 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-15 18:42:27,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:27,418 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2024-09-15 18:42:27,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-15 18:42:27,419 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:27,419 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:27,434 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:27,620 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-15 18:42:27,620 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:27,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:27,621 INFO L85 PathProgramCache]: Analyzing trace with hash 774177495, now seen corresponding path program 20 times [2024-09-15 18:42:27,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:27,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816897766] [2024-09-15 18:42:27,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:27,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:27,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:27,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-15 18:42:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:27,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-15 18:42:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:27,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 18:42:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:27,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-15 18:42:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:27,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-15 18:42:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:27,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-15 18:42:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:27,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-15 18:42:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:27,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-15 18:42:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:27,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-15 18:42:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:27,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-15 18:42:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:27,927 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 75 proven. 166 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-15 18:42:27,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:27,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816897766] [2024-09-15 18:42:27,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816897766] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:27,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963113949] [2024-09-15 18:42:27,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:42:27,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:27,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:27,929 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) [2024-09-15 18:42:27,930 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-15 18:42:27,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:42:27,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:27,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-15 18:42:27,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-15 18:42:28,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:28,254 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-15 18:42:28,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963113949] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:28,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:28,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 19 [2024-09-15 18:42:28,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20523905] [2024-09-15 18:42:28,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:28,255 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-15 18:42:28,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:28,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-15 18:42:28,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2024-09-15 18:42:28,256 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-15 18:42:28,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:28,329 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2024-09-15 18:42:28,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-15 18:42:28,332 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 93 [2024-09-15 18:42:28,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:28,333 INFO L225 Difference]: With dead ends: 109 [2024-09-15 18:42:28,334 INFO L226 Difference]: Without dead ends: 107 [2024-09-15 18:42:28,334 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 192 SyntacticMatches, 24 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-09-15 18:42:28,334 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:28,334 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 55 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:28,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-09-15 18:42:28,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2024-09-15 18:42:28,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-15 18:42:28,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2024-09-15 18:42:28,340 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 93 [2024-09-15 18:42:28,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:28,340 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2024-09-15 18:42:28,340 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-15 18:42:28,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:28,341 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2024-09-15 18:42:28,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-09-15 18:42:28,341 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:28,342 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:28,353 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-09-15 18:42:28,545 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:28,546 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:28,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:28,546 INFO L85 PathProgramCache]: Analyzing trace with hash 945524205, now seen corresponding path program 21 times [2024-09-15 18:42:28,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:28,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620294916] [2024-09-15 18:42:28,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:28,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:28,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:28,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-15 18:42:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:28,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-15 18:42:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:28,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 18:42:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:28,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-15 18:42:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:28,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-15 18:42:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:28,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-15 18:42:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:28,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-15 18:42:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:28,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-15 18:42:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:28,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-15 18:42:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:28,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-15 18:42:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:28,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-15 18:42:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-15 18:42:28,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:28,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620294916] [2024-09-15 18:42:28,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620294916] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:28,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151229435] [2024-09-15 18:42:28,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 18:42:28,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:28,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:28,844 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) [2024-09-15 18:42:28,845 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-15 18:42:28,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-09-15 18:42:28,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:28,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-15 18:42:28,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-15 18:42:28,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:29,181 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-15 18:42:29,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151229435] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:29,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:29,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 28 [2024-09-15 18:42:29,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147589250] [2024-09-15 18:42:29,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:29,182 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-15 18:42:29,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:29,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-15 18:42:29,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2024-09-15 18:42:29,183 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-15 18:42:29,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:29,287 INFO L93 Difference]: Finished difference Result 148 states and 161 transitions. [2024-09-15 18:42:29,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-15 18:42:29,288 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 100 [2024-09-15 18:42:29,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:29,289 INFO L225 Difference]: With dead ends: 148 [2024-09-15 18:42:29,289 INFO L226 Difference]: Without dead ends: 104 [2024-09-15 18:42:29,289 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 200 SyntacticMatches, 24 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2024-09-15 18:42:29,289 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:29,290 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 232 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:29,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-15 18:42:29,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-09-15 18:42:29,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 77 states have internal predecessors, (78), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-15 18:42:29,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2024-09-15 18:42:29,295 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 100 [2024-09-15 18:42:29,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:29,295 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2024-09-15 18:42:29,296 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-15 18:42:29,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:29,296 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2024-09-15 18:42:29,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-09-15 18:42:29,297 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:29,297 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:29,309 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:29,500 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-15 18:42:29,501 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:29,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:29,501 INFO L85 PathProgramCache]: Analyzing trace with hash 156826233, now seen corresponding path program 22 times [2024-09-15 18:42:29,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:29,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210055982] [2024-09-15 18:42:29,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:29,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:29,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:29,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-15 18:42:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:29,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-15 18:42:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:29,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-15 18:42:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:29,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 18:42:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:29,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-15 18:42:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:29,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 18:42:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:29,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-15 18:42:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:29,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 18:42:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:29,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-15 18:42:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:29,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-15 18:42:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:29,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-15 18:42:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:29,778 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 88 proven. 199 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-15 18:42:29,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:29,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210055982] [2024-09-15 18:42:29,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210055982] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:29,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019629761] [2024-09-15 18:42:29,779 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 18:42:29,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:29,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:29,783 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) [2024-09-15 18:42:29,787 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-15 18:42:29,834 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 18:42:29,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:29,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-15 18:42:29,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:29,913 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-15 18:42:29,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:30,118 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-15 18:42:30,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019629761] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:30,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:30,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 20 [2024-09-15 18:42:30,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261456150] [2024-09-15 18:42:30,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:30,120 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-15 18:42:30,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:30,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-15 18:42:30,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-09-15 18:42:30,121 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-15 18:42:30,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:30,218 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2024-09-15 18:42:30,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-15 18:42:30,219 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 101 [2024-09-15 18:42:30,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:30,220 INFO L225 Difference]: With dead ends: 117 [2024-09-15 18:42:30,220 INFO L226 Difference]: Without dead ends: 115 [2024-09-15 18:42:30,220 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 211 SyntacticMatches, 24 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-09-15 18:42:30,220 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:30,221 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 91 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:30,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-15 18:42:30,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2024-09-15 18:42:30,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 82 states have internal predecessors, (83), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-15 18:42:30,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2024-09-15 18:42:30,227 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 101 [2024-09-15 18:42:30,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:30,227 INFO L474 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2024-09-15 18:42:30,227 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-15 18:42:30,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:30,228 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2024-09-15 18:42:30,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-15 18:42:30,228 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:30,228 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:30,242 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:30,432 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-15 18:42:30,432 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:30,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:30,433 INFO L85 PathProgramCache]: Analyzing trace with hash -325968885, now seen corresponding path program 23 times [2024-09-15 18:42:30,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:30,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265099916] [2024-09-15 18:42:30,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:30,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:30,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:30,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-15 18:42:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:30,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-15 18:42:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:30,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-15 18:42:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:30,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 18:42:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:30,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-15 18:42:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:30,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 18:42:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:30,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-15 18:42:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:30,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 18:42:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:30,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-15 18:42:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:30,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-15 18:42:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:30,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-15 18:42:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:30,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-15 18:42:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:30,767 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-15 18:42:30,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:30,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265099916] [2024-09-15 18:42:30,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265099916] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:30,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754782334] [2024-09-15 18:42:30,767 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 18:42:30,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:30,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:30,769 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) [2024-09-15 18:42:30,771 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-15 18:42:30,823 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-15 18:42:30,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:30,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-15 18:42:30,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:30,903 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-15 18:42:30,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:31,221 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-15 18:42:31,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754782334] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:31,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:31,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 30 [2024-09-15 18:42:31,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875526044] [2024-09-15 18:42:31,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:31,223 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-15 18:42:31,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:31,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-15 18:42:31,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2024-09-15 18:42:31,226 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-15 18:42:31,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:31,390 INFO L93 Difference]: Finished difference Result 159 states and 173 transitions. [2024-09-15 18:42:31,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-15 18:42:31,391 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 108 [2024-09-15 18:42:31,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:31,393 INFO L225 Difference]: With dead ends: 159 [2024-09-15 18:42:31,393 INFO L226 Difference]: Without dead ends: 112 [2024-09-15 18:42:31,393 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 216 SyntacticMatches, 26 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2024-09-15 18:42:31,394 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:31,399 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:31,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-09-15 18:42:31,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-09-15 18:42:31,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 82 states have (on average 1.024390243902439) internal successors, (84), 83 states have internal predecessors, (84), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-15 18:42:31,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2024-09-15 18:42:31,422 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 108 [2024-09-15 18:42:31,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:31,422 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2024-09-15 18:42:31,423 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-15 18:42:31,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:31,424 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2024-09-15 18:42:31,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-15 18:42:31,428 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:31,428 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:31,459 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:31,629 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-15 18:42:31,629 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:31,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:31,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1691368599, now seen corresponding path program 24 times [2024-09-15 18:42:31,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:31,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051314305] [2024-09-15 18:42:31,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:31,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:31,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:31,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-15 18:42:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:31,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 18:42:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:31,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-15 18:42:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:31,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-15 18:42:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:31,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-15 18:42:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:31,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-15 18:42:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:31,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-15 18:42:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:31,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-15 18:42:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:31,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-15 18:42:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:31,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-15 18:42:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:31,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-15 18:42:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:31,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-15 18:42:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:31,988 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 102 proven. 235 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-15 18:42:31,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:31,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051314305] [2024-09-15 18:42:31,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051314305] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:31,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345630814] [2024-09-15 18:42:31,988 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 18:42:31,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:31,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:31,990 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) [2024-09-15 18:42:31,991 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-15 18:42:32,046 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-15 18:42:32,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:32,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-15 18:42:32,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:32,117 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-15 18:42:32,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-15 18:42:32,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345630814] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:32,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:32,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2024-09-15 18:42:32,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930551095] [2024-09-15 18:42:32,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:32,343 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-15 18:42:32,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:32,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-15 18:42:32,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-09-15 18:42:32,343 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-15 18:42:32,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:32,420 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2024-09-15 18:42:32,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-15 18:42:32,420 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 109 [2024-09-15 18:42:32,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:32,421 INFO L225 Difference]: With dead ends: 125 [2024-09-15 18:42:32,421 INFO L226 Difference]: Without dead ends: 123 [2024-09-15 18:42:32,421 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 228 SyntacticMatches, 26 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2024-09-15 18:42:32,422 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:32,422 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 78 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:32,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-09-15 18:42:32,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2024-09-15 18:42:32,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 88 states have internal predecessors, (89), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-15 18:42:32,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2024-09-15 18:42:32,432 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 109 [2024-09-15 18:42:32,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:32,432 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2024-09-15 18:42:32,432 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-15 18:42:32,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:32,432 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2024-09-15 18:42:32,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-09-15 18:42:32,433 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:32,433 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:32,451 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-09-15 18:42:32,633 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-15 18:42:32,634 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:32,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:32,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1194318893, now seen corresponding path program 25 times [2024-09-15 18:42:32,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:32,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533226741] [2024-09-15 18:42:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:32,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:32,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:32,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-15 18:42:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:32,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 18:42:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:32,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-15 18:42:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:32,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-15 18:42:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:32,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-15 18:42:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:32,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-15 18:42:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:32,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-15 18:42:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:32,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-15 18:42:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:32,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-15 18:42:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:32,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-15 18:42:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:32,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-15 18:42:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:32,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-15 18:42:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:32,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-15 18:42:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-15 18:42:32,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:32,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533226741] [2024-09-15 18:42:32,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533226741] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:32,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219158455] [2024-09-15 18:42:32,984 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-15 18:42:32,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:32,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:32,986 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) [2024-09-15 18:42:33,000 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-15 18:42:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:33,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-15 18:42:33,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:33,139 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-15 18:42:33,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:33,449 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-15 18:42:33,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219158455] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:33,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:33,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 32 [2024-09-15 18:42:33,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97923839] [2024-09-15 18:42:33,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:33,450 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-15 18:42:33,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:33,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-15 18:42:33,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2024-09-15 18:42:33,451 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-15 18:42:33,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:33,570 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2024-09-15 18:42:33,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-15 18:42:33,571 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 116 [2024-09-15 18:42:33,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:33,573 INFO L225 Difference]: With dead ends: 170 [2024-09-15 18:42:33,573 INFO L226 Difference]: Without dead ends: 120 [2024-09-15 18:42:33,573 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 232 SyntacticMatches, 28 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2024-09-15 18:42:33,574 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:33,574 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:33,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-15 18:42:33,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-09-15 18:42:33,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 89 states have internal predecessors, (90), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-15 18:42:33,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2024-09-15 18:42:33,584 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 116 [2024-09-15 18:42:33,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:33,584 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2024-09-15 18:42:33,584 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-15 18:42:33,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:33,584 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2024-09-15 18:42:33,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-09-15 18:42:33,585 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:33,585 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:33,601 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:33,785 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:33,786 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:33,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:33,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1153085625, now seen corresponding path program 26 times [2024-09-15 18:42:33,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:33,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280539283] [2024-09-15 18:42:33,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:33,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:34,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:34,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-15 18:42:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:34,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-15 18:42:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:34,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-15 18:42:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:34,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-15 18:42:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:34,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-15 18:42:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:34,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-15 18:42:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:34,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 18:42:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:34,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-15 18:42:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:34,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-15 18:42:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:34,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-15 18:42:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:34,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-15 18:42:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:34,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-15 18:42:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:34,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-15 18:42:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:34,070 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 117 proven. 274 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-15 18:42:34,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:34,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280539283] [2024-09-15 18:42:34,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280539283] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:34,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173269291] [2024-09-15 18:42:34,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:42:34,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:34,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:34,073 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) [2024-09-15 18:42:34,082 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-15 18:42:34,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:42:34,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:34,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-15 18:42:34,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:34,224 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-15 18:42:34,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:34,497 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-15 18:42:34,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173269291] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:34,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:34,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 22 [2024-09-15 18:42:34,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869051035] [2024-09-15 18:42:34,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:34,498 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-15 18:42:34,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:34,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-15 18:42:34,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2024-09-15 18:42:34,499 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-15 18:42:34,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:34,595 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2024-09-15 18:42:34,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-15 18:42:34,595 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 117 [2024-09-15 18:42:34,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:34,596 INFO L225 Difference]: With dead ends: 133 [2024-09-15 18:42:34,597 INFO L226 Difference]: Without dead ends: 131 [2024-09-15 18:42:34,597 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 243 SyntacticMatches, 30 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2024-09-15 18:42:34,597 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:34,598 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 79 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:34,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-15 18:42:34,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2024-09-15 18:42:34,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 93 states have (on average 1.021505376344086) internal successors, (95), 94 states have internal predecessors, (95), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-15 18:42:34,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2024-09-15 18:42:34,604 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 117 [2024-09-15 18:42:34,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:34,605 INFO L474 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2024-09-15 18:42:34,605 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-15 18:42:34,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:34,605 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2024-09-15 18:42:34,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-09-15 18:42:34,606 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:34,606 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:34,618 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:34,806 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-15 18:42:34,807 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:34,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:34,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1614994891, now seen corresponding path program 27 times [2024-09-15 18:42:34,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:34,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019103901] [2024-09-15 18:42:34,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:34,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:35,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:35,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-15 18:42:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:35,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-15 18:42:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:35,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-15 18:42:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:35,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-15 18:42:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:35,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-15 18:42:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:35,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-15 18:42:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:35,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 18:42:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:35,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-15 18:42:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:35,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-15 18:42:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:35,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-15 18:42:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:35,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-15 18:42:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:35,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-15 18:42:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:35,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-15 18:42:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:35,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-15 18:42:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-15 18:42:35,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:35,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019103901] [2024-09-15 18:42:35,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019103901] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:35,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688576899] [2024-09-15 18:42:35,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 18:42:35,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:35,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:35,209 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) [2024-09-15 18:42:35,218 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-15 18:42:35,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-09-15 18:42:35,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:35,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-15 18:42:35,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:35,342 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-15 18:42:35,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-15 18:42:35,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688576899] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:35,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:35,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 34 [2024-09-15 18:42:35,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127078442] [2024-09-15 18:42:35,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:35,676 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-15 18:42:35,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:35,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-15 18:42:35,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2024-09-15 18:42:35,677 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 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) [2024-09-15 18:42:35,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:35,799 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2024-09-15 18:42:35,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-15 18:42:35,800 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 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 124 [2024-09-15 18:42:35,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:35,810 INFO L225 Difference]: With dead ends: 181 [2024-09-15 18:42:35,810 INFO L226 Difference]: Without dead ends: 128 [2024-09-15 18:42:35,810 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 248 SyntacticMatches, 30 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2024-09-15 18:42:35,811 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:35,811 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:35,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-09-15 18:42:35,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-09-15 18:42:35,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 95 states have internal predecessors, (96), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-15 18:42:35,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2024-09-15 18:42:35,818 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 124 [2024-09-15 18:42:35,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:35,818 INFO L474 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2024-09-15 18:42:35,819 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 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) [2024-09-15 18:42:35,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:35,819 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2024-09-15 18:42:35,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-09-15 18:42:35,820 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:35,820 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:35,835 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-09-15 18:42:36,023 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:36,024 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:36,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:36,024 INFO L85 PathProgramCache]: Analyzing trace with hash -182032809, now seen corresponding path program 28 times [2024-09-15 18:42:36,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:36,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602841890] [2024-09-15 18:42:36,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:36,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:36,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:36,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 18:42:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:36,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-15 18:42:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:36,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 18:42:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:36,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-15 18:42:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:36,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 18:42:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:36,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-15 18:42:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:36,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-15 18:42:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:36,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-15 18:42:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:36,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-15 18:42:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:36,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-15 18:42:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:36,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-15 18:42:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:36,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-15 18:42:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:36,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-15 18:42:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:36,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-15 18:42:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 133 proven. 316 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-15 18:42:36,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:36,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602841890] [2024-09-15 18:42:36,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602841890] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:36,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98040138] [2024-09-15 18:42:36,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 18:42:36,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:36,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:36,282 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) [2024-09-15 18:42:36,287 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-15 18:42:36,339 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 18:42:36,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:36,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-15 18:42:36,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:36,431 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-15 18:42:36,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-15 18:42:36,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98040138] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:36,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:36,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 23 [2024-09-15 18:42:36,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175518939] [2024-09-15 18:42:36,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:36,724 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-15 18:42:36,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:36,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-15 18:42:36,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2024-09-15 18:42:36,725 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-15 18:42:36,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:36,819 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2024-09-15 18:42:36,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-15 18:42:36,819 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 125 [2024-09-15 18:42:36,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:36,820 INFO L225 Difference]: With dead ends: 141 [2024-09-15 18:42:36,820 INFO L226 Difference]: Without dead ends: 139 [2024-09-15 18:42:36,821 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 260 SyntacticMatches, 32 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2024-09-15 18:42:36,821 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:36,821 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 87 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:36,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-09-15 18:42:36,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2024-09-15 18:42:36,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 99 states have (on average 1.02020202020202) internal successors, (101), 100 states have internal predecessors, (101), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-15 18:42:36,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2024-09-15 18:42:36,828 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 125 [2024-09-15 18:42:36,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:36,828 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2024-09-15 18:42:36,829 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-15 18:42:36,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:36,829 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2024-09-15 18:42:36,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-09-15 18:42:36,830 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:36,830 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:36,842 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-09-15 18:42:37,030 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:37,031 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:37,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:37,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1020577171, now seen corresponding path program 29 times [2024-09-15 18:42:37,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:37,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573861428] [2024-09-15 18:42:37,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:37,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:37,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:37,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 18:42:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:37,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-15 18:42:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:37,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 18:42:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:37,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-15 18:42:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:37,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 18:42:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:37,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-15 18:42:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:37,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-15 18:42:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:37,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-15 18:42:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:37,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-15 18:42:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:37,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-15 18:42:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:37,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-15 18:42:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:37,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-15 18:42:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:37,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-15 18:42:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:37,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-15 18:42:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:37,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-15 18:42:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:37,520 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-15 18:42:37,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:37,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573861428] [2024-09-15 18:42:37,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573861428] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:37,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181094886] [2024-09-15 18:42:37,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 18:42:37,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:37,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:37,523 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) [2024-09-15 18:42:37,524 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-15 18:42:37,587 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-15 18:42:37,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:37,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-15 18:42:37,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-15 18:42:37,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-15 18:42:38,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181094886] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:38,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:38,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 36 [2024-09-15 18:42:38,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212649215] [2024-09-15 18:42:38,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:38,044 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-15 18:42:38,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:38,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-15 18:42:38,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2024-09-15 18:42:38,046 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-15 18:42:38,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:38,181 INFO L93 Difference]: Finished difference Result 192 states and 209 transitions. [2024-09-15 18:42:38,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-15 18:42:38,182 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 132 [2024-09-15 18:42:38,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:38,183 INFO L225 Difference]: With dead ends: 192 [2024-09-15 18:42:38,183 INFO L226 Difference]: Without dead ends: 136 [2024-09-15 18:42:38,184 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 264 SyntacticMatches, 32 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2024-09-15 18:42:38,184 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:38,184 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 240 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:38,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-15 18:42:38,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-09-15 18:42:38,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 100 states have (on average 1.02) internal successors, (102), 101 states have internal predecessors, (102), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-15 18:42:38,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2024-09-15 18:42:38,192 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 132 [2024-09-15 18:42:38,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:38,192 INFO L474 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2024-09-15 18:42:38,192 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-15 18:42:38,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:38,193 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2024-09-15 18:42:38,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-09-15 18:42:38,193 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:38,193 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:38,206 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-09-15 18:42:38,397 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-15 18:42:38,398 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:38,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:38,398 INFO L85 PathProgramCache]: Analyzing trace with hash 896759545, now seen corresponding path program 30 times [2024-09-15 18:42:38,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:38,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809575281] [2024-09-15 18:42:38,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:38,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:38,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:38,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-15 18:42:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:38,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-15 18:42:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:38,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 18:42:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:38,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-15 18:42:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:38,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-15 18:42:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:38,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 18:42:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:38,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-15 18:42:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:38,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-15 18:42:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:38,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-15 18:42:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:38,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-15 18:42:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:38,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-15 18:42:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:38,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-15 18:42:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:38,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-15 18:42:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:38,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-15 18:42:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:38,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-15 18:42:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:38,695 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 150 proven. 361 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-15 18:42:38,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:38,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809575281] [2024-09-15 18:42:38,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809575281] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:38,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203955026] [2024-09-15 18:42:38,698 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 18:42:38,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:38,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:38,700 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) [2024-09-15 18:42:38,701 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-15 18:42:38,760 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-09-15 18:42:38,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:38,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-15 18:42:38,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:38,876 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-15 18:42:38,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-15 18:42:39,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203955026] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:39,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:39,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 24 [2024-09-15 18:42:39,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950352238] [2024-09-15 18:42:39,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:39,186 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-15 18:42:39,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:39,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-15 18:42:39,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2024-09-15 18:42:39,187 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-15 18:42:39,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:39,305 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2024-09-15 18:42:39,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-15 18:42:39,306 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 133 [2024-09-15 18:42:39,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:39,307 INFO L225 Difference]: With dead ends: 149 [2024-09-15 18:42:39,307 INFO L226 Difference]: Without dead ends: 147 [2024-09-15 18:42:39,307 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 279 SyntacticMatches, 32 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2024-09-15 18:42:39,308 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:39,308 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 92 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:39,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-15 18:42:39,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2024-09-15 18:42:39,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 105 states have (on average 1.019047619047619) internal successors, (107), 106 states have internal predecessors, (107), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-15 18:42:39,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2024-09-15 18:42:39,319 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 133 [2024-09-15 18:42:39,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:39,319 INFO L474 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2024-09-15 18:42:39,319 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-15 18:42:39,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:39,319 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2024-09-15 18:42:39,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-09-15 18:42:39,320 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:39,320 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:39,340 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-09-15 18:42:39,524 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:39,525 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:39,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:39,525 INFO L85 PathProgramCache]: Analyzing trace with hash -779448437, now seen corresponding path program 31 times [2024-09-15 18:42:39,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:39,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202822682] [2024-09-15 18:42:39,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:39,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:40,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:40,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-15 18:42:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:40,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-15 18:42:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:40,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 18:42:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:40,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-15 18:42:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:40,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-15 18:42:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:40,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 18:42:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:40,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-15 18:42:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:40,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-15 18:42:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:40,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-15 18:42:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:40,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-15 18:42:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:40,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-15 18:42:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:40,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-15 18:42:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:40,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-15 18:42:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:40,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-15 18:42:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:40,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-15 18:42:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:40,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-15 18:42:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:40,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-15 18:42:40,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:40,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202822682] [2024-09-15 18:42:40,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202822682] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:40,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806963148] [2024-09-15 18:42:40,043 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-15 18:42:40,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:40,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:40,045 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) [2024-09-15 18:42:40,052 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-15 18:42:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:40,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-15 18:42:40,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:40,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-15 18:42:40,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:40,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-15 18:42:40,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806963148] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:40,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:40,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 38 [2024-09-15 18:42:40,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843027495] [2024-09-15 18:42:40,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:40,522 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-15 18:42:40,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:40,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-15 18:42:40,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2024-09-15 18:42:40,526 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 18 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-15 18:42:40,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:40,770 INFO L93 Difference]: Finished difference Result 203 states and 221 transitions. [2024-09-15 18:42:40,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-15 18:42:40,772 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 18 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 140 [2024-09-15 18:42:40,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:40,774 INFO L225 Difference]: With dead ends: 203 [2024-09-15 18:42:40,774 INFO L226 Difference]: Without dead ends: 144 [2024-09-15 18:42:40,774 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 280 SyntacticMatches, 34 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2024-09-15 18:42:40,775 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:40,775 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 552 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:42:40,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-15 18:42:40,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-09-15 18:42:40,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 107 states have internal predecessors, (108), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-15 18:42:40,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2024-09-15 18:42:40,785 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 140 [2024-09-15 18:42:40,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:40,785 INFO L474 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2024-09-15 18:42:40,786 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 18 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-15 18:42:40,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:40,786 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2024-09-15 18:42:40,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-09-15 18:42:40,786 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:40,787 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:40,799 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:40,990 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-15 18:42:40,990 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:40,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:40,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1690075113, now seen corresponding path program 32 times [2024-09-15 18:42:40,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:40,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795643016] [2024-09-15 18:42:40,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:40,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:41,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:41,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-15 18:42:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:41,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-15 18:42:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:41,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-15 18:42:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:41,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 18:42:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:41,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-15 18:42:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:41,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-15 18:42:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:41,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-15 18:42:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:41,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-15 18:42:41,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:41,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-15 18:42:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:41,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-15 18:42:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:41,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-15 18:42:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:41,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-15 18:42:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:41,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-15 18:42:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:41,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-15 18:42:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:41,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-15 18:42:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:41,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-15 18:42:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:41,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 168 proven. 409 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-15 18:42:41,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:41,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795643016] [2024-09-15 18:42:41,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795643016] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:41,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042831707] [2024-09-15 18:42:41,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:42:41,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:41,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:41,321 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) [2024-09-15 18:42:41,322 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-15 18:42:41,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:42:41,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:41,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-15 18:42:41,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-15 18:42:41,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:41,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-15 18:42:41,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042831707] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:41,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:41,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 25 [2024-09-15 18:42:41,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602107922] [2024-09-15 18:42:41,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:41,820 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-15 18:42:41,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:41,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-15 18:42:41,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=397, Unknown=0, NotChecked=0, Total=600 [2024-09-15 18:42:41,820 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-15 18:42:41,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:41,932 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2024-09-15 18:42:41,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-15 18:42:41,932 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 141 [2024-09-15 18:42:41,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:41,933 INFO L225 Difference]: With dead ends: 157 [2024-09-15 18:42:41,934 INFO L226 Difference]: Without dead ends: 155 [2024-09-15 18:42:41,934 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 294 SyntacticMatches, 36 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=441, Unknown=0, NotChecked=0, Total=650 [2024-09-15 18:42:41,934 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:41,934 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:41,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-15 18:42:41,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2024-09-15 18:42:41,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 111 states have (on average 1.018018018018018) internal successors, (113), 112 states have internal predecessors, (113), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-15 18:42:41,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2024-09-15 18:42:41,953 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 141 [2024-09-15 18:42:41,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:41,953 INFO L474 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2024-09-15 18:42:41,954 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-15 18:42:41,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:41,954 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2024-09-15 18:42:41,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-09-15 18:42:41,955 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:41,955 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:41,970 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-09-15 18:42:42,158 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-15 18:42:42,159 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:42,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:42,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1488038061, now seen corresponding path program 33 times [2024-09-15 18:42:42,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:42,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744907713] [2024-09-15 18:42:42,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:42,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:42,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:42,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-15 18:42:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:42,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-15 18:42:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:42,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-15 18:42:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:42,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 18:42:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:42,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-15 18:42:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:42,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-15 18:42:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:42,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-15 18:42:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:42,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-15 18:42:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:42,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-15 18:42:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:42,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-15 18:42:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:42,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-15 18:42:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:42,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-15 18:42:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:42,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-15 18:42:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:42,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-15 18:42:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:42,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-15 18:42:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:42,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-15 18:42:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:42,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-15 18:42:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:42,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-15 18:42:42,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:42,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744907713] [2024-09-15 18:42:42,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744907713] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:42,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381971263] [2024-09-15 18:42:42,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 18:42:42,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:42,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:42,773 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) [2024-09-15 18:42:42,774 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-15 18:42:42,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-09-15 18:42:42,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:42,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-15 18:42:42,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:42,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-15 18:42:42,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-15 18:42:43,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381971263] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:43,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:43,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 40 [2024-09-15 18:42:43,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949764146] [2024-09-15 18:42:43,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:43,353 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-15 18:42:43,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:43,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-15 18:42:43,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2024-09-15 18:42:43,355 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-15 18:42:43,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:43,552 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2024-09-15 18:42:43,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-15 18:42:43,552 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 148 [2024-09-15 18:42:43,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:43,554 INFO L225 Difference]: With dead ends: 214 [2024-09-15 18:42:43,554 INFO L226 Difference]: Without dead ends: 152 [2024-09-15 18:42:43,555 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 296 SyntacticMatches, 36 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2024-09-15 18:42:43,555 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:43,556 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 306 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:42:43,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-09-15 18:42:43,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2024-09-15 18:42:43,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 113 states have internal predecessors, (114), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-15 18:42:43,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2024-09-15 18:42:43,570 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 148 [2024-09-15 18:42:43,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:43,570 INFO L474 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2024-09-15 18:42:43,570 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-15 18:42:43,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:43,570 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2024-09-15 18:42:43,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-09-15 18:42:43,571 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:43,571 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:43,583 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:43,775 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-15 18:42:43,776 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:43,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:43,776 INFO L85 PathProgramCache]: Analyzing trace with hash 669470009, now seen corresponding path program 34 times [2024-09-15 18:42:43,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:43,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315545646] [2024-09-15 18:42:43,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:43,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-15 18:42:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 18:42:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-15 18:42:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-15 18:42:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-15 18:42:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-15 18:42:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-15 18:42:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-15 18:42:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-15 18:42:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-15 18:42:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-15 18:42:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-15 18:42:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-15 18:42:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-15 18:42:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-15 18:42:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-15 18:42:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-15 18:42:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 187 proven. 460 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-15 18:42:44,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:44,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315545646] [2024-09-15 18:42:44,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315545646] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:44,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905914120] [2024-09-15 18:42:44,154 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 18:42:44,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:44,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:44,155 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) [2024-09-15 18:42:44,160 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-15 18:42:44,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 18:42:44,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:44,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-15 18:42:44,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-15 18:42:44,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:44,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-15 18:42:44,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905914120] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:44,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:44,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 26 [2024-09-15 18:42:44,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072415138] [2024-09-15 18:42:44,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:44,595 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-15 18:42:44,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:44,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-15 18:42:44,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=427, Unknown=0, NotChecked=0, Total=650 [2024-09-15 18:42:44,596 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-15 18:42:44,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:44,688 INFO L93 Difference]: Finished difference Result 165 states and 167 transitions. [2024-09-15 18:42:44,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-15 18:42:44,688 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 149 [2024-09-15 18:42:44,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:44,689 INFO L225 Difference]: With dead ends: 165 [2024-09-15 18:42:44,689 INFO L226 Difference]: Without dead ends: 163 [2024-09-15 18:42:44,690 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 313 SyntacticMatches, 36 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2024-09-15 18:42:44,691 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:44,691 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 100 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:44,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-09-15 18:42:44,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2024-09-15 18:42:44,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 117 states have (on average 1.017094017094017) internal successors, (119), 118 states have internal predecessors, (119), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-15 18:42:44,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2024-09-15 18:42:44,699 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 149 [2024-09-15 18:42:44,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:44,699 INFO L474 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2024-09-15 18:42:44,699 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-15 18:42:44,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:44,700 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2024-09-15 18:42:44,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-09-15 18:42:44,700 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:44,700 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:44,712 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:44,905 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-15 18:42:44,905 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:44,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:44,905 INFO L85 PathProgramCache]: Analyzing trace with hash -75157173, now seen corresponding path program 35 times [2024-09-15 18:42:44,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:44,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474826067] [2024-09-15 18:42:44,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:44,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-15 18:42:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 18:42:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-15 18:42:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-15 18:42:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-15 18:42:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-15 18:42:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-15 18:42:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-15 18:42:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-15 18:42:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-15 18:42:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-15 18:42:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-15 18:42:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-15 18:42:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-15 18:42:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-15 18:42:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-15 18:42:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-15 18:42:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-15 18:42:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-15 18:42:45,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:45,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474826067] [2024-09-15 18:42:45,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474826067] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:45,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076618970] [2024-09-15 18:42:45,579 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 18:42:45,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:45,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:45,581 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) [2024-09-15 18:42:45,582 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-15 18:42:45,657 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-09-15 18:42:45,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:45,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-15 18:42:45,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-15 18:42:45,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-15 18:42:46,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076618970] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:46,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:46,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 42 [2024-09-15 18:42:46,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413733448] [2024-09-15 18:42:46,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:46,249 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-15 18:42:46,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:46,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-15 18:42:46,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=1280, Unknown=0, NotChecked=0, Total=1722 [2024-09-15 18:42:46,250 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 20 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-15 18:42:46,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:46,496 INFO L93 Difference]: Finished difference Result 225 states and 245 transitions. [2024-09-15 18:42:46,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-15 18:42:46,496 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 20 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 156 [2024-09-15 18:42:46,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:46,500 INFO L225 Difference]: With dead ends: 225 [2024-09-15 18:42:46,500 INFO L226 Difference]: Without dead ends: 160 [2024-09-15 18:42:46,501 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 312 SyntacticMatches, 38 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=442, Invalid=1280, Unknown=0, NotChecked=0, Total=1722 [2024-09-15 18:42:46,501 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:46,502 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 418 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:42:46,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-09-15 18:42:46,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-09-15 18:42:46,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 119 states have internal predecessors, (120), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-15 18:42:46,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2024-09-15 18:42:46,522 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 156 [2024-09-15 18:42:46,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:46,522 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2024-09-15 18:42:46,522 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 20 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-15 18:42:46,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:46,522 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2024-09-15 18:42:46,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-09-15 18:42:46,523 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:46,523 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:46,547 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:46,723 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-15 18:42:46,724 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:46,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:46,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1304196649, now seen corresponding path program 36 times [2024-09-15 18:42:46,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:46,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094442053] [2024-09-15 18:42:46,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:46,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-15 18:42:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-15 18:42:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 18:42:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-15 18:42:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 18:42:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-15 18:42:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 18:42:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-15 18:42:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-15 18:42:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-15 18:42:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-15 18:42:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-15 18:42:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-15 18:42:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-15 18:42:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-15 18:42:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-15 18:42:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-15 18:42:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-15 18:42:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 207 proven. 514 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-15 18:42:47,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:47,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094442053] [2024-09-15 18:42:47,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094442053] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:47,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679707328] [2024-09-15 18:42:47,134 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 18:42:47,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:47,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:47,136 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) [2024-09-15 18:42:47,137 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-09-15 18:42:47,205 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-15 18:42:47,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:47,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-15 18:42:47,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:47,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-15 18:42:47,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:47,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-15 18:42:47,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679707328] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:47,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:47,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 27 [2024-09-15 18:42:47,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888579104] [2024-09-15 18:42:47,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:47,728 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-15 18:42:47,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:47,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-15 18:42:47,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=458, Unknown=0, NotChecked=0, Total=702 [2024-09-15 18:42:47,729 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-15 18:42:47,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:47,867 INFO L93 Difference]: Finished difference Result 173 states and 175 transitions. [2024-09-15 18:42:47,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-15 18:42:47,867 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 157 [2024-09-15 18:42:47,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:47,869 INFO L225 Difference]: With dead ends: 173 [2024-09-15 18:42:47,869 INFO L226 Difference]: Without dead ends: 171 [2024-09-15 18:42:47,869 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 330 SyntacticMatches, 38 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2024-09-15 18:42:47,870 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:47,870 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:47,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-09-15 18:42:47,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2024-09-15 18:42:47,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 123 states have (on average 1.016260162601626) internal successors, (125), 124 states have internal predecessors, (125), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-15 18:42:47,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2024-09-15 18:42:47,885 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 157 [2024-09-15 18:42:47,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:47,886 INFO L474 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2024-09-15 18:42:47,886 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-15 18:42:47,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:47,886 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2024-09-15 18:42:47,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-09-15 18:42:47,887 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:47,887 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:47,900 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-09-15 18:42:48,091 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-15 18:42:48,092 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:48,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:48,092 INFO L85 PathProgramCache]: Analyzing trace with hash 891758317, now seen corresponding path program 37 times [2024-09-15 18:42:48,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:48,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122651574] [2024-09-15 18:42:48,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:48,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-15 18:42:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-15 18:42:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 18:42:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-15 18:42:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 18:42:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-15 18:42:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 18:42:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-15 18:42:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-15 18:42:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-15 18:42:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-15 18:42:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-15 18:42:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-15 18:42:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-15 18:42:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-15 18:42:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-15 18:42:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-15 18:42:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-15 18:42:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-15 18:42:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-15 18:42:48,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:48,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122651574] [2024-09-15 18:42:48,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122651574] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:48,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482412551] [2024-09-15 18:42:48,751 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-15 18:42:48,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:48,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:48,752 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) [2024-09-15 18:42:48,753 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-09-15 18:42:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-15 18:42:48,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-15 18:42:48,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-15 18:42:49,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482412551] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:49,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:49,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2024-09-15 18:42:49,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837751893] [2024-09-15 18:42:49,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:49,527 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-15 18:42:49,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:49,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-15 18:42:49,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1407, Unknown=0, NotChecked=0, Total=1892 [2024-09-15 18:42:49,528 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-15 18:42:49,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:49,720 INFO L93 Difference]: Finished difference Result 236 states and 257 transitions. [2024-09-15 18:42:49,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-15 18:42:49,720 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 164 [2024-09-15 18:42:49,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:49,722 INFO L225 Difference]: With dead ends: 236 [2024-09-15 18:42:49,722 INFO L226 Difference]: Without dead ends: 168 [2024-09-15 18:42:49,722 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 328 SyntacticMatches, 40 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=485, Invalid=1407, Unknown=0, NotChecked=0, Total=1892 [2024-09-15 18:42:49,723 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:49,723 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 344 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:42:49,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-09-15 18:42:49,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-09-15 18:42:49,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 125 states have internal predecessors, (126), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-15 18:42:49,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2024-09-15 18:42:49,732 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 164 [2024-09-15 18:42:49,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:49,732 INFO L474 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2024-09-15 18:42:49,732 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-15 18:42:49,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:49,732 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2024-09-15 18:42:49,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-09-15 18:42:49,733 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:49,733 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:49,747 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-09-15 18:42:49,937 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-15 18:42:49,937 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:49,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:49,938 INFO L85 PathProgramCache]: Analyzing trace with hash -377867399, now seen corresponding path program 38 times [2024-09-15 18:42:49,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:49,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011130286] [2024-09-15 18:42:49,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:49,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 18:42:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-15 18:42:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-15 18:42:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-15 18:42:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-15 18:42:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-15 18:42:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-15 18:42:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-15 18:42:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-15 18:42:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-15 18:42:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-15 18:42:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-15 18:42:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-15 18:42:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-15 18:42:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-15 18:42:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-15 18:42:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-15 18:42:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-15 18:42:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-15 18:42:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:50,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 228 proven. 571 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-15 18:42:50,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:50,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011130286] [2024-09-15 18:42:50,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011130286] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:50,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810354463] [2024-09-15 18:42:50,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:42:50,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:50,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:50,366 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) [2024-09-15 18:42:50,370 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-09-15 18:42:50,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:42:50,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:50,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-15 18:42:50,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-15 18:42:50,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:50,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-15 18:42:50,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810354463] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:50,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:50,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 28 [2024-09-15 18:42:50,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861369982] [2024-09-15 18:42:50,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:50,970 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-15 18:42:50,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:50,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-15 18:42:50,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=490, Unknown=0, NotChecked=0, Total=756 [2024-09-15 18:42:50,971 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-15 18:42:51,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:51,098 INFO L93 Difference]: Finished difference Result 181 states and 183 transitions. [2024-09-15 18:42:51,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-15 18:42:51,098 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 165 [2024-09-15 18:42:51,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:51,100 INFO L225 Difference]: With dead ends: 181 [2024-09-15 18:42:51,100 INFO L226 Difference]: Without dead ends: 179 [2024-09-15 18:42:51,100 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 345 SyntacticMatches, 42 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=272, Invalid=540, Unknown=0, NotChecked=0, Total=812 [2024-09-15 18:42:51,101 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:51,101 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:51,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-09-15 18:42:51,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2024-09-15 18:42:51,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 130 states have internal predecessors, (131), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-15 18:42:51,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2024-09-15 18:42:51,110 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 165 [2024-09-15 18:42:51,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:51,111 INFO L474 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2024-09-15 18:42:51,111 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-15 18:42:51,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:51,111 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2024-09-15 18:42:51,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-09-15 18:42:51,112 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:51,112 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:51,125 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:51,316 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:51,316 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:51,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:51,317 INFO L85 PathProgramCache]: Analyzing trace with hash -129055989, now seen corresponding path program 39 times [2024-09-15 18:42:51,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:51,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304494481] [2024-09-15 18:42:51,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:51,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 18:42:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-15 18:42:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-15 18:42:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-15 18:42:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-15 18:42:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-15 18:42:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-15 18:42:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-15 18:42:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-15 18:42:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-15 18:42:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-15 18:42:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-15 18:42:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-15 18:42:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-15 18:42:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-15 18:42:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-15 18:42:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-15 18:42:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-15 18:42:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-15 18:42:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-15 18:42:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:52,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-15 18:42:52,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:52,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304494481] [2024-09-15 18:42:52,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304494481] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:52,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547750580] [2024-09-15 18:42:52,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 18:42:52,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:52,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:52,049 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) [2024-09-15 18:42:52,054 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-09-15 18:42:52,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-09-15 18:42:52,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:52,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-15 18:42:52,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:52,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-15 18:42:52,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:52,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-15 18:42:52,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547750580] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:52,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:52,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 46 [2024-09-15 18:42:52,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209369697] [2024-09-15 18:42:52,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:52,900 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-15 18:42:52,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:52,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-15 18:42:52,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=1540, Unknown=0, NotChecked=0, Total=2070 [2024-09-15 18:42:52,901 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-15 18:42:53,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:53,130 INFO L93 Difference]: Finished difference Result 247 states and 269 transitions. [2024-09-15 18:42:53,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-15 18:42:53,130 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 172 [2024-09-15 18:42:53,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:53,132 INFO L225 Difference]: With dead ends: 247 [2024-09-15 18:42:53,132 INFO L226 Difference]: Without dead ends: 176 [2024-09-15 18:42:53,134 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 344 SyntacticMatches, 42 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=530, Invalid=1540, Unknown=0, NotChecked=0, Total=2070 [2024-09-15 18:42:53,135 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:53,135 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 406 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:42:53,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-09-15 18:42:53,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-09-15 18:42:53,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 131 states have internal predecessors, (132), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-15 18:42:53,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2024-09-15 18:42:53,146 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 172 [2024-09-15 18:42:53,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:53,146 INFO L474 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2024-09-15 18:42:53,146 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-15 18:42:53,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:53,147 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2024-09-15 18:42:53,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-09-15 18:42:53,147 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:53,147 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:53,171 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-09-15 18:42:53,348 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-09-15 18:42:53,348 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:53,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:53,348 INFO L85 PathProgramCache]: Analyzing trace with hash -196967529, now seen corresponding path program 40 times [2024-09-15 18:42:53,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:53,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851233857] [2024-09-15 18:42:53,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:53,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:53,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:53,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-15 18:42:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:53,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-15 18:42:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:53,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-15 18:42:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:53,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-15 18:42:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:53,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-15 18:42:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:53,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 18:42:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:53,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-15 18:42:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:53,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-15 18:42:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:53,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-15 18:42:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:53,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-15 18:42:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:54,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-15 18:42:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:54,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-15 18:42:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:54,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-15 18:42:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:54,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-15 18:42:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:54,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-15 18:42:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:54,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-15 18:42:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:54,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-15 18:42:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:54,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-15 18:42:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:54,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-15 18:42:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:54,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-15 18:42:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 250 proven. 631 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-15 18:42:54,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:54,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851233857] [2024-09-15 18:42:54,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851233857] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:54,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089467576] [2024-09-15 18:42:54,019 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 18:42:54,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:54,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:54,021 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) [2024-09-15 18:42:54,022 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-09-15 18:42:54,099 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 18:42:54,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:54,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-15 18:42:54,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:54,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-15 18:42:54,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:54,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-15 18:42:54,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089467576] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:54,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:54,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 29 [2024-09-15 18:42:54,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427937104] [2024-09-15 18:42:54,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:54,550 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-15 18:42:54,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:54,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-15 18:42:54,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2024-09-15 18:42:54,555 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-15 18:42:54,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:54,717 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2024-09-15 18:42:54,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-15 18:42:54,721 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 173 [2024-09-15 18:42:54,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:54,723 INFO L225 Difference]: With dead ends: 189 [2024-09-15 18:42:54,723 INFO L226 Difference]: Without dead ends: 187 [2024-09-15 18:42:54,723 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 364 SyntacticMatches, 42 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2024-09-15 18:42:54,728 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:54,729 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 104 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:54,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-09-15 18:42:54,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2024-09-15 18:42:54,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 136 states have internal predecessors, (137), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-15 18:42:54,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2024-09-15 18:42:54,749 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 173 [2024-09-15 18:42:54,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:54,750 INFO L474 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2024-09-15 18:42:54,751 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-15 18:42:54,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:54,751 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2024-09-15 18:42:54,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-09-15 18:42:54,755 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:54,755 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:54,783 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-09-15 18:42:54,955 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:54,956 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:54,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:54,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1190114605, now seen corresponding path program 41 times [2024-09-15 18:42:54,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:54,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003756410] [2024-09-15 18:42:54,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:54,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-15 18:42:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-15 18:42:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-15 18:42:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-15 18:42:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-15 18:42:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 18:42:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-15 18:42:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-15 18:42:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-15 18:42:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-15 18:42:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-15 18:42:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-15 18:42:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-15 18:42:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-15 18:42:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-15 18:42:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-15 18:42:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-15 18:42:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-15 18:42:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-15 18:42:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-15 18:42:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-15 18:42:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:55,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-15 18:42:55,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:55,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003756410] [2024-09-15 18:42:55,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003756410] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:55,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925224479] [2024-09-15 18:42:55,656 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 18:42:55,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:55,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:55,658 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) [2024-09-15 18:42:55,659 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-09-15 18:42:55,736 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-09-15 18:42:55,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:55,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-15 18:42:55,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-15 18:42:55,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:56,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-15 18:42:56,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925224479] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:56,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:56,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 48 [2024-09-15 18:42:56,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663654006] [2024-09-15 18:42:56,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:56,328 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-15 18:42:56,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:56,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-15 18:42:56,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=1679, Unknown=0, NotChecked=0, Total=2256 [2024-09-15 18:42:56,329 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 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) [2024-09-15 18:42:56,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:56,689 INFO L93 Difference]: Finished difference Result 258 states and 281 transitions. [2024-09-15 18:42:56,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-15 18:42:56,690 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 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 180 [2024-09-15 18:42:56,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:56,691 INFO L225 Difference]: With dead ends: 258 [2024-09-15 18:42:56,691 INFO L226 Difference]: Without dead ends: 184 [2024-09-15 18:42:56,696 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 360 SyntacticMatches, 44 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=577, Invalid=1679, Unknown=0, NotChecked=0, Total=2256 [2024-09-15 18:42:56,697 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:56,700 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 412 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 18:42:56,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-09-15 18:42:56,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-09-15 18:42:56,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 137 states have internal predecessors, (138), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-15 18:42:56,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2024-09-15 18:42:56,715 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 180 [2024-09-15 18:42:56,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:56,715 INFO L474 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2024-09-15 18:42:56,715 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 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) [2024-09-15 18:42:56,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:56,716 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2024-09-15 18:42:56,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-09-15 18:42:56,716 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:56,716 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:56,729 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:56,920 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:56,921 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:56,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:56,921 INFO L85 PathProgramCache]: Analyzing trace with hash 143665593, now seen corresponding path program 42 times [2024-09-15 18:42:56,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:56,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806643706] [2024-09-15 18:42:56,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:56,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-15 18:42:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 18:42:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-15 18:42:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 18:42:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-15 18:42:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-15 18:42:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-15 18:42:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-15 18:42:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-15 18:42:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-15 18:42:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-15 18:42:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-15 18:42:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-15 18:42:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-15 18:42:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-15 18:42:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-15 18:42:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-15 18:42:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-15 18:42:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-15 18:42:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-15 18:42:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-15 18:42:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 273 proven. 694 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-15 18:42:57,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:57,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806643706] [2024-09-15 18:42:57,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806643706] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:57,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605385105] [2024-09-15 18:42:57,412 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 18:42:57,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:57,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:57,413 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) [2024-09-15 18:42:57,414 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-09-15 18:42:57,490 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-09-15 18:42:57,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:57,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-15 18:42:57,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:57,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-15 18:42:57,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:58,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-15 18:42:58,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605385105] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:58,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:58,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 30 [2024-09-15 18:42:58,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814273697] [2024-09-15 18:42:58,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:58,109 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-15 18:42:58,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:58,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-15 18:42:58,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=557, Unknown=0, NotChecked=0, Total=870 [2024-09-15 18:42:58,110 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-15 18:42:58,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:58,241 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2024-09-15 18:42:58,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-15 18:42:58,241 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 181 [2024-09-15 18:42:58,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:58,243 INFO L225 Difference]: With dead ends: 197 [2024-09-15 18:42:58,243 INFO L226 Difference]: Without dead ends: 195 [2024-09-15 18:42:58,244 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 381 SyntacticMatches, 44 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=319, Invalid=611, Unknown=0, NotChecked=0, Total=930 [2024-09-15 18:42:58,244 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:58,244 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 97 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:58,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-09-15 18:42:58,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2024-09-15 18:42:58,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 141 states have (on average 1.0141843971631206) internal successors, (143), 142 states have internal predecessors, (143), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-15 18:42:58,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2024-09-15 18:42:58,258 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 181 [2024-09-15 18:42:58,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:58,258 INFO L474 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2024-09-15 18:42:58,259 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-15 18:42:58,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:58,259 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2024-09-15 18:42:58,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-09-15 18:42:58,260 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:58,260 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:58,276 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-09-15 18:42:58,462 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-09-15 18:42:58,463 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:58,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:58,463 INFO L85 PathProgramCache]: Analyzing trace with hash 16991435, now seen corresponding path program 43 times [2024-09-15 18:42:58,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:58,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443942643] [2024-09-15 18:42:58,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:58,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-15 18:42:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 18:42:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-15 18:42:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 18:42:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-15 18:42:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-15 18:42:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-15 18:42:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-15 18:42:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-15 18:42:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-15 18:42:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-15 18:42:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-15 18:42:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-15 18:42:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-15 18:42:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-15 18:42:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-15 18:42:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-15 18:42:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-15 18:42:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-15 18:42:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-15 18:42:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-15 18:42:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-15 18:42:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-15 18:42:59,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:59,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443942643] [2024-09-15 18:42:59,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443942643] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:59,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718359484] [2024-09-15 18:42:59,270 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-15 18:42:59,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:59,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:59,271 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) [2024-09-15 18:42:59,274 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-09-15 18:42:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:59,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-15 18:42:59,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-15 18:42:59,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:00,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-15 18:43:00,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718359484] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:00,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:00,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 50 [2024-09-15 18:43:00,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927415220] [2024-09-15 18:43:00,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:00,050 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-15 18:43:00,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:00,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-15 18:43:00,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=626, Invalid=1824, Unknown=0, NotChecked=0, Total=2450 [2024-09-15 18:43:00,051 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand has 50 states, 50 states have (on average 1.58) internal successors, (79), 50 states have internal predecessors, (79), 24 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-15 18:43:00,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:00,290 INFO L93 Difference]: Finished difference Result 269 states and 293 transitions. [2024-09-15 18:43:00,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-15 18:43:00,290 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.58) internal successors, (79), 50 states have internal predecessors, (79), 24 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 188 [2024-09-15 18:43:00,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:00,292 INFO L225 Difference]: With dead ends: 269 [2024-09-15 18:43:00,292 INFO L226 Difference]: Without dead ends: 192 [2024-09-15 18:43:00,293 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 376 SyntacticMatches, 46 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1735 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=626, Invalid=1824, Unknown=0, NotChecked=0, Total=2450 [2024-09-15 18:43:00,293 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:00,294 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 407 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:43:00,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-09-15 18:43:00,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-09-15 18:43:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 143 states have internal predecessors, (144), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-15 18:43:00,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2024-09-15 18:43:00,306 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 188 [2024-09-15 18:43:00,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:00,306 INFO L474 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2024-09-15 18:43:00,306 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.58) internal successors, (79), 50 states have internal predecessors, (79), 24 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-15 18:43:00,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:00,306 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2024-09-15 18:43:00,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-09-15 18:43:00,307 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:00,307 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:00,321 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-09-15 18:43:00,511 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-09-15 18:43:00,512 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:00,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:00,512 INFO L85 PathProgramCache]: Analyzing trace with hash 979135831, now seen corresponding path program 44 times [2024-09-15 18:43:00,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:00,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880287041] [2024-09-15 18:43:00,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:00,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:00,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:00,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-15 18:43:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:00,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 18:43:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:00,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-15 18:43:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:00,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-15 18:43:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:00,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 18:43:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:00,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-15 18:43:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:00,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-15 18:43:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:00,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-15 18:43:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:00,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-15 18:43:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:00,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-15 18:43:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:01,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-15 18:43:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:01,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-15 18:43:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:01,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-15 18:43:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:01,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-15 18:43:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:01,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-15 18:43:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:01,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-15 18:43:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:01,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-15 18:43:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:01,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-15 18:43:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:01,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-15 18:43:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:01,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-15 18:43:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:01,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-15 18:43:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:01,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-15 18:43:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 297 proven. 760 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-15 18:43:01,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:01,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880287041] [2024-09-15 18:43:01,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880287041] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:01,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347774944] [2024-09-15 18:43:01,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:43:01,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:01,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:01,014 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) [2024-09-15 18:43:01,019 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-09-15 18:43:01,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:43:01,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:43:01,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-09-15 18:43:01,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:01,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-15 18:43:01,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:01,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-15 18:43:01,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347774944] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:01,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:01,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 31 [2024-09-15 18:43:01,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450043230] [2024-09-15 18:43:01,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:01,889 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-15 18:43:01,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:01,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-15 18:43:01,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=592, Unknown=0, NotChecked=0, Total=930 [2024-09-15 18:43:01,890 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-15 18:43:02,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:02,028 INFO L93 Difference]: Finished difference Result 205 states and 207 transitions. [2024-09-15 18:43:02,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-15 18:43:02,029 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 189 [2024-09-15 18:43:02,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:02,030 INFO L225 Difference]: With dead ends: 205 [2024-09-15 18:43:02,030 INFO L226 Difference]: Without dead ends: 203 [2024-09-15 18:43:02,031 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 396 SyntacticMatches, 48 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=344, Invalid=648, Unknown=0, NotChecked=0, Total=992 [2024-09-15 18:43:02,031 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:02,031 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 98 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:43:02,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-09-15 18:43:02,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2024-09-15 18:43:02,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 148 states have internal predecessors, (149), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-15 18:43:02,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2024-09-15 18:43:02,042 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 189 [2024-09-15 18:43:02,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:02,042 INFO L474 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2024-09-15 18:43:02,042 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-15 18:43:02,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:02,043 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2024-09-15 18:43:02,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-09-15 18:43:02,043 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:02,043 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:02,056 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-09-15 18:43:02,247 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,46 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:02,247 INFO L399 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:02,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:02,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2104447853, now seen corresponding path program 45 times [2024-09-15 18:43:02,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:02,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908284949] [2024-09-15 18:43:02,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:02,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-15 18:43:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 18:43:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-15 18:43:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-15 18:43:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 18:43:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-15 18:43:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-15 18:43:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-15 18:43:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-15 18:43:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-15 18:43:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-15 18:43:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-15 18:43:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-15 18:43:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-15 18:43:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-15 18:43:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-15 18:43:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-15 18:43:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-15 18:43:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-15 18:43:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-15 18:43:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-15 18:43:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-15 18:43:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-15 18:43:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:03,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-15 18:43:03,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:03,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908284949] [2024-09-15 18:43:03,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908284949] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:03,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812569919] [2024-09-15 18:43:03,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 18:43:03,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:03,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:03,095 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) [2024-09-15 18:43:03,098 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-09-15 18:43:03,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-09-15 18:43:03,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:43:03,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-15 18:43:03,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-15 18:43:03,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:03,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-15 18:43:03,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812569919] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:03,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:03,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 52 [2024-09-15 18:43:03,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664813174] [2024-09-15 18:43:03,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:03,929 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-15 18:43:03,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:03,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-15 18:43:03,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2024-09-15 18:43:03,930 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 52 states have internal predecessors, (82), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-15 18:43:04,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:04,123 INFO L93 Difference]: Finished difference Result 280 states and 305 transitions. [2024-09-15 18:43:04,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-15 18:43:04,124 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 52 states have internal predecessors, (82), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 196 [2024-09-15 18:43:04,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:04,125 INFO L225 Difference]: With dead ends: 280 [2024-09-15 18:43:04,125 INFO L226 Difference]: Without dead ends: 200 [2024-09-15 18:43:04,126 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 392 SyntacticMatches, 48 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1883 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2024-09-15 18:43:04,126 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:04,126 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 454 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:43:04,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-09-15 18:43:04,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2024-09-15 18:43:04,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 148 states have (on average 1.0135135135135136) internal successors, (150), 149 states have internal predecessors, (150), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-15 18:43:04,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2024-09-15 18:43:04,137 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 196 [2024-09-15 18:43:04,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:04,137 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2024-09-15 18:43:04,137 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 52 states have internal predecessors, (82), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-15 18:43:04,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:04,138 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2024-09-15 18:43:04,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-09-15 18:43:04,138 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:04,138 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:04,152 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-09-15 18:43:04,342 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:04,343 INFO L399 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:04,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:04,343 INFO L85 PathProgramCache]: Analyzing trace with hash 344797177, now seen corresponding path program 46 times [2024-09-15 18:43:04,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:04,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730868838] [2024-09-15 18:43:04,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:04,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-15 18:43:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-15 18:43:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 18:43:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-15 18:43:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-15 18:43:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-15 18:43:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-15 18:43:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-15 18:43:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-15 18:43:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-15 18:43:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-15 18:43:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-15 18:43:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-15 18:43:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-15 18:43:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-15 18:43:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-15 18:43:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-15 18:43:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-15 18:43:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-15 18:43:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-15 18:43:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-15 18:43:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-15 18:43:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-15 18:43:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:04,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 322 proven. 829 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-15 18:43:04,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:04,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730868838] [2024-09-15 18:43:04,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730868838] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:04,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567583077] [2024-09-15 18:43:04,878 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 18:43:04,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:04,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:04,880 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) [2024-09-15 18:43:04,885 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-09-15 18:43:04,955 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 18:43:04,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:43:04,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-15 18:43:04,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:05,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-15 18:43:05,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-15 18:43:05,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567583077] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:05,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:05,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 32 [2024-09-15 18:43:05,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218886841] [2024-09-15 18:43:05,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:05,597 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-15 18:43:05,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:05,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-15 18:43:05,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=628, Unknown=0, NotChecked=0, Total=992 [2024-09-15 18:43:05,598 INFO L87 Difference]: Start difference. First operand 200 states and 201 transitions. Second operand has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-15 18:43:05,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:05,745 INFO L93 Difference]: Finished difference Result 213 states and 215 transitions. [2024-09-15 18:43:05,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-15 18:43:05,746 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 197 [2024-09-15 18:43:05,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:05,747 INFO L225 Difference]: With dead ends: 213 [2024-09-15 18:43:05,747 INFO L226 Difference]: Without dead ends: 211 [2024-09-15 18:43:05,747 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 415 SyntacticMatches, 48 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=370, Invalid=686, Unknown=0, NotChecked=0, Total=1056 [2024-09-15 18:43:05,748 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:05,748 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 99 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:43:05,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-09-15 18:43:05,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2024-09-15 18:43:05,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 153 states have (on average 1.0130718954248366) internal successors, (155), 154 states have internal predecessors, (155), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-15 18:43:05,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2024-09-15 18:43:05,760 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 197 [2024-09-15 18:43:05,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:05,760 INFO L474 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2024-09-15 18:43:05,761 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-15 18:43:05,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:05,761 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2024-09-15 18:43:05,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-15 18:43:05,762 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:05,762 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:05,777 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-09-15 18:43:05,962 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-09-15 18:43:05,963 INFO L399 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:05,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:05,964 INFO L85 PathProgramCache]: Analyzing trace with hash 767473291, now seen corresponding path program 47 times [2024-09-15 18:43:05,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:05,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612853703] [2024-09-15 18:43:05,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:05,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-15 18:43:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-15 18:43:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 18:43:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-15 18:43:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-15 18:43:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-15 18:43:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-15 18:43:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-15 18:43:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-15 18:43:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-15 18:43:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-15 18:43:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-15 18:43:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-15 18:43:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-15 18:43:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-15 18:43:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-15 18:43:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-15 18:43:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-15 18:43:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-15 18:43:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-15 18:43:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-15 18:43:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-15 18:43:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-15 18:43:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-15 18:43:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:06,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-15 18:43:06,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:06,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612853703] [2024-09-15 18:43:06,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612853703] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:06,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713757975] [2024-09-15 18:43:06,989 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 18:43:06,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:06,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:06,990 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) [2024-09-15 18:43:06,991 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-09-15 18:43:07,075 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-09-15 18:43:07,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:43:07,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-09-15 18:43:07,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-15 18:43:07,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-15 18:43:08,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713757975] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:08,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:08,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 54 [2024-09-15 18:43:08,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366597928] [2024-09-15 18:43:08,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:08,019 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-15 18:43:08,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:08,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-15 18:43:08,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=730, Invalid=2132, Unknown=0, NotChecked=0, Total=2862 [2024-09-15 18:43:08,020 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 54 states have internal predecessors, (85), 26 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-15 18:43:08,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:08,236 INFO L93 Difference]: Finished difference Result 291 states and 317 transitions. [2024-09-15 18:43:08,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-15 18:43:08,237 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 54 states have internal predecessors, (85), 26 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 204 [2024-09-15 18:43:08,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:08,238 INFO L225 Difference]: With dead ends: 291 [2024-09-15 18:43:08,238 INFO L226 Difference]: Without dead ends: 208 [2024-09-15 18:43:08,239 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 408 SyntacticMatches, 50 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2037 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=730, Invalid=2132, Unknown=0, NotChecked=0, Total=2862 [2024-09-15 18:43:08,239 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:08,240 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 381 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:43:08,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-09-15 18:43:08,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-09-15 18:43:08,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 155 states have internal predecessors, (156), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-15 18:43:08,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2024-09-15 18:43:08,252 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 204 [2024-09-15 18:43:08,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:08,252 INFO L474 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2024-09-15 18:43:08,252 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 54 states have internal predecessors, (85), 26 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-15 18:43:08,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:08,252 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2024-09-15 18:43:08,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-09-15 18:43:08,253 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:08,253 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:08,266 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-09-15 18:43:08,453 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-09-15 18:43:08,454 INFO L399 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:08,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:08,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1017988887, now seen corresponding path program 48 times [2024-09-15 18:43:08,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:08,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591153664] [2024-09-15 18:43:08,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:08,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 18:43:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-15 18:43:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-15 18:43:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-15 18:43:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-15 18:43:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-15 18:43:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-15 18:43:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-15 18:43:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-15 18:43:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-15 18:43:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-15 18:43:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-15 18:43:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-15 18:43:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-15 18:43:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-15 18:43:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-15 18:43:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-15 18:43:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-15 18:43:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-15 18:43:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-15 18:43:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-15 18:43:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-15 18:43:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-15 18:43:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-15 18:43:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:09,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 348 proven. 901 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-15 18:43:09,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:09,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591153664] [2024-09-15 18:43:09,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591153664] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:09,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759072869] [2024-09-15 18:43:09,034 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 18:43:09,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:09,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:09,038 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) [2024-09-15 18:43:09,039 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-09-15 18:43:09,139 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-09-15 18:43:09,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:43:09,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-15 18:43:09,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-15 18:43:09,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:09,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-15 18:43:09,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759072869] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:09,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:09,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 33 [2024-09-15 18:43:09,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958287393] [2024-09-15 18:43:09,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:09,856 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-15 18:43:09,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:09,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-15 18:43:09,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=665, Unknown=0, NotChecked=0, Total=1056 [2024-09-15 18:43:09,857 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 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) [2024-09-15 18:43:10,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:10,003 INFO L93 Difference]: Finished difference Result 221 states and 223 transitions. [2024-09-15 18:43:10,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-15 18:43:10,003 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 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 205 [2024-09-15 18:43:10,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:10,005 INFO L225 Difference]: With dead ends: 221 [2024-09-15 18:43:10,005 INFO L226 Difference]: Without dead ends: 219 [2024-09-15 18:43:10,005 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 432 SyntacticMatches, 50 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=725, Unknown=0, NotChecked=0, Total=1122 [2024-09-15 18:43:10,005 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:10,005 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 114 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:43:10,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-09-15 18:43:10,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2024-09-15 18:43:10,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 160 states have internal predecessors, (161), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-15 18:43:10,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2024-09-15 18:43:10,017 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 205 [2024-09-15 18:43:10,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:10,017 INFO L474 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2024-09-15 18:43:10,017 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 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) [2024-09-15 18:43:10,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:10,018 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2024-09-15 18:43:10,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-09-15 18:43:10,018 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:10,019 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:10,032 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-09-15 18:43:10,222 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:10,223 INFO L399 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:10,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:10,223 INFO L85 PathProgramCache]: Analyzing trace with hash 151650733, now seen corresponding path program 49 times [2024-09-15 18:43:10,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:10,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159686733] [2024-09-15 18:43:10,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:10,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-15 18:43:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-15 18:43:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-15 18:43:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-15 18:43:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-15 18:43:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-15 18:43:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-15 18:43:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-15 18:43:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-15 18:43:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-15 18:43:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-15 18:43:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-15 18:43:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-15 18:43:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-15 18:43:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-15 18:43:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-15 18:43:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-15 18:43:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-15 18:43:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-15 18:43:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-15 18:43:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-15 18:43:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-15 18:43:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-15 18:43:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-15 18:43:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-15 18:43:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-15 18:43:11,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:11,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159686733] [2024-09-15 18:43:11,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159686733] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:11,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712770633] [2024-09-15 18:43:11,263 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-15 18:43:11,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:11,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:11,264 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) [2024-09-15 18:43:11,265 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-09-15 18:43:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:11,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-15 18:43:11,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:11,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-15 18:43:11,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:12,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-15 18:43:12,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712770633] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:12,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:12,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 56 [2024-09-15 18:43:12,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093931420] [2024-09-15 18:43:12,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:12,289 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-15 18:43:12,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:12,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-15 18:43:12,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=785, Invalid=2295, Unknown=0, NotChecked=0, Total=3080 [2024-09-15 18:43:12,290 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 56 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-15 18:43:12,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:12,491 INFO L93 Difference]: Finished difference Result 302 states and 329 transitions. [2024-09-15 18:43:12,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-15 18:43:12,491 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 56 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 212 [2024-09-15 18:43:12,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:12,493 INFO L225 Difference]: With dead ends: 302 [2024-09-15 18:43:12,493 INFO L226 Difference]: Without dead ends: 216 [2024-09-15 18:43:12,493 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 424 SyntacticMatches, 52 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2197 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=785, Invalid=2295, Unknown=0, NotChecked=0, Total=3080 [2024-09-15 18:43:12,494 INFO L434 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:12,494 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 510 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:43:12,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-09-15 18:43:12,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-09-15 18:43:12,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 160 states have (on average 1.0125) internal successors, (162), 161 states have internal predecessors, (162), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-15 18:43:12,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2024-09-15 18:43:12,508 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 212 [2024-09-15 18:43:12,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:12,508 INFO L474 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2024-09-15 18:43:12,508 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 56 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-15 18:43:12,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:12,508 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2024-09-15 18:43:12,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-09-15 18:43:12,509 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:12,509 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:12,521 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-09-15 18:43:12,712 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-09-15 18:43:12,713 INFO L399 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:12,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:12,713 INFO L85 PathProgramCache]: Analyzing trace with hash -573225415, now seen corresponding path program 50 times [2024-09-15 18:43:12,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:12,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471671403] [2024-09-15 18:43:12,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:12,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-15 18:43:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 18:43:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-15 18:43:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 18:43:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-15 18:43:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 18:43:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-15 18:43:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-15 18:43:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-15 18:43:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-15 18:43:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-15 18:43:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-15 18:43:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-15 18:43:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-15 18:43:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-15 18:43:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-15 18:43:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-15 18:43:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-15 18:43:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-15 18:43:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-15 18:43:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-15 18:43:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-15 18:43:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-15 18:43:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-15 18:43:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-15 18:43:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:13,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 375 proven. 976 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-15 18:43:13,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:13,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471671403] [2024-09-15 18:43:13,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471671403] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:13,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165360151] [2024-09-15 18:43:13,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:43:13,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:13,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:13,400 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) [2024-09-15 18:43:13,401 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-09-15 18:43:13,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:43:13,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:43:13,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-15 18:43:13,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:13,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-15 18:43:13,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:14,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-15 18:43:14,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165360151] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:14,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:14,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 34 [2024-09-15 18:43:14,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397705035] [2024-09-15 18:43:14,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:14,304 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-15 18:43:14,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:14,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-15 18:43:14,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=703, Unknown=0, NotChecked=0, Total=1122 [2024-09-15 18:43:14,305 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-15 18:43:14,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:14,438 INFO L93 Difference]: Finished difference Result 229 states and 231 transitions. [2024-09-15 18:43:14,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-15 18:43:14,438 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 213 [2024-09-15 18:43:14,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:14,439 INFO L225 Difference]: With dead ends: 229 [2024-09-15 18:43:14,439 INFO L226 Difference]: Without dead ends: 227 [2024-09-15 18:43:14,440 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 447 SyntacticMatches, 54 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=425, Invalid=765, Unknown=0, NotChecked=0, Total=1190 [2024-09-15 18:43:14,440 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:14,440 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 112 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:43:14,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-09-15 18:43:14,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2024-09-15 18:43:14,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 165 states have (on average 1.0121212121212122) internal successors, (167), 166 states have internal predecessors, (167), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-15 18:43:14,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2024-09-15 18:43:14,452 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 213 [2024-09-15 18:43:14,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:14,453 INFO L474 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2024-09-15 18:43:14,453 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-15 18:43:14,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:14,453 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2024-09-15 18:43:14,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-09-15 18:43:14,454 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:14,454 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:14,466 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-09-15 18:43:14,658 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:14,658 INFO L399 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:14,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:14,659 INFO L85 PathProgramCache]: Analyzing trace with hash 899487819, now seen corresponding path program 51 times [2024-09-15 18:43:14,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:14,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722031286] [2024-09-15 18:43:14,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:14,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-15 18:43:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 18:43:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-15 18:43:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 18:43:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-15 18:43:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 18:43:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-15 18:43:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-15 18:43:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-15 18:43:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-15 18:43:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-15 18:43:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-15 18:43:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-15 18:43:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-15 18:43:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-15 18:43:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-15 18:43:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-15 18:43:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-15 18:43:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-15 18:43:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-15 18:43:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-15 18:43:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-15 18:43:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-15 18:43:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-15 18:43:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-15 18:43:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-15 18:43:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:15,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-15 18:43:15,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:15,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722031286] [2024-09-15 18:43:15,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722031286] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:15,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765064747] [2024-09-15 18:43:15,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 18:43:15,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:15,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:15,723 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) [2024-09-15 18:43:15,725 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-09-15 18:43:15,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-09-15 18:43:15,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:43:15,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-15 18:43:15,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:15,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-15 18:43:15,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-15 18:43:16,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765064747] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:16,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:16,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 58 [2024-09-15 18:43:16,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486477588] [2024-09-15 18:43:16,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:16,788 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-15 18:43:16,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:16,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-15 18:43:16,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=842, Invalid=2464, Unknown=0, NotChecked=0, Total=3306 [2024-09-15 18:43:16,789 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 58 states have internal predecessors, (91), 28 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-15 18:43:17,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:17,093 INFO L93 Difference]: Finished difference Result 313 states and 341 transitions. [2024-09-15 18:43:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-09-15 18:43:17,093 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 58 states have internal predecessors, (91), 28 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 220 [2024-09-15 18:43:17,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:17,094 INFO L225 Difference]: With dead ends: 313 [2024-09-15 18:43:17,095 INFO L226 Difference]: Without dead ends: 224 [2024-09-15 18:43:17,095 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 440 SyntacticMatches, 54 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2363 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=842, Invalid=2464, Unknown=0, NotChecked=0, Total=3306 [2024-09-15 18:43:17,095 INFO L434 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:17,095 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 622 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:43:17,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-09-15 18:43:17,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2024-09-15 18:43:17,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 166 states have (on average 1.0120481927710843) internal successors, (168), 167 states have internal predecessors, (168), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-15 18:43:17,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2024-09-15 18:43:17,108 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 220 [2024-09-15 18:43:17,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:17,108 INFO L474 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2024-09-15 18:43:17,108 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 58 states have internal predecessors, (91), 28 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-15 18:43:17,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:17,109 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2024-09-15 18:43:17,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-09-15 18:43:17,109 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:17,110 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:17,122 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-09-15 18:43:17,313 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,53 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:17,313 INFO L399 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:17,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:17,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1381044439, now seen corresponding path program 52 times [2024-09-15 18:43:17,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:17,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695771252] [2024-09-15 18:43:17,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:17,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-15 18:43:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-15 18:43:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-15 18:43:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-15 18:43:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-15 18:43:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-15 18:43:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-15 18:43:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-15 18:43:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-15 18:43:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-15 18:43:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-15 18:43:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-15 18:43:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-15 18:43:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-15 18:43:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-15 18:43:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-15 18:43:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-15 18:43:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-15 18:43:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-15 18:43:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-15 18:43:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-15 18:43:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-15 18:43:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-15 18:43:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-15 18:43:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-15 18:43:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-15 18:43:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 403 proven. 1054 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-15 18:43:17,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:17,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695771252] [2024-09-15 18:43:17,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695771252] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:17,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067031345] [2024-09-15 18:43:17,970 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 18:43:17,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:17,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:17,972 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:43:17,973 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-09-15 18:43:18,053 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 18:43:18,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:43:18,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-15 18:43:18,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-15 18:43:18,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:18,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-15 18:43:18,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067031345] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:18,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:18,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 35 [2024-09-15 18:43:18,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563691075] [2024-09-15 18:43:18,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:18,860 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-15 18:43:18,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:18,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-15 18:43:18,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=742, Unknown=0, NotChecked=0, Total=1190 [2024-09-15 18:43:18,861 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 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) [2024-09-15 18:43:19,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:19,026 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2024-09-15 18:43:19,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-15 18:43:19,027 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 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 221 [2024-09-15 18:43:19,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:19,028 INFO L225 Difference]: With dead ends: 237 [2024-09-15 18:43:19,028 INFO L226 Difference]: Without dead ends: 235 [2024-09-15 18:43:19,028 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 466 SyntacticMatches, 54 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=454, Invalid=806, Unknown=0, NotChecked=0, Total=1260 [2024-09-15 18:43:19,029 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:19,029 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:43:19,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-09-15 18:43:19,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2024-09-15 18:43:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 171 states have (on average 1.0116959064327486) internal successors, (173), 172 states have internal predecessors, (173), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-15 18:43:19,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2024-09-15 18:43:19,041 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 221 [2024-09-15 18:43:19,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:19,041 INFO L474 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2024-09-15 18:43:19,042 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 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) [2024-09-15 18:43:19,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:19,042 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2024-09-15 18:43:19,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-09-15 18:43:19,043 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:19,043 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:19,059 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-09-15 18:43:19,246 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-09-15 18:43:19,246 INFO L399 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:19,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:19,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1692155923, now seen corresponding path program 53 times [2024-09-15 18:43:19,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:19,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384714915] [2024-09-15 18:43:19,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:19,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-15 18:43:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-15 18:43:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-15 18:43:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-15 18:43:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-15 18:43:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-15 18:43:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-15 18:43:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-15 18:43:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-15 18:43:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-15 18:43:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-15 18:43:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-15 18:43:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-15 18:43:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-15 18:43:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-15 18:43:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-15 18:43:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-15 18:43:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-15 18:43:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-15 18:43:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-15 18:43:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-15 18:43:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-15 18:43:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-15 18:43:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-15 18:43:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-15 18:43:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-15 18:43:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-15 18:43:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:20,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-15 18:43:20,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:20,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384714915] [2024-09-15 18:43:20,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384714915] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:20,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57423229] [2024-09-15 18:43:20,424 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 18:43:20,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:20,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:20,428 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:43:20,429 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-09-15 18:43:20,534 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2024-09-15 18:43:20,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:43:20,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-15 18:43:20,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:20,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-15 18:43:20,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-15 18:43:21,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57423229] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:21,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:21,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 60 [2024-09-15 18:43:21,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879702455] [2024-09-15 18:43:21,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:21,598 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-15 18:43:21,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:21,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-15 18:43:21,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=901, Invalid=2639, Unknown=0, NotChecked=0, Total=3540 [2024-09-15 18:43:21,599 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 60 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-15 18:43:21,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:21,837 INFO L93 Difference]: Finished difference Result 324 states and 353 transitions. [2024-09-15 18:43:21,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-09-15 18:43:21,838 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 60 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 228 [2024-09-15 18:43:21,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:21,839 INFO L225 Difference]: With dead ends: 324 [2024-09-15 18:43:21,839 INFO L226 Difference]: Without dead ends: 232 [2024-09-15 18:43:21,840 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 456 SyntacticMatches, 56 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2535 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=901, Invalid=2639, Unknown=0, NotChecked=0, Total=3540 [2024-09-15 18:43:21,840 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:21,840 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 332 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:43:21,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-09-15 18:43:21,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-09-15 18:43:21,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 173 states have internal predecessors, (174), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-15 18:43:21,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2024-09-15 18:43:21,853 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 228 [2024-09-15 18:43:21,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:21,853 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2024-09-15 18:43:21,853 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 60 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-15 18:43:21,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:21,854 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2024-09-15 18:43:21,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-09-15 18:43:21,855 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:21,855 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:21,868 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2024-09-15 18:43:22,058 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:22,059 INFO L399 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:22,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:22,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1244894087, now seen corresponding path program 54 times [2024-09-15 18:43:22,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:22,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709385142] [2024-09-15 18:43:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:22,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-15 18:43:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-15 18:43:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-15 18:43:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-15 18:43:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 18:43:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-15 18:43:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-15 18:43:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-15 18:43:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-15 18:43:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-15 18:43:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-15 18:43:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-15 18:43:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-15 18:43:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-15 18:43:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-15 18:43:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-15 18:43:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-15 18:43:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-15 18:43:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-15 18:43:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-15 18:43:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-15 18:43:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-15 18:43:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-15 18:43:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-15 18:43:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-15 18:43:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-15 18:43:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-15 18:43:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:22,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 432 proven. 1135 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-15 18:43:22,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:22,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709385142] [2024-09-15 18:43:22,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709385142] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:22,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145032935] [2024-09-15 18:43:22,769 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 18:43:22,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:22,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:22,771 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:43:22,772 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-09-15 18:43:22,870 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2024-09-15 18:43:22,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:43:22,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-15 18:43:22,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:23,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-15 18:43:23,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:23,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-15 18:43:23,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145032935] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:23,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:23,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 36 [2024-09-15 18:43:23,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711989393] [2024-09-15 18:43:23,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:23,722 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-15 18:43:23,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:23,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-15 18:43:23,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2024-09-15 18:43:23,723 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-15 18:43:23,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:23,911 INFO L93 Difference]: Finished difference Result 245 states and 247 transitions. [2024-09-15 18:43:23,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-15 18:43:23,911 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 229 [2024-09-15 18:43:23,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:23,912 INFO L225 Difference]: With dead ends: 245 [2024-09-15 18:43:23,912 INFO L226 Difference]: Without dead ends: 243 [2024-09-15 18:43:23,913 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 483 SyntacticMatches, 56 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=484, Invalid=848, Unknown=0, NotChecked=0, Total=1332 [2024-09-15 18:43:23,913 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:23,913 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 104 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:43:23,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-09-15 18:43:23,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2024-09-15 18:43:23,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 177 states have (on average 1.0112994350282485) internal successors, (179), 178 states have internal predecessors, (179), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-15 18:43:23,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2024-09-15 18:43:23,927 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 229 [2024-09-15 18:43:23,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:23,928 INFO L474 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2024-09-15 18:43:23,928 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-15 18:43:23,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:23,928 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2024-09-15 18:43:23,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-09-15 18:43:23,929 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:23,929 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:23,944 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-09-15 18:43:24,129 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:24,130 INFO L399 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:24,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:24,130 INFO L85 PathProgramCache]: Analyzing trace with hash 783968779, now seen corresponding path program 55 times [2024-09-15 18:43:24,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:24,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562749713] [2024-09-15 18:43:24,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:24,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-15 18:43:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-15 18:43:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-15 18:43:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-15 18:43:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 18:43:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-15 18:43:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-15 18:43:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-15 18:43:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-15 18:43:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-15 18:43:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-15 18:43:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-15 18:43:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-15 18:43:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-15 18:43:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-15 18:43:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-15 18:43:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-15 18:43:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-15 18:43:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-15 18:43:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-15 18:43:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-15 18:43:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-15 18:43:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-15 18:43:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-15 18:43:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-15 18:43:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-15 18:43:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-15 18:43:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-15 18:43:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-15 18:43:25,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:25,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562749713] [2024-09-15 18:43:25,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562749713] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:25,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971834541] [2024-09-15 18:43:25,405 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-15 18:43:25,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:25,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:25,406 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:43:25,407 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-09-15 18:43:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:25,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-15 18:43:25,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:25,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-15 18:43:25,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:26,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-15 18:43:26,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971834541] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:26,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:26,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 62 [2024-09-15 18:43:26,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197581728] [2024-09-15 18:43:26,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:26,628 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-15 18:43:26,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:26,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-15 18:43:26,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=962, Invalid=2820, Unknown=0, NotChecked=0, Total=3782 [2024-09-15 18:43:26,629 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 62 states have internal predecessors, (97), 30 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-15 18:43:26,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:26,922 INFO L93 Difference]: Finished difference Result 335 states and 365 transitions. [2024-09-15 18:43:26,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-09-15 18:43:26,923 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 62 states have internal predecessors, (97), 30 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 236 [2024-09-15 18:43:26,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:26,924 INFO L225 Difference]: With dead ends: 335 [2024-09-15 18:43:26,924 INFO L226 Difference]: Without dead ends: 240 [2024-09-15 18:43:26,925 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 472 SyntacticMatches, 58 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2713 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=962, Invalid=2820, Unknown=0, NotChecked=0, Total=3782 [2024-09-15 18:43:26,925 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:26,926 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 497 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:43:26,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-09-15 18:43:26,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-09-15 18:43:26,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 178 states have (on average 1.0112359550561798) internal successors, (180), 179 states have internal predecessors, (180), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-15 18:43:26,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2024-09-15 18:43:26,942 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 236 [2024-09-15 18:43:26,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:26,942 INFO L474 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2024-09-15 18:43:26,942 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 62 states have internal predecessors, (97), 30 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-15 18:43:26,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:26,943 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2024-09-15 18:43:26,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-09-15 18:43:26,944 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:26,944 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:26,960 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-09-15 18:43:27,145 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-09-15 18:43:27,145 INFO L399 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:27,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:27,146 INFO L85 PathProgramCache]: Analyzing trace with hash 828623511, now seen corresponding path program 56 times [2024-09-15 18:43:27,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:27,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096487765] [2024-09-15 18:43:27,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:27,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 18:43:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-15 18:43:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 18:43:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-15 18:43:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-15 18:43:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-15 18:43:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-15 18:43:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-15 18:43:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-15 18:43:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-15 18:43:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-15 18:43:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-15 18:43:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-15 18:43:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-15 18:43:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-15 18:43:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-15 18:43:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-15 18:43:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-15 18:43:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-15 18:43:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-15 18:43:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-15 18:43:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-15 18:43:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-15 18:43:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-15 18:43:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-15 18:43:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-15 18:43:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-15 18:43:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-15 18:43:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:27,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 462 proven. 1219 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-15 18:43:27,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:27,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096487765] [2024-09-15 18:43:27,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096487765] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:27,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409797500] [2024-09-15 18:43:27,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:43:27,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:27,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:27,954 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:43:27,956 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-09-15 18:43:28,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:43:28,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:43:28,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-09-15 18:43:28,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:28,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-15 18:43:28,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:28,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-15 18:43:28,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409797500] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:28,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:28,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 37 [2024-09-15 18:43:28,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786707603] [2024-09-15 18:43:28,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:28,999 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-15 18:43:28,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:28,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-15 18:43:29,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=823, Unknown=0, NotChecked=0, Total=1332 [2024-09-15 18:43:29,000 INFO L87 Difference]: Start difference. First operand 240 states and 241 transitions. Second operand has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-15 18:43:29,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:29,196 INFO L93 Difference]: Finished difference Result 253 states and 255 transitions. [2024-09-15 18:43:29,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-15 18:43:29,197 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 237 [2024-09-15 18:43:29,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:29,198 INFO L225 Difference]: With dead ends: 253 [2024-09-15 18:43:29,198 INFO L226 Difference]: Without dead ends: 251 [2024-09-15 18:43:29,199 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 498 SyntacticMatches, 60 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2024-09-15 18:43:29,199 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:29,199 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 91 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:43:29,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-09-15 18:43:29,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 247. [2024-09-15 18:43:29,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 183 states have (on average 1.010928961748634) internal successors, (185), 184 states have internal predecessors, (185), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-15 18:43:29,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2024-09-15 18:43:29,213 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 237 [2024-09-15 18:43:29,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:29,214 INFO L474 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2024-09-15 18:43:29,214 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-15 18:43:29,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:29,214 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2024-09-15 18:43:29,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-09-15 18:43:29,215 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:29,215 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:29,231 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-09-15 18:43:29,415 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-09-15 18:43:29,416 INFO L399 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:29,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:29,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1507815891, now seen corresponding path program 57 times [2024-09-15 18:43:29,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:29,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181682597] [2024-09-15 18:43:29,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:29,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 18:43:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-15 18:43:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 18:43:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-15 18:43:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-15 18:43:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-15 18:43:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-15 18:43:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-15 18:43:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-15 18:43:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-15 18:43:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-15 18:43:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-15 18:43:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-15 18:43:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-15 18:43:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-15 18:43:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-15 18:43:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-15 18:43:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-15 18:43:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-15 18:43:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-15 18:43:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-15 18:43:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-15 18:43:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-15 18:43:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-15 18:43:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-15 18:43:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-15 18:43:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-15 18:43:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-15 18:43:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-15 18:43:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:30,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-15 18:43:30,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:30,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181682597] [2024-09-15 18:43:30,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181682597] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:30,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354422299] [2024-09-15 18:43:30,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 18:43:30,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:30,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:30,737 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:43:30,738 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-09-15 18:43:30,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-09-15 18:43:30,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:43:30,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-15 18:43:30,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:30,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-15 18:43:30,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-15 18:43:32,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354422299] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:32,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:32,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 64 [2024-09-15 18:43:32,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300653114] [2024-09-15 18:43:32,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:32,074 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-15 18:43:32,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:32,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-15 18:43:32,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1025, Invalid=3007, Unknown=0, NotChecked=0, Total=4032 [2024-09-15 18:43:32,075 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand has 64 states, 64 states have (on average 1.5625) internal successors, (100), 64 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-15 18:43:32,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:32,373 INFO L93 Difference]: Finished difference Result 346 states and 377 transitions. [2024-09-15 18:43:32,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-15 18:43:32,373 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.5625) internal successors, (100), 64 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 244 [2024-09-15 18:43:32,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:32,375 INFO L225 Difference]: With dead ends: 346 [2024-09-15 18:43:32,375 INFO L226 Difference]: Without dead ends: 248 [2024-09-15 18:43:32,376 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 488 SyntacticMatches, 60 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2897 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1025, Invalid=3007, Unknown=0, NotChecked=0, Total=4032 [2024-09-15 18:43:32,376 INFO L434 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:32,376 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 380 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:43:32,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-09-15 18:43:32,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2024-09-15 18:43:32,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 184 states have (on average 1.0108695652173914) internal successors, (186), 185 states have internal predecessors, (186), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-15 18:43:32,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 249 transitions. [2024-09-15 18:43:32,392 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 249 transitions. Word has length 244 [2024-09-15 18:43:32,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:32,392 INFO L474 AbstractCegarLoop]: Abstraction has 248 states and 249 transitions. [2024-09-15 18:43:32,392 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.5625) internal successors, (100), 64 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-15 18:43:32,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:32,393 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 249 transitions. [2024-09-15 18:43:32,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-09-15 18:43:32,393 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:32,393 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:32,407 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-09-15 18:43:32,597 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-09-15 18:43:32,598 INFO L399 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:32,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:32,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1361665351, now seen corresponding path program 58 times [2024-09-15 18:43:32,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:32,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007872532] [2024-09-15 18:43:32,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:32,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 18:43:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-15 18:43:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-15 18:43:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 18:43:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-15 18:43:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-15 18:43:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-15 18:43:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-15 18:43:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-15 18:43:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-15 18:43:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-15 18:43:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-15 18:43:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-15 18:43:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-15 18:43:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-15 18:43:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-15 18:43:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-15 18:43:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-15 18:43:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-15 18:43:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-15 18:43:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-15 18:43:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-15 18:43:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-15 18:43:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-15 18:43:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-15 18:43:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-15 18:43:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-15 18:43:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-15 18:43:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-15 18:43:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:33,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 493 proven. 1306 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-15 18:43:33,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:33,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007872532] [2024-09-15 18:43:33,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007872532] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:33,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451285662] [2024-09-15 18:43:33,433 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 18:43:33,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:33,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:33,434 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:43:33,436 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-09-15 18:43:33,517 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 18:43:33,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:43:33,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-15 18:43:33,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:33,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-15 18:43:33,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:34,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-15 18:43:34,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451285662] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:34,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:34,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 38 [2024-09-15 18:43:34,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561760262] [2024-09-15 18:43:34,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:34,487 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-15 18:43:34,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:34,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-15 18:43:34,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=865, Unknown=0, NotChecked=0, Total=1406 [2024-09-15 18:43:34,487 INFO L87 Difference]: Start difference. First operand 248 states and 249 transitions. Second operand has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-15 18:43:34,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:34,670 INFO L93 Difference]: Finished difference Result 261 states and 263 transitions. [2024-09-15 18:43:34,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-15 18:43:34,671 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 245 [2024-09-15 18:43:34,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:34,672 INFO L225 Difference]: With dead ends: 261 [2024-09-15 18:43:34,672 INFO L226 Difference]: Without dead ends: 259 [2024-09-15 18:43:34,673 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 517 SyntacticMatches, 60 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=547, Invalid=935, Unknown=0, NotChecked=0, Total=1482 [2024-09-15 18:43:34,673 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:34,673 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 105 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:43:34,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-09-15 18:43:34,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2024-09-15 18:43:34,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 189 states have (on average 1.0105820105820107) internal successors, (191), 190 states have internal predecessors, (191), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-15 18:43:34,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2024-09-15 18:43:34,693 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 245 [2024-09-15 18:43:34,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:34,693 INFO L474 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2024-09-15 18:43:34,694 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-15 18:43:34,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:34,694 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2024-09-15 18:43:34,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-09-15 18:43:34,695 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:34,695 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:34,717 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-09-15 18:43:34,896 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:34,897 INFO L399 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:34,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:34,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1311943627, now seen corresponding path program 59 times [2024-09-15 18:43:34,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:34,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277070678] [2024-09-15 18:43:34,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:34,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 18:43:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-15 18:43:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-15 18:43:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 18:43:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-15 18:43:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-15 18:43:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-15 18:43:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-15 18:43:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-15 18:43:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-15 18:43:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-15 18:43:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-15 18:43:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-15 18:43:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-15 18:43:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-15 18:43:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-15 18:43:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-15 18:43:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-15 18:43:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-15 18:43:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-15 18:43:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-15 18:43:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-15 18:43:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-15 18:43:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-15 18:43:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-15 18:43:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-15 18:43:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-15 18:43:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-15 18:43:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-15 18:43:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-15 18:43:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-15 18:43:36,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:36,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277070678] [2024-09-15 18:43:36,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277070678] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:36,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627801748] [2024-09-15 18:43:36,388 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 18:43:36,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:36,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:36,390 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:43:36,391 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-09-15 18:43:36,502 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-09-15 18:43:36,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:43:36,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-15 18:43:36,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:36,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-15 18:43:36,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:37,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-15 18:43:37,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627801748] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:37,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:37,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 66 [2024-09-15 18:43:37,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680808100] [2024-09-15 18:43:37,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:37,738 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-09-15 18:43:37,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:37,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-09-15 18:43:37,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1090, Invalid=3200, Unknown=0, NotChecked=0, Total=4290 [2024-09-15 18:43:37,739 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 32 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-15 18:43:38,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:38,071 INFO L93 Difference]: Finished difference Result 357 states and 389 transitions. [2024-09-15 18:43:38,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-09-15 18:43:38,072 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 32 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 252 [2024-09-15 18:43:38,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:38,074 INFO L225 Difference]: With dead ends: 357 [2024-09-15 18:43:38,077 INFO L226 Difference]: Without dead ends: 256 [2024-09-15 18:43:38,078 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 504 SyntacticMatches, 62 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3087 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1090, Invalid=3200, Unknown=0, NotChecked=0, Total=4290 [2024-09-15 18:43:38,078 INFO L434 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:38,078 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 498 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 18:43:38,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-09-15 18:43:38,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-09-15 18:43:38,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 190 states have (on average 1.0105263157894737) internal successors, (192), 191 states have internal predecessors, (192), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-15 18:43:38,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2024-09-15 18:43:38,111 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 252 [2024-09-15 18:43:38,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:38,111 INFO L474 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2024-09-15 18:43:38,111 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 32 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-15 18:43:38,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:38,115 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2024-09-15 18:43:38,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-09-15 18:43:38,116 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:38,116 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:38,128 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2024-09-15 18:43:38,316 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-09-15 18:43:38,317 INFO L399 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:38,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:38,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1358859177, now seen corresponding path program 60 times [2024-09-15 18:43:38,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:38,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45435262] [2024-09-15 18:43:38,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:38,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-15 18:43:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 18:43:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-15 18:43:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-15 18:43:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-15 18:43:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-15 18:43:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-15 18:43:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-15 18:43:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-15 18:43:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-15 18:43:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-15 18:43:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-15 18:43:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-15 18:43:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-15 18:43:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-15 18:43:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-15 18:43:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-15 18:43:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-15 18:43:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-15 18:43:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-15 18:43:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-15 18:43:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-15 18:43:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-15 18:43:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-15 18:43:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-15 18:43:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-15 18:43:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-15 18:43:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-15 18:43:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-15 18:43:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-15 18:43:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:39,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 525 proven. 1396 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-15 18:43:39,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:39,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45435262] [2024-09-15 18:43:39,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45435262] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:39,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46824935] [2024-09-15 18:43:39,177 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 18:43:39,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:39,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:39,178 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:43:39,179 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-09-15 18:43:39,300 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2024-09-15 18:43:39,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:43:39,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-15 18:43:39,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-15 18:43:39,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:40,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-15 18:43:40,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46824935] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:40,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:40,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 39 [2024-09-15 18:43:40,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950400851] [2024-09-15 18:43:40,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:40,311 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-15 18:43:40,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:40,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-15 18:43:40,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=574, Invalid=908, Unknown=0, NotChecked=0, Total=1482 [2024-09-15 18:43:40,312 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-15 18:43:40,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:40,488 INFO L93 Difference]: Finished difference Result 269 states and 271 transitions. [2024-09-15 18:43:40,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-15 18:43:40,488 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 253 [2024-09-15 18:43:40,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:40,490 INFO L225 Difference]: With dead ends: 269 [2024-09-15 18:43:40,490 INFO L226 Difference]: Without dead ends: 267 [2024-09-15 18:43:40,490 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 534 SyntacticMatches, 62 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=580, Invalid=980, Unknown=0, NotChecked=0, Total=1560 [2024-09-15 18:43:40,490 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:40,490 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 96 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:43:40,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-09-15 18:43:40,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2024-09-15 18:43:40,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 195 states have (on average 1.0102564102564102) internal successors, (197), 196 states have internal predecessors, (197), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-15 18:43:40,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2024-09-15 18:43:40,507 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 253 [2024-09-15 18:43:40,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:40,507 INFO L474 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2024-09-15 18:43:40,507 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-15 18:43:40,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:40,507 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2024-09-15 18:43:40,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-09-15 18:43:40,508 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:40,508 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:40,523 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-09-15 18:43:40,709 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:40,709 INFO L399 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:40,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:40,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1654363027, now seen corresponding path program 61 times [2024-09-15 18:43:40,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:40,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670891724] [2024-09-15 18:43:40,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:40,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-15 18:43:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 18:43:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-15 18:43:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-15 18:43:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-15 18:43:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-15 18:43:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-15 18:43:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-15 18:43:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-15 18:43:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-15 18:43:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-15 18:43:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-15 18:43:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-15 18:43:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-15 18:43:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-15 18:43:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-15 18:43:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-15 18:43:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-15 18:43:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-15 18:43:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-15 18:43:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-15 18:43:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-15 18:43:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-15 18:43:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-15 18:43:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-15 18:43:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-15 18:43:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-15 18:43:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-15 18:43:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-15 18:43:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-15 18:43:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-15 18:43:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-15 18:43:42,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:42,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670891724] [2024-09-15 18:43:42,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670891724] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:42,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161250630] [2024-09-15 18:43:42,198 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-15 18:43:42,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:42,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:42,199 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:43:42,201 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-09-15 18:43:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:42,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-15 18:43:42,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-15 18:43:42,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:43,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-15 18:43:43,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161250630] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:43,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:43,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 68 [2024-09-15 18:43:43,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257706361] [2024-09-15 18:43:43,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:43,627 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-15 18:43:43,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:43,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-15 18:43:43,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1157, Invalid=3399, Unknown=0, NotChecked=0, Total=4556 [2024-09-15 18:43:43,628 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-15 18:43:43,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:43,965 INFO L93 Difference]: Finished difference Result 368 states and 401 transitions. [2024-09-15 18:43:43,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-09-15 18:43:43,966 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 260 [2024-09-15 18:43:43,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:43,968 INFO L225 Difference]: With dead ends: 368 [2024-09-15 18:43:43,968 INFO L226 Difference]: Without dead ends: 264 [2024-09-15 18:43:43,968 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 520 SyntacticMatches, 64 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3283 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1157, Invalid=3399, Unknown=0, NotChecked=0, Total=4556 [2024-09-15 18:43:43,968 INFO L434 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:43,969 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 502 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 18:43:43,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-09-15 18:43:43,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-09-15 18:43:43,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 196 states have (on average 1.010204081632653) internal successors, (198), 197 states have internal predecessors, (198), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-15 18:43:43,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 265 transitions. [2024-09-15 18:43:43,985 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 265 transitions. Word has length 260 [2024-09-15 18:43:43,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:43,985 INFO L474 AbstractCegarLoop]: Abstraction has 264 states and 265 transitions. [2024-09-15 18:43:43,985 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-15 18:43:43,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:43,986 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 265 transitions. [2024-09-15 18:43:43,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-09-15 18:43:43,986 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:43,987 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:44,002 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-09-15 18:43:44,190 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:44,190 INFO L399 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:44,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:44,191 INFO L85 PathProgramCache]: Analyzing trace with hash -598218503, now seen corresponding path program 62 times [2024-09-15 18:43:44,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:44,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236009611] [2024-09-15 18:43:44,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:44,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-15 18:43:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-15 18:43:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-15 18:43:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-15 18:43:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-15 18:43:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-15 18:43:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-15 18:43:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-15 18:43:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-15 18:43:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-15 18:43:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-15 18:43:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-15 18:43:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-15 18:43:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-15 18:43:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-15 18:43:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-15 18:43:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-15 18:43:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-15 18:43:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-15 18:43:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-15 18:43:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-15 18:43:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-15 18:43:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-15 18:43:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-15 18:43:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-15 18:43:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-15 18:43:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-15 18:43:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-15 18:43:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-15 18:43:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-15 18:43:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-15 18:43:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:45,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 558 proven. 1489 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-15 18:43:45,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:45,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236009611] [2024-09-15 18:43:45,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236009611] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:45,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16689337] [2024-09-15 18:43:45,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:43:45,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:45,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:45,136 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:43:45,137 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-09-15 18:43:45,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:43:45,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:43:45,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-09-15 18:43:45,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:45,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-15 18:43:45,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:46,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-15 18:43:46,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16689337] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:46,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:46,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 40 [2024-09-15 18:43:46,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653111187] [2024-09-15 18:43:46,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:46,296 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-15 18:43:46,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:46,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-15 18:43:46,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=608, Invalid=952, Unknown=0, NotChecked=0, Total=1560 [2024-09-15 18:43:46,298 INFO L87 Difference]: Start difference. First operand 264 states and 265 transitions. Second operand has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-15 18:43:46,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:46,476 INFO L93 Difference]: Finished difference Result 277 states and 279 transitions. [2024-09-15 18:43:46,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-15 18:43:46,477 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 261 [2024-09-15 18:43:46,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:46,478 INFO L225 Difference]: With dead ends: 277 [2024-09-15 18:43:46,478 INFO L226 Difference]: Without dead ends: 275 [2024-09-15 18:43:46,478 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 549 SyntacticMatches, 66 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=614, Invalid=1026, Unknown=0, NotChecked=0, Total=1640 [2024-09-15 18:43:46,479 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:46,479 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 90 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:43:46,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-09-15 18:43:46,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2024-09-15 18:43:46,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 201 states have (on average 1.0099502487562189) internal successors, (203), 202 states have internal predecessors, (203), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-15 18:43:46,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2024-09-15 18:43:46,495 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 261 [2024-09-15 18:43:46,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:46,495 INFO L474 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2024-09-15 18:43:46,495 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-15 18:43:46,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:46,495 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2024-09-15 18:43:46,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-09-15 18:43:46,496 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:46,496 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:46,509 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-09-15 18:43:46,697 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-09-15 18:43:46,697 INFO L399 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:46,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:46,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1474175605, now seen corresponding path program 63 times [2024-09-15 18:43:46,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:46,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554231428] [2024-09-15 18:43:46,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:46,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-15 18:43:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-15 18:43:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-15 18:43:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-15 18:43:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-15 18:43:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-15 18:43:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-15 18:43:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-15 18:43:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-15 18:43:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-15 18:43:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-15 18:43:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-15 18:43:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-15 18:43:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-15 18:43:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-15 18:43:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-15 18:43:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-15 18:43:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-15 18:43:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-15 18:43:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-15 18:43:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-15 18:43:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-15 18:43:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-15 18:43:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-15 18:43:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-15 18:43:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-15 18:43:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-15 18:43:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-15 18:43:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-15 18:43:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-15 18:43:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-15 18:43:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-15 18:43:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:48,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-15 18:43:48,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:48,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554231428] [2024-09-15 18:43:48,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554231428] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:48,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101877450] [2024-09-15 18:43:48,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 18:43:48,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:48,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:48,305 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:43:48,307 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-09-15 18:43:48,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2024-09-15 18:43:48,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:43:48,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-15 18:43:48,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-15 18:43:48,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-15 18:43:49,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101877450] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:49,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:49,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 70 [2024-09-15 18:43:49,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263595277] [2024-09-15 18:43:49,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:49,872 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-09-15 18:43:49,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:49,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-09-15 18:43:49,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1226, Invalid=3604, Unknown=0, NotChecked=0, Total=4830 [2024-09-15 18:43:49,873 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 70 states have internal predecessors, (109), 34 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-15 18:43:50,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:50,283 INFO L93 Difference]: Finished difference Result 379 states and 413 transitions. [2024-09-15 18:43:50,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-09-15 18:43:50,284 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 70 states have internal predecessors, (109), 34 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 268 [2024-09-15 18:43:50,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:50,286 INFO L225 Difference]: With dead ends: 379 [2024-09-15 18:43:50,286 INFO L226 Difference]: Without dead ends: 272 [2024-09-15 18:43:50,286 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 536 SyntacticMatches, 66 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1226, Invalid=3604, Unknown=0, NotChecked=0, Total=4830 [2024-09-15 18:43:50,286 INFO L434 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:50,287 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 742 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 18:43:50,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-09-15 18:43:50,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-09-15 18:43:50,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 202 states have (on average 1.00990099009901) internal successors, (204), 203 states have internal predecessors, (204), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-15 18:43:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 273 transitions. [2024-09-15 18:43:50,305 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 273 transitions. Word has length 268 [2024-09-15 18:43:50,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:50,305 INFO L474 AbstractCegarLoop]: Abstraction has 272 states and 273 transitions. [2024-09-15 18:43:50,305 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 70 states have internal predecessors, (109), 34 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-15 18:43:50,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:50,306 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 273 transitions. [2024-09-15 18:43:50,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-09-15 18:43:50,307 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:50,307 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:50,325 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2024-09-15 18:43:50,511 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:50,512 INFO L399 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:50,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:50,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2135297559, now seen corresponding path program 64 times [2024-09-15 18:43:50,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:50,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591595320] [2024-09-15 18:43:50,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:50,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 18:43:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-15 18:43:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 18:43:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-15 18:43:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 18:43:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-15 18:43:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-15 18:43:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-15 18:43:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-15 18:43:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-15 18:43:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-15 18:43:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-15 18:43:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-15 18:43:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-15 18:43:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-15 18:43:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-15 18:43:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-15 18:43:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-15 18:43:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-15 18:43:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-15 18:43:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-15 18:43:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-15 18:43:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-15 18:43:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-15 18:43:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-15 18:43:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-15 18:43:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-15 18:43:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-15 18:43:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-15 18:43:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-15 18:43:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-15 18:43:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-15 18:43:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:51,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 592 proven. 1585 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-15 18:43:51,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:51,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591595320] [2024-09-15 18:43:51,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591595320] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:51,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092901809] [2024-09-15 18:43:51,447 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 18:43:51,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:51,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:51,448 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:43:51,449 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-09-15 18:43:51,537 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 18:43:51,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:43:51,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-15 18:43:51,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:51,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-15 18:43:51,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:52,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-15 18:43:52,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092901809] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:52,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:52,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 41 [2024-09-15 18:43:52,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458730981] [2024-09-15 18:43:52,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:52,634 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-15 18:43:52,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:52,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-15 18:43:52,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=997, Unknown=0, NotChecked=0, Total=1640 [2024-09-15 18:43:52,635 INFO L87 Difference]: Start difference. First operand 272 states and 273 transitions. Second operand has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-15 18:43:52,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:52,821 INFO L93 Difference]: Finished difference Result 285 states and 287 transitions. [2024-09-15 18:43:52,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-15 18:43:52,821 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 269 [2024-09-15 18:43:52,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:52,823 INFO L225 Difference]: With dead ends: 285 [2024-09-15 18:43:52,823 INFO L226 Difference]: Without dead ends: 283 [2024-09-15 18:43:52,823 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 568 SyntacticMatches, 66 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=649, Invalid=1073, Unknown=0, NotChecked=0, Total=1722 [2024-09-15 18:43:52,823 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:52,823 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 112 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:43:52,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-09-15 18:43:52,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2024-09-15 18:43:52,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 207 states have (on average 1.0096618357487923) internal successors, (209), 208 states have internal predecessors, (209), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-15 18:43:52,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2024-09-15 18:43:52,841 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 269 [2024-09-15 18:43:52,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:52,841 INFO L474 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2024-09-15 18:43:52,841 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-15 18:43:52,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:52,841 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2024-09-15 18:43:52,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-09-15 18:43:52,842 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:52,843 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:52,855 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2024-09-15 18:43:53,046 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,66 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:53,047 INFO L399 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:53,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:53,047 INFO L85 PathProgramCache]: Analyzing trace with hash 894655149, now seen corresponding path program 65 times [2024-09-15 18:43:53,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:53,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425437276] [2024-09-15 18:43:53,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:53,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 18:43:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-15 18:43:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 18:43:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-15 18:43:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 18:43:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-15 18:43:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-15 18:43:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-15 18:43:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-15 18:43:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-15 18:43:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-15 18:43:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-15 18:43:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-15 18:43:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-15 18:43:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-15 18:43:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-15 18:43:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-15 18:43:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-15 18:43:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-15 18:43:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-15 18:43:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-15 18:43:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-15 18:43:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-15 18:43:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-15 18:43:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-15 18:43:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-15 18:43:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-15 18:43:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-15 18:43:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-15 18:43:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-15 18:43:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-15 18:43:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-15 18:43:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-15 18:43:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:54,866 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-15 18:43:54,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:54,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425437276] [2024-09-15 18:43:54,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425437276] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:54,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700983113] [2024-09-15 18:43:54,866 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 18:43:54,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:54,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:54,868 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:43:54,869 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-09-15 18:43:54,985 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2024-09-15 18:43:54,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:43:54,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-09-15 18:43:54,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-15 18:43:55,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:56,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-15 18:43:56,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700983113] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:56,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:56,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 72 [2024-09-15 18:43:56,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047149198] [2024-09-15 18:43:56,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:56,398 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-15 18:43:56,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:56,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-15 18:43:56,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1297, Invalid=3815, Unknown=0, NotChecked=0, Total=5112 [2024-09-15 18:43:56,400 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 72 states have internal predecessors, (112), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-15 18:43:56,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:56,716 INFO L93 Difference]: Finished difference Result 390 states and 425 transitions. [2024-09-15 18:43:56,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-09-15 18:43:56,717 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 72 states have internal predecessors, (112), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 276 [2024-09-15 18:43:56,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:56,719 INFO L225 Difference]: With dead ends: 390 [2024-09-15 18:43:56,720 INFO L226 Difference]: Without dead ends: 280 [2024-09-15 18:43:56,721 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 552 SyntacticMatches, 68 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3693 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1297, Invalid=3815, Unknown=0, NotChecked=0, Total=5112 [2024-09-15 18:43:56,721 INFO L434 NwaCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:56,721 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 614 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:43:56,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-09-15 18:43:56,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2024-09-15 18:43:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 208 states have (on average 1.0096153846153846) internal successors, (210), 209 states have internal predecessors, (210), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-15 18:43:56,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2024-09-15 18:43:56,738 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 276 [2024-09-15 18:43:56,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:56,738 INFO L474 AbstractCegarLoop]: Abstraction has 280 states and 281 transitions. [2024-09-15 18:43:56,738 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 72 states have internal predecessors, (112), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-15 18:43:56,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:56,739 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 281 transitions. [2024-09-15 18:43:56,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-09-15 18:43:56,740 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:56,740 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:56,753 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2024-09-15 18:43:56,943 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-09-15 18:43:56,944 INFO L399 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:56,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:56,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1833681095, now seen corresponding path program 66 times [2024-09-15 18:43:56,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:56,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249799772] [2024-09-15 18:43:56,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:56,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:43:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-15 18:43:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-15 18:43:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-15 18:43:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-15 18:43:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-15 18:43:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-15 18:43:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-15 18:43:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-15 18:43:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-15 18:43:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-15 18:43:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-15 18:43:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-15 18:43:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-15 18:43:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-15 18:43:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-15 18:43:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-15 18:43:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-15 18:43:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-15 18:43:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-15 18:43:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-15 18:43:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-15 18:43:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-15 18:43:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-15 18:43:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-15 18:43:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-15 18:43:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-15 18:43:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-15 18:43:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-15 18:43:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-15 18:43:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-15 18:43:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-15 18:43:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-15 18:43:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-15 18:43:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:43:57,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 627 proven. 1684 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-15 18:43:57,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:43:57,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249799772] [2024-09-15 18:43:57,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249799772] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:43:57,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809138469] [2024-09-15 18:43:57,846 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 18:43:57,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:43:57,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:43:57,848 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:43:57,852 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-09-15 18:43:57,995 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2024-09-15 18:43:57,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:43:58,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-15 18:43:58,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:43:58,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-15 18:43:58,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:43:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-15 18:43:59,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809138469] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:43:59,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:43:59,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 42 [2024-09-15 18:43:59,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124522083] [2024-09-15 18:43:59,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:43:59,123 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-15 18:43:59,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:43:59,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-15 18:43:59,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=1043, Unknown=0, NotChecked=0, Total=1722 [2024-09-15 18:43:59,123 INFO L87 Difference]: Start difference. First operand 280 states and 281 transitions. Second operand has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-15 18:43:59,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:43:59,289 INFO L93 Difference]: Finished difference Result 293 states and 295 transitions. [2024-09-15 18:43:59,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-15 18:43:59,290 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 277 [2024-09-15 18:43:59,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:43:59,291 INFO L225 Difference]: With dead ends: 293 [2024-09-15 18:43:59,291 INFO L226 Difference]: Without dead ends: 291 [2024-09-15 18:43:59,292 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 585 SyntacticMatches, 68 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1558 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=685, Invalid=1121, Unknown=0, NotChecked=0, Total=1806 [2024-09-15 18:43:59,292 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:43:59,292 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 127 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:43:59,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-09-15 18:43:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2024-09-15 18:43:59,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 213 states have (on average 1.0093896713615023) internal successors, (215), 214 states have internal predecessors, (215), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-15 18:43:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2024-09-15 18:43:59,308 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 277 [2024-09-15 18:43:59,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:43:59,309 INFO L474 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2024-09-15 18:43:59,309 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-15 18:43:59,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:59,309 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2024-09-15 18:43:59,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-09-15 18:43:59,310 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:43:59,310 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:43:59,323 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2024-09-15 18:43:59,514 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-09-15 18:43:59,515 INFO L399 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:43:59,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:43:59,515 INFO L85 PathProgramCache]: Analyzing trace with hash -274464949, now seen corresponding path program 67 times [2024-09-15 18:43:59,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:43:59,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845483829] [2024-09-15 18:43:59,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:43:59,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:43:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:44:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-15 18:44:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-15 18:44:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-15 18:44:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-15 18:44:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-15 18:44:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-15 18:44:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-15 18:44:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-15 18:44:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-15 18:44:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-15 18:44:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-15 18:44:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-15 18:44:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-15 18:44:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-15 18:44:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-15 18:44:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-15 18:44:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-15 18:44:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-15 18:44:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-15 18:44:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-15 18:44:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-15 18:44:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-15 18:44:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-15 18:44:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-15 18:44:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-15 18:44:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-15 18:44:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-15 18:44:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-15 18:44:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-15 18:44:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-15 18:44:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-15 18:44:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-15 18:44:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-15 18:44:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-15 18:44:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-15 18:44:01,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:44:01,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845483829] [2024-09-15 18:44:01,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845483829] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:44:01,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518809666] [2024-09-15 18:44:01,252 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-15 18:44:01,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:01,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:44:01,253 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:44:01,254 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-09-15 18:44:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:01,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-15 18:44:01,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:44:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-15 18:44:01,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:44:02,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-15 18:44:02,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518809666] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:44:02,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:44:02,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73, 73] total 74 [2024-09-15 18:44:02,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428232102] [2024-09-15 18:44:02,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:44:02,859 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-15 18:44:02,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:44:02,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-15 18:44:02,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1370, Invalid=4032, Unknown=0, NotChecked=0, Total=5402 [2024-09-15 18:44:02,861 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 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) [2024-09-15 18:44:03,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:44:03,242 INFO L93 Difference]: Finished difference Result 401 states and 437 transitions. [2024-09-15 18:44:03,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-09-15 18:44:03,243 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 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 284 [2024-09-15 18:44:03,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:44:03,245 INFO L225 Difference]: With dead ends: 401 [2024-09-15 18:44:03,245 INFO L226 Difference]: Without dead ends: 288 [2024-09-15 18:44:03,246 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 568 SyntacticMatches, 70 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3907 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1370, Invalid=4032, Unknown=0, NotChecked=0, Total=5402 [2024-09-15 18:44:03,246 INFO L434 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 18:44:03,246 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 663 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 18:44:03,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-09-15 18:44:03,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-09-15 18:44:03,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 214 states have (on average 1.0093457943925233) internal successors, (216), 215 states have internal predecessors, (216), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-15 18:44:03,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 289 transitions. [2024-09-15 18:44:03,265 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 289 transitions. Word has length 284 [2024-09-15 18:44:03,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:44:03,265 INFO L474 AbstractCegarLoop]: Abstraction has 288 states and 289 transitions. [2024-09-15 18:44:03,265 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 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) [2024-09-15 18:44:03,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:03,266 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 289 transitions. [2024-09-15 18:44:03,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-09-15 18:44:03,267 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:44:03,267 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:44:03,281 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-09-15 18:44:03,467 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-09-15 18:44:03,467 INFO L399 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:44:03,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:03,468 INFO L85 PathProgramCache]: Analyzing trace with hash -179464233, now seen corresponding path program 68 times [2024-09-15 18:44:03,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:44:03,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671599319] [2024-09-15 18:44:03,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:44:03,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:44:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:44:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-15 18:44:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-15 18:44:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-15 18:44:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 18:44:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-15 18:44:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-15 18:44:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-15 18:44:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-15 18:44:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-15 18:44:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-15 18:44:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-15 18:44:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-15 18:44:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-15 18:44:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-15 18:44:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-15 18:44:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-15 18:44:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-15 18:44:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-15 18:44:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-15 18:44:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-15 18:44:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-15 18:44:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-15 18:44:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-15 18:44:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-15 18:44:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-15 18:44:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-15 18:44:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-15 18:44:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-15 18:44:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-15 18:44:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-15 18:44:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-15 18:44:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-15 18:44:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-15 18:44:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-15 18:44:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:04,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 663 proven. 1786 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-15 18:44:04,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:44:04,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671599319] [2024-09-15 18:44:04,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671599319] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:44:04,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195424301] [2024-09-15 18:44:04,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:44:04,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:04,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:44:04,437 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:44:04,438 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-09-15 18:44:04,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:44:04,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:44:04,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-09-15 18:44:04,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:44:04,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-15 18:44:04,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:44:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-15 18:44:05,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195424301] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:44:05,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:44:05,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 43 [2024-09-15 18:44:05,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335998053] [2024-09-15 18:44:05,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:44:05,536 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-15 18:44:05,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:44:05,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-15 18:44:05,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=716, Invalid=1090, Unknown=0, NotChecked=0, Total=1806 [2024-09-15 18:44:05,537 INFO L87 Difference]: Start difference. First operand 288 states and 289 transitions. Second operand has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-15 18:44:05,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:44:05,698 INFO L93 Difference]: Finished difference Result 301 states and 303 transitions. [2024-09-15 18:44:05,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-15 18:44:05,698 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 285 [2024-09-15 18:44:05,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:44:05,700 INFO L225 Difference]: With dead ends: 301 [2024-09-15 18:44:05,700 INFO L226 Difference]: Without dead ends: 299 [2024-09-15 18:44:05,701 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 600 SyntacticMatches, 72 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=722, Invalid=1170, Unknown=0, NotChecked=0, Total=1892 [2024-09-15 18:44:05,701 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:44:05,701 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 107 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:44:05,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-09-15 18:44:05,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 295. [2024-09-15 18:44:05,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 219 states have (on average 1.0091324200913243) internal successors, (221), 220 states have internal predecessors, (221), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-15 18:44:05,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2024-09-15 18:44:05,720 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 285 [2024-09-15 18:44:05,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:44:05,720 INFO L474 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2024-09-15 18:44:05,720 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-15 18:44:05,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:05,720 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2024-09-15 18:44:05,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-09-15 18:44:05,721 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:44:05,721 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:44:05,735 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2024-09-15 18:44:05,925 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:05,926 INFO L399 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:44:05,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:05,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1554949907, now seen corresponding path program 69 times [2024-09-15 18:44:05,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:44:05,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102817386] [2024-09-15 18:44:05,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:44:05,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:44:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:44:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-15 18:44:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-15 18:44:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-15 18:44:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 18:44:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-15 18:44:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-15 18:44:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-15 18:44:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-15 18:44:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-15 18:44:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-15 18:44:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-15 18:44:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-15 18:44:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-15 18:44:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-15 18:44:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-15 18:44:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-15 18:44:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-15 18:44:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-15 18:44:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-15 18:44:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-15 18:44:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-15 18:44:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-15 18:44:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-15 18:44:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-15 18:44:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-15 18:44:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-15 18:44:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-15 18:44:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-15 18:44:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-15 18:44:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-15 18:44:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-15 18:44:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-15 18:44:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-15 18:44:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-15 18:44:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-15 18:44:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-15 18:44:07,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:44:07,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102817386] [2024-09-15 18:44:07,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102817386] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:44:07,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960920042] [2024-09-15 18:44:07,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 18:44:07,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:07,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:44:07,769 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:44:07,771 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-09-15 18:44:07,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2024-09-15 18:44:07,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:44:07,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-15 18:44:07,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:44:08,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-15 18:44:08,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:44:09,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-15 18:44:09,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960920042] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:44:09,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:44:09,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 76 [2024-09-15 18:44:09,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51581335] [2024-09-15 18:44:09,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:44:09,558 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-09-15 18:44:09,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:44:09,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-09-15 18:44:09,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1445, Invalid=4255, Unknown=0, NotChecked=0, Total=5700 [2024-09-15 18:44:09,560 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-15 18:44:10,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:44:10,011 INFO L93 Difference]: Finished difference Result 412 states and 449 transitions. [2024-09-15 18:44:10,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-09-15 18:44:10,011 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 292 [2024-09-15 18:44:10,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:44:10,013 INFO L225 Difference]: With dead ends: 412 [2024-09-15 18:44:10,013 INFO L226 Difference]: Without dead ends: 296 [2024-09-15 18:44:10,014 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 584 SyntacticMatches, 72 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4127 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1445, Invalid=4255, Unknown=0, NotChecked=0, Total=5700 [2024-09-15 18:44:10,014 INFO L434 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 18:44:10,015 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 602 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 18:44:10,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-09-15 18:44:10,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2024-09-15 18:44:10,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 220 states have (on average 1.009090909090909) internal successors, (222), 221 states have internal predecessors, (222), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-15 18:44:10,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 297 transitions. [2024-09-15 18:44:10,034 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 297 transitions. Word has length 292 [2024-09-15 18:44:10,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:44:10,035 INFO L474 AbstractCegarLoop]: Abstraction has 296 states and 297 transitions. [2024-09-15 18:44:10,035 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-15 18:44:10,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:10,035 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 297 transitions. [2024-09-15 18:44:10,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-09-15 18:44:10,036 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:44:10,036 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:44:10,050 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2024-09-15 18:44:10,237 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:10,238 INFO L399 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:44:10,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:10,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1487952519, now seen corresponding path program 70 times [2024-09-15 18:44:10,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:44:10,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806100397] [2024-09-15 18:44:10,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:44:10,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:44:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:44:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-15 18:44:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 18:44:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-15 18:44:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-15 18:44:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-15 18:44:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-15 18:44:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-15 18:44:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-15 18:44:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-15 18:44:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-15 18:44:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-15 18:44:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-15 18:44:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-15 18:44:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-15 18:44:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-15 18:44:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-15 18:44:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-15 18:44:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-15 18:44:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-15 18:44:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-15 18:44:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-15 18:44:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-15 18:44:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-15 18:44:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-15 18:44:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-15 18:44:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-15 18:44:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-15 18:44:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-15 18:44:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-15 18:44:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-15 18:44:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-15 18:44:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-15 18:44:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-15 18:44:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-15 18:44:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-15 18:44:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 700 proven. 1891 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-15 18:44:11,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:44:11,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806100397] [2024-09-15 18:44:11,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806100397] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:44:11,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023872337] [2024-09-15 18:44:11,585 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 18:44:11,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:11,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:44:11,586 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:44:11,587 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-09-15 18:44:11,682 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 18:44:11,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:44:11,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-15 18:44:11,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:44:11,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-15 18:44:11,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:44:12,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-15 18:44:12,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023872337] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:44:12,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:44:12,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 44 [2024-09-15 18:44:12,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406451378] [2024-09-15 18:44:12,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:44:12,954 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-15 18:44:12,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:44:12,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-15 18:44:12,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=1138, Unknown=0, NotChecked=0, Total=1892 [2024-09-15 18:44:12,955 INFO L87 Difference]: Start difference. First operand 296 states and 297 transitions. Second operand has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-15 18:44:13,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:44:13,199 INFO L93 Difference]: Finished difference Result 309 states and 311 transitions. [2024-09-15 18:44:13,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-15 18:44:13,200 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 293 [2024-09-15 18:44:13,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:44:13,202 INFO L225 Difference]: With dead ends: 309 [2024-09-15 18:44:13,202 INFO L226 Difference]: Without dead ends: 307 [2024-09-15 18:44:13,202 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 619 SyntacticMatches, 72 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=760, Invalid=1220, Unknown=0, NotChecked=0, Total=1980 [2024-09-15 18:44:13,202 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:44:13,202 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 111 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:44:13,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-09-15 18:44:13,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 303. [2024-09-15 18:44:13,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 225 states have (on average 1.008888888888889) internal successors, (227), 226 states have internal predecessors, (227), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-15 18:44:13,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2024-09-15 18:44:13,221 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 293 [2024-09-15 18:44:13,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:44:13,222 INFO L474 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2024-09-15 18:44:13,222 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-15 18:44:13,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:13,222 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2024-09-15 18:44:13,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-09-15 18:44:13,223 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:44:13,223 INFO L216 NwaCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:44:13,238 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2024-09-15 18:44:13,423 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:13,424 INFO L399 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:44:13,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:13,424 INFO L85 PathProgramCache]: Analyzing trace with hash 919933195, now seen corresponding path program 71 times [2024-09-15 18:44:13,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:44:13,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952651641] [2024-09-15 18:44:13,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:44:13,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:44:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:44:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-15 18:44:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 18:44:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-15 18:44:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-15 18:44:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-15 18:44:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-15 18:44:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-15 18:44:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-15 18:44:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-15 18:44:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-15 18:44:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-15 18:44:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-15 18:44:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-15 18:44:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-15 18:44:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-15 18:44:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-15 18:44:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-15 18:44:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-15 18:44:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-15 18:44:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-15 18:44:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-15 18:44:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-15 18:44:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-15 18:44:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-15 18:44:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-15 18:44:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-15 18:44:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-15 18:44:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-15 18:44:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-15 18:44:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-15 18:44:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-15 18:44:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-15 18:44:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-15 18:44:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-15 18:44:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-15 18:44:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-15 18:44:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-15 18:44:15,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:44:15,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952651641] [2024-09-15 18:44:15,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952651641] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:44:15,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321473158] [2024-09-15 18:44:15,419 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 18:44:15,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:15,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:44:15,421 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:44:15,426 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-09-15 18:44:15,567 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-09-15 18:44:15,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:44:15,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-09-15 18:44:15,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:44:15,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-15 18:44:15,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:44:17,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-15 18:44:17,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321473158] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:44:17,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:44:17,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77, 77] total 78 [2024-09-15 18:44:17,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868873089] [2024-09-15 18:44:17,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:44:17,273 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-09-15 18:44:17,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:44:17,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-09-15 18:44:17,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1522, Invalid=4484, Unknown=0, NotChecked=0, Total=6006 [2024-09-15 18:44:17,275 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 38 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-15 18:44:17,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:44:17,692 INFO L93 Difference]: Finished difference Result 423 states and 461 transitions. [2024-09-15 18:44:17,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-09-15 18:44:17,693 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 38 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 300 [2024-09-15 18:44:17,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:44:17,694 INFO L225 Difference]: With dead ends: 423 [2024-09-15 18:44:17,695 INFO L226 Difference]: Without dead ends: 304 [2024-09-15 18:44:17,695 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 600 SyntacticMatches, 74 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4353 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1522, Invalid=4484, Unknown=0, NotChecked=0, Total=6006 [2024-09-15 18:44:17,695 INFO L434 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 18:44:17,695 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 617 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 18:44:17,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-09-15 18:44:17,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2024-09-15 18:44:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 226 states have (on average 1.008849557522124) internal successors, (228), 227 states have internal predecessors, (228), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-15 18:44:17,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 305 transitions. [2024-09-15 18:44:17,715 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 305 transitions. Word has length 300 [2024-09-15 18:44:17,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:44:17,715 INFO L474 AbstractCegarLoop]: Abstraction has 304 states and 305 transitions. [2024-09-15 18:44:17,715 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 38 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-15 18:44:17,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:17,716 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 305 transitions. [2024-09-15 18:44:17,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-09-15 18:44:17,716 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:44:17,717 INFO L216 NwaCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:44:17,730 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2024-09-15 18:44:17,920 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,73 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:17,921 INFO L399 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:44:17,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:17,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1019997801, now seen corresponding path program 72 times [2024-09-15 18:44:17,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:44:17,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324815789] [2024-09-15 18:44:17,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:44:17,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:44:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:44:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-15 18:44:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-15 18:44:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 18:44:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-15 18:44:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-15 18:44:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-15 18:44:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-15 18:44:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-15 18:44:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-15 18:44:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-15 18:44:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-15 18:44:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-15 18:44:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-15 18:44:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-15 18:44:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-15 18:44:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-15 18:44:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-15 18:44:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-15 18:44:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-15 18:44:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-15 18:44:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-15 18:44:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-15 18:44:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-15 18:44:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-15 18:44:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-15 18:44:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-15 18:44:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-15 18:44:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-15 18:44:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-15 18:44:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-15 18:44:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-15 18:44:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-15 18:44:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-15 18:44:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-15 18:44:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-15 18:44:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-15 18:44:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:19,101 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 738 proven. 1999 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-15 18:44:19,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:44:19,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324815789] [2024-09-15 18:44:19,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324815789] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:44:19,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452490847] [2024-09-15 18:44:19,102 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 18:44:19,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:19,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:44:19,103 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:44:19,105 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-09-15 18:44:19,232 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2024-09-15 18:44:19,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:44:19,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-15 18:44:19,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:44:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-15 18:44:19,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:44:20,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-15 18:44:20,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452490847] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:44:20,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:44:20,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 45 [2024-09-15 18:44:20,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297745913] [2024-09-15 18:44:20,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:44:20,458 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-15 18:44:20,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:44:20,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-15 18:44:20,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=793, Invalid=1187, Unknown=0, NotChecked=0, Total=1980 [2024-09-15 18:44:20,459 INFO L87 Difference]: Start difference. First operand 304 states and 305 transitions. Second operand has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 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) [2024-09-15 18:44:20,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:44:20,684 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2024-09-15 18:44:20,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-15 18:44:20,684 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 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 301 [2024-09-15 18:44:20,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:44:20,686 INFO L225 Difference]: With dead ends: 317 [2024-09-15 18:44:20,687 INFO L226 Difference]: Without dead ends: 315 [2024-09-15 18:44:20,687 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 636 SyntacticMatches, 74 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1807 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=799, Invalid=1271, Unknown=0, NotChecked=0, Total=2070 [2024-09-15 18:44:20,687 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:44:20,687 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 130 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:44:20,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-09-15 18:44:20,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2024-09-15 18:44:20,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 231 states have (on average 1.0086580086580086) internal successors, (233), 232 states have internal predecessors, (233), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-15 18:44:20,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2024-09-15 18:44:20,709 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 301 [2024-09-15 18:44:20,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:44:20,710 INFO L474 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2024-09-15 18:44:20,710 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 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) [2024-09-15 18:44:20,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:20,710 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2024-09-15 18:44:20,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-09-15 18:44:20,711 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:44:20,711 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:44:20,725 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2024-09-15 18:44:20,912 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:20,912 INFO L399 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:44:20,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:20,912 INFO L85 PathProgramCache]: Analyzing trace with hash -574462163, now seen corresponding path program 73 times [2024-09-15 18:44:20,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:44:20,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369956069] [2024-09-15 18:44:20,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:44:20,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:44:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:44:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-15 18:44:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-15 18:44:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 18:44:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-15 18:44:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-15 18:44:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-15 18:44:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-15 18:44:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-15 18:44:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-15 18:44:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-15 18:44:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-15 18:44:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-15 18:44:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-15 18:44:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-15 18:44:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-15 18:44:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-15 18:44:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-15 18:44:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-15 18:44:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-15 18:44:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-15 18:44:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-15 18:44:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-15 18:44:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-15 18:44:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-15 18:44:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-15 18:44:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-15 18:44:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-15 18:44:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-15 18:44:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-15 18:44:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-15 18:44:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-15 18:44:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-15 18:44:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-15 18:44:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-15 18:44:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-15 18:44:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-15 18:44:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-15 18:44:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:22,978 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-15 18:44:22,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:44:22,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369956069] [2024-09-15 18:44:22,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369956069] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:44:22,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175991929] [2024-09-15 18:44:22,979 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-15 18:44:22,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:22,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:44:22,980 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:44:22,981 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-09-15 18:44:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:23,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-15 18:44:23,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:44:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-15 18:44:23,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:44:24,826 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-15 18:44:24,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175991929] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:44:24,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:44:24,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79, 79] total 80 [2024-09-15 18:44:24,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192582663] [2024-09-15 18:44:24,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:44:24,827 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-09-15 18:44:24,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:44:24,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-09-15 18:44:24,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1601, Invalid=4719, Unknown=0, NotChecked=0, Total=6320 [2024-09-15 18:44:24,828 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand has 80 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-15 18:44:25,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:44:25,300 INFO L93 Difference]: Finished difference Result 434 states and 473 transitions. [2024-09-15 18:44:25,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-09-15 18:44:25,301 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 308 [2024-09-15 18:44:25,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:44:25,303 INFO L225 Difference]: With dead ends: 434 [2024-09-15 18:44:25,307 INFO L226 Difference]: Without dead ends: 312 [2024-09-15 18:44:25,308 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 616 SyntacticMatches, 76 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4585 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1601, Invalid=4719, Unknown=0, NotChecked=0, Total=6320 [2024-09-15 18:44:25,308 INFO L434 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 18:44:25,309 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 642 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 18:44:25,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-09-15 18:44:25,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2024-09-15 18:44:25,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 232 states have (on average 1.0086206896551724) internal successors, (234), 233 states have internal predecessors, (234), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-15 18:44:25,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 313 transitions. [2024-09-15 18:44:25,352 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 313 transitions. Word has length 308 [2024-09-15 18:44:25,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:44:25,355 INFO L474 AbstractCegarLoop]: Abstraction has 312 states and 313 transitions. [2024-09-15 18:44:25,355 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-15 18:44:25,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:25,356 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 313 transitions. [2024-09-15 18:44:25,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-09-15 18:44:25,357 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:44:25,357 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:44:25,371 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2024-09-15 18:44:25,557 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:25,557 INFO L399 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:44:25,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:25,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1332864071, now seen corresponding path program 74 times [2024-09-15 18:44:25,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:44:25,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376341623] [2024-09-15 18:44:25,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:44:25,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:44:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:44:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 18:44:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-15 18:44:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-15 18:44:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-15 18:44:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-15 18:44:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-15 18:44:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-15 18:44:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-15 18:44:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-15 18:44:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-15 18:44:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-15 18:44:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-15 18:44:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-15 18:44:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-15 18:44:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-15 18:44:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-15 18:44:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-15 18:44:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-15 18:44:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-15 18:44:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-15 18:44:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-15 18:44:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-15 18:44:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-15 18:44:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-15 18:44:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-15 18:44:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-15 18:44:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-15 18:44:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-15 18:44:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-15 18:44:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-15 18:44:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-15 18:44:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-15 18:44:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-15 18:44:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-15 18:44:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-15 18:44:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-15 18:44:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-15 18:44:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 777 proven. 2110 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-15 18:44:26,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:44:26,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376341623] [2024-09-15 18:44:26,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376341623] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:44:26,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872086337] [2024-09-15 18:44:26,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:44:26,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:26,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:44:26,931 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:44:26,932 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-09-15 18:44:27,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:44:27,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:44:27,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-09-15 18:44:27,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:44:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-15 18:44:27,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:44:28,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-15 18:44:28,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872086337] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:44:28,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:44:28,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 46 [2024-09-15 18:44:28,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640446529] [2024-09-15 18:44:28,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:44:28,452 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-15 18:44:28,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:44:28,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-15 18:44:28,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=833, Invalid=1237, Unknown=0, NotChecked=0, Total=2070 [2024-09-15 18:44:28,457 INFO L87 Difference]: Start difference. First operand 312 states and 313 transitions. Second operand has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-15 18:44:28,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:44:28,678 INFO L93 Difference]: Finished difference Result 325 states and 327 transitions. [2024-09-15 18:44:28,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-15 18:44:28,678 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 309 [2024-09-15 18:44:28,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:44:28,680 INFO L225 Difference]: With dead ends: 325 [2024-09-15 18:44:28,680 INFO L226 Difference]: Without dead ends: 323 [2024-09-15 18:44:28,681 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 651 SyntacticMatches, 78 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1972 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=839, Invalid=1323, Unknown=0, NotChecked=0, Total=2162 [2024-09-15 18:44:28,682 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:44:28,683 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 103 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:44:28,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-09-15 18:44:28,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2024-09-15 18:44:28,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 238 states have internal predecessors, (239), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-15 18:44:28,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2024-09-15 18:44:28,704 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 309 [2024-09-15 18:44:28,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:44:28,704 INFO L474 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2024-09-15 18:44:28,705 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-15 18:44:28,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:28,705 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2024-09-15 18:44:28,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-09-15 18:44:28,713 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:44:28,713 INFO L216 NwaCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:44:28,741 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2024-09-15 18:44:28,913 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,76 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:28,914 INFO L399 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:44:28,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:28,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1362029877, now seen corresponding path program 75 times [2024-09-15 18:44:28,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:44:28,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121611437] [2024-09-15 18:44:28,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:44:28,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:44:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:44:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 18:44:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-15 18:44:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-15 18:44:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-15 18:44:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-15 18:44:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-15 18:44:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-15 18:44:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-15 18:44:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-15 18:44:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-15 18:44:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-15 18:44:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-15 18:44:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-15 18:44:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-15 18:44:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-15 18:44:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-15 18:44:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-15 18:44:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-15 18:44:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-15 18:44:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-15 18:44:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-15 18:44:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-15 18:44:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-15 18:44:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-15 18:44:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-15 18:44:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-15 18:44:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-15 18:44:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-15 18:44:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-15 18:44:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-15 18:44:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-15 18:44:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-15 18:44:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-15 18:44:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-15 18:44:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-15 18:44:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-15 18:44:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-15 18:44:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-15 18:44:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:31,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-15 18:44:31,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:44:31,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121611437] [2024-09-15 18:44:31,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121611437] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:44:31,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553382020] [2024-09-15 18:44:31,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 18:44:31,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:31,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:44:31,080 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:44:31,081 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-09-15 18:44:31,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-09-15 18:44:31,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:44:31,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-15 18:44:31,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:44:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-15 18:44:31,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:44:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-15 18:44:33,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553382020] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:44:33,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:44:33,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81, 81] total 82 [2024-09-15 18:44:33,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17729840] [2024-09-15 18:44:33,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:44:33,060 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-09-15 18:44:33,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:44:33,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-09-15 18:44:33,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1682, Invalid=4960, Unknown=0, NotChecked=0, Total=6642 [2024-09-15 18:44:33,061 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 82 states have internal predecessors, (127), 40 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-15 18:44:33,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:44:33,471 INFO L93 Difference]: Finished difference Result 445 states and 485 transitions. [2024-09-15 18:44:33,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-09-15 18:44:33,471 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 82 states have internal predecessors, (127), 40 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 316 [2024-09-15 18:44:33,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:44:33,473 INFO L225 Difference]: With dead ends: 445 [2024-09-15 18:44:33,473 INFO L226 Difference]: Without dead ends: 320 [2024-09-15 18:44:33,474 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 632 SyntacticMatches, 78 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4823 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1682, Invalid=4960, Unknown=0, NotChecked=0, Total=6642 [2024-09-15 18:44:33,474 INFO L434 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 18:44:33,475 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 563 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 18:44:33,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-09-15 18:44:33,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-09-15 18:44:33,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 238 states have (on average 1.0084033613445378) internal successors, (240), 239 states have internal predecessors, (240), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-15 18:44:33,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 321 transitions. [2024-09-15 18:44:33,498 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 321 transitions. Word has length 316 [2024-09-15 18:44:33,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:44:33,498 INFO L474 AbstractCegarLoop]: Abstraction has 320 states and 321 transitions. [2024-09-15 18:44:33,498 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 82 states have internal predecessors, (127), 40 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-15 18:44:33,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:33,498 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 321 transitions. [2024-09-15 18:44:33,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-09-15 18:44:33,499 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:44:33,500 INFO L216 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:44:33,512 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-09-15 18:44:33,703 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2024-09-15 18:44:33,703 INFO L399 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:44:33,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:33,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1172997289, now seen corresponding path program 76 times [2024-09-15 18:44:33,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:44:33,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939765952] [2024-09-15 18:44:33,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:44:33,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:44:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:34,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:44:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:34,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-15 18:44:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:34,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-15 18:44:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:34,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-15 18:44:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:34,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-15 18:44:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:34,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-15 18:44:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:34,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-15 18:44:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:34,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-15 18:44:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:34,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-15 18:44:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:34,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-15 18:44:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:34,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-15 18:44:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:34,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-15 18:44:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:34,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-15 18:44:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:34,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-15 18:44:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:34,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-15 18:44:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-15 18:44:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-15 18:44:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-15 18:44:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-15 18:44:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-15 18:44:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-15 18:44:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-15 18:44:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-15 18:44:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-15 18:44:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-15 18:44:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-15 18:44:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-15 18:44:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-15 18:44:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-15 18:44:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-15 18:44:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-15 18:44:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-15 18:44:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-15 18:44:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-15 18:44:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-15 18:44:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-15 18:44:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-15 18:44:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-15 18:44:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-15 18:44:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:35,022 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 817 proven. 2224 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-15 18:44:35,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:44:35,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939765952] [2024-09-15 18:44:35,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939765952] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:44:35,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852940565] [2024-09-15 18:44:35,022 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 18:44:35,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:35,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:44:35,023 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:44:35,024 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-09-15 18:44:35,127 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 18:44:35,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:44:35,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-15 18:44:35,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:44:35,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-15 18:44:35,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:44:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-15 18:44:36,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852940565] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:44:36,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:44:36,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 47 [2024-09-15 18:44:36,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336143123] [2024-09-15 18:44:36,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:44:36,531 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-15 18:44:36,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:44:36,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-15 18:44:36,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=874, Invalid=1288, Unknown=0, NotChecked=0, Total=2162 [2024-09-15 18:44:36,532 INFO L87 Difference]: Start difference. First operand 320 states and 321 transitions. Second operand has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 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) [2024-09-15 18:44:36,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:44:36,761 INFO L93 Difference]: Finished difference Result 333 states and 335 transitions. [2024-09-15 18:44:36,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-15 18:44:36,761 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 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 317 [2024-09-15 18:44:36,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:44:36,763 INFO L225 Difference]: With dead ends: 333 [2024-09-15 18:44:36,764 INFO L226 Difference]: Without dead ends: 331 [2024-09-15 18:44:36,764 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 670 SyntacticMatches, 78 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=880, Invalid=1376, Unknown=0, NotChecked=0, Total=2256 [2024-09-15 18:44:36,764 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:44:36,764 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 101 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:44:36,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-09-15 18:44:36,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 327. [2024-09-15 18:44:36,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 243 states have (on average 1.008230452674897) internal successors, (245), 244 states have internal predecessors, (245), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-15 18:44:36,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2024-09-15 18:44:36,790 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 317 [2024-09-15 18:44:36,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:44:36,791 INFO L474 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2024-09-15 18:44:36,791 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 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) [2024-09-15 18:44:36,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:36,791 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2024-09-15 18:44:36,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-09-15 18:44:36,793 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:44:36,793 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:44:36,808 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2024-09-15 18:44:36,993 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-09-15 18:44:36,993 INFO L399 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:44:36,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:36,994 INFO L85 PathProgramCache]: Analyzing trace with hash -603290259, now seen corresponding path program 77 times [2024-09-15 18:44:36,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:44:36,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807649226] [2024-09-15 18:44:36,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:44:36,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:44:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:44:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-15 18:44:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-15 18:44:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-15 18:44:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-15 18:44:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-15 18:44:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-15 18:44:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-15 18:44:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-15 18:44:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-15 18:44:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-15 18:44:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-15 18:44:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-15 18:44:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-15 18:44:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-15 18:44:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-15 18:44:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-15 18:44:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-15 18:44:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-15 18:44:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-15 18:44:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-15 18:44:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-15 18:44:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-15 18:44:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-15 18:44:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-15 18:44:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-15 18:44:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-15 18:44:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-15 18:44:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-15 18:44:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-15 18:44:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-15 18:44:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-15 18:44:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-15 18:44:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-15 18:44:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-15 18:44:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-15 18:44:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-15 18:44:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-15 18:44:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-15 18:44:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-15 18:44:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:39,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-15 18:44:39,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:44:39,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807649226] [2024-09-15 18:44:39,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807649226] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:44:39,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064707397] [2024-09-15 18:44:39,269 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 18:44:39,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:39,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:44:39,274 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:44:39,282 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-09-15 18:44:39,441 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2024-09-15 18:44:39,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:44:39,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-09-15 18:44:39,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:44:39,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-15 18:44:39,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:44:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-15 18:44:41,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064707397] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:44:41,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:44:41,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 84 [2024-09-15 18:44:41,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788258831] [2024-09-15 18:44:41,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:44:41,365 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-09-15 18:44:41,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:44:41,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-09-15 18:44:41,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1765, Invalid=5207, Unknown=0, NotChecked=0, Total=6972 [2024-09-15 18:44:41,366 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 84 states have internal predecessors, (130), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-15 18:44:41,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:44:41,776 INFO L93 Difference]: Finished difference Result 456 states and 497 transitions. [2024-09-15 18:44:41,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-09-15 18:44:41,776 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 84 states have internal predecessors, (130), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 324 [2024-09-15 18:44:41,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:44:41,778 INFO L225 Difference]: With dead ends: 456 [2024-09-15 18:44:41,778 INFO L226 Difference]: Without dead ends: 328 [2024-09-15 18:44:41,779 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 648 SyntacticMatches, 80 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5067 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1765, Invalid=5207, Unknown=0, NotChecked=0, Total=6972 [2024-09-15 18:44:41,779 INFO L434 NwaCegarLoop]: 87 mSDtfsCounter, 0 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 18:44:41,779 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 576 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 18:44:41,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-09-15 18:44:41,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2024-09-15 18:44:41,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 244 states have (on average 1.0081967213114753) internal successors, (246), 245 states have internal predecessors, (246), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-15 18:44:41,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 329 transitions. [2024-09-15 18:44:41,801 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 329 transitions. Word has length 324 [2024-09-15 18:44:41,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:44:41,802 INFO L474 AbstractCegarLoop]: Abstraction has 328 states and 329 transitions. [2024-09-15 18:44:41,802 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 84 states have internal predecessors, (130), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-15 18:44:41,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:41,802 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 329 transitions. [2024-09-15 18:44:41,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-09-15 18:44:41,803 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:44:41,803 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:44:41,816 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2024-09-15 18:44:42,003 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:42,003 INFO L399 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:44:42,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:42,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1171497465, now seen corresponding path program 78 times [2024-09-15 18:44:42,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:44:42,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556807463] [2024-09-15 18:44:42,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:44:42,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:44:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:44:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-15 18:44:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 18:44:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-15 18:44:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 18:44:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-15 18:44:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-15 18:44:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-15 18:44:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-15 18:44:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-15 18:44:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-15 18:44:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-15 18:44:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-15 18:44:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-15 18:44:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-15 18:44:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-15 18:44:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-15 18:44:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-15 18:44:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-15 18:44:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-15 18:44:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-15 18:44:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-15 18:44:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-15 18:44:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-15 18:44:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-15 18:44:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-15 18:44:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-15 18:44:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-15 18:44:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-15 18:44:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-15 18:44:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-15 18:44:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-15 18:44:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-15 18:44:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-15 18:44:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-15 18:44:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-15 18:44:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-15 18:44:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-15 18:44:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-15 18:44:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-15 18:44:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 858 proven. 2341 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-15 18:44:43,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:44:43,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556807463] [2024-09-15 18:44:43,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556807463] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:44:43,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923725838] [2024-09-15 18:44:43,378 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 18:44:43,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:43,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:44:43,380 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:44:43,382 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-09-15 18:44:43,524 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2024-09-15 18:44:43,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:44:43,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-15 18:44:43,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:44:43,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-15 18:44:43,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:44:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-15 18:44:45,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923725838] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:44:45,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:44:45,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 48 [2024-09-15 18:44:45,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698997807] [2024-09-15 18:44:45,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:44:45,045 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-15 18:44:45,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:44:45,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-15 18:44:45,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=916, Invalid=1340, Unknown=0, NotChecked=0, Total=2256 [2024-09-15 18:44:45,046 INFO L87 Difference]: Start difference. First operand 328 states and 329 transitions. Second operand has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-15 18:44:45,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:44:45,274 INFO L93 Difference]: Finished difference Result 341 states and 343 transitions. [2024-09-15 18:44:45,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-15 18:44:45,275 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 325 [2024-09-15 18:44:45,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:44:45,277 INFO L225 Difference]: With dead ends: 341 [2024-09-15 18:44:45,277 INFO L226 Difference]: Without dead ends: 339 [2024-09-15 18:44:45,278 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 687 SyntacticMatches, 80 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2074 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=922, Invalid=1430, Unknown=0, NotChecked=0, Total=2352 [2024-09-15 18:44:45,278 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:44:45,278 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:44:45,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-09-15 18:44:45,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2024-09-15 18:44:45,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 249 states have (on average 1.0080321285140563) internal successors, (251), 250 states have internal predecessors, (251), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-15 18:44:45,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2024-09-15 18:44:45,313 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 325 [2024-09-15 18:44:45,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:44:45,313 INFO L474 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2024-09-15 18:44:45,313 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-15 18:44:45,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:45,314 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2024-09-15 18:44:45,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-09-15 18:44:45,315 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:44:45,315 INFO L216 NwaCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:44:45,328 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2024-09-15 18:44:45,515 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:45,515 INFO L399 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:44:45,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:45,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1739850891, now seen corresponding path program 79 times [2024-09-15 18:44:45,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:44:45,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641170359] [2024-09-15 18:44:45,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:44:45,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:44:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:44:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-15 18:44:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 18:44:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-15 18:44:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 18:44:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-15 18:44:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-15 18:44:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-15 18:44:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-15 18:44:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-15 18:44:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-15 18:44:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-15 18:44:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-15 18:44:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-15 18:44:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-15 18:44:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-15 18:44:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-15 18:44:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-15 18:44:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-15 18:44:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-15 18:44:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-15 18:44:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-15 18:44:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-15 18:44:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-15 18:44:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-15 18:44:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-15 18:44:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-15 18:44:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-15 18:44:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-15 18:44:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-15 18:44:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-15 18:44:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-15 18:44:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-15 18:44:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-15 18:44:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-15 18:44:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-15 18:44:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-15 18:44:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-15 18:44:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-15 18:44:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-15 18:44:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-15 18:44:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:47,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-15 18:44:47,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:44:47,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641170359] [2024-09-15 18:44:47,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641170359] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:44:47,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819209695] [2024-09-15 18:44:47,935 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-15 18:44:47,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:47,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:44:47,937 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:44:47,938 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-09-15 18:44:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:48,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-15 18:44:48,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:44:48,205 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-15 18:44:48,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:44:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-15 18:44:49,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819209695] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:44:49,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:44:49,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 86 [2024-09-15 18:44:49,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871960222] [2024-09-15 18:44:49,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:44:49,879 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-15 18:44:49,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:44:49,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-15 18:44:49,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1850, Invalid=5460, Unknown=0, NotChecked=0, Total=7310 [2024-09-15 18:44:49,881 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 86 states have internal predecessors, (133), 42 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-15 18:44:50,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:44:50,494 INFO L93 Difference]: Finished difference Result 467 states and 509 transitions. [2024-09-15 18:44:50,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-09-15 18:44:50,495 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 86 states have internal predecessors, (133), 42 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 332 [2024-09-15 18:44:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:44:50,497 INFO L225 Difference]: With dead ends: 467 [2024-09-15 18:44:50,497 INFO L226 Difference]: Without dead ends: 336 [2024-09-15 18:44:50,498 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 664 SyntacticMatches, 82 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5317 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1850, Invalid=5460, Unknown=0, NotChecked=0, Total=7310 [2024-09-15 18:44:50,498 INFO L434 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-15 18:44:50,498 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 638 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-15 18:44:50,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-09-15 18:44:50,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2024-09-15 18:44:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 250 states have (on average 1.008) internal successors, (252), 251 states have internal predecessors, (252), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-15 18:44:50,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2024-09-15 18:44:50,521 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 332 [2024-09-15 18:44:50,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:44:50,521 INFO L474 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2024-09-15 18:44:50,521 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 86 states have internal predecessors, (133), 42 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-15 18:44:50,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:50,521 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2024-09-15 18:44:50,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-09-15 18:44:50,522 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:44:50,523 INFO L216 NwaCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:44:50,537 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2024-09-15 18:44:50,726 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:50,726 INFO L399 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:44:50,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:50,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1978804969, now seen corresponding path program 80 times [2024-09-15 18:44:50,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:44:50,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143914889] [2024-09-15 18:44:50,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:44:50,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:44:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:44:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-15 18:44:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-15 18:44:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-15 18:44:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-15 18:44:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-15 18:44:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-15 18:44:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-15 18:44:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-15 18:44:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-15 18:44:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-15 18:44:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-15 18:44:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-15 18:44:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-15 18:44:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-15 18:44:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-15 18:44:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-15 18:44:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-15 18:44:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-15 18:44:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-15 18:44:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-15 18:44:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-15 18:44:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-15 18:44:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-15 18:44:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-15 18:44:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-15 18:44:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-15 18:44:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-15 18:44:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-15 18:44:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-15 18:44:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-15 18:44:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-15 18:44:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-15 18:44:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-15 18:44:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-15 18:44:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-15 18:44:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-15 18:44:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-15 18:44:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-15 18:44:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-15 18:44:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-15 18:44:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 900 proven. 2461 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-15 18:44:52,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:44:52,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143914889] [2024-09-15 18:44:52,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143914889] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:44:52,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289398006] [2024-09-15 18:44:52,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:44:52,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:52,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:44:52,128 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:44:52,131 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-09-15 18:44:52,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:44:52,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:44:52,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-09-15 18:44:52,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:44:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-15 18:44:52,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:44:53,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-15 18:44:53,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289398006] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:44:53,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:44:53,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 49 [2024-09-15 18:44:53,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105944305] [2024-09-15 18:44:53,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:44:53,760 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-15 18:44:53,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:44:53,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-15 18:44:53,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=959, Invalid=1393, Unknown=0, NotChecked=0, Total=2352 [2024-09-15 18:44:53,761 INFO L87 Difference]: Start difference. First operand 336 states and 337 transitions. Second operand has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-15 18:44:54,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:44:54,008 INFO L93 Difference]: Finished difference Result 349 states and 351 transitions. [2024-09-15 18:44:54,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-15 18:44:54,009 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 333 [2024-09-15 18:44:54,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:44:54,011 INFO L225 Difference]: With dead ends: 349 [2024-09-15 18:44:54,011 INFO L226 Difference]: Without dead ends: 347 [2024-09-15 18:44:54,011 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 702 SyntacticMatches, 84 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2251 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=965, Invalid=1485, Unknown=0, NotChecked=0, Total=2450 [2024-09-15 18:44:54,012 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:44:54,012 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 130 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:44:54,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-09-15 18:44:54,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 343. [2024-09-15 18:44:54,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 255 states have (on average 1.007843137254902) internal successors, (257), 256 states have internal predecessors, (257), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-15 18:44:54,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2024-09-15 18:44:54,035 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 333 [2024-09-15 18:44:54,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:44:54,036 INFO L474 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2024-09-15 18:44:54,036 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-15 18:44:54,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:54,036 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2024-09-15 18:44:54,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-09-15 18:44:54,037 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:44:54,037 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:44:54,051 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2024-09-15 18:44:54,238 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2024-09-15 18:44:54,238 INFO L399 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:44:54,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:54,238 INFO L85 PathProgramCache]: Analyzing trace with hash -695356499, now seen corresponding path program 81 times [2024-09-15 18:44:54,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:44:54,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815543526] [2024-09-15 18:44:54,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:44:54,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:44:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:44:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-15 18:44:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-15 18:44:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-15 18:44:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-15 18:44:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-15 18:44:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-15 18:44:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-15 18:44:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-15 18:44:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-15 18:44:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-15 18:44:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-15 18:44:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-15 18:44:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-15 18:44:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-15 18:44:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-15 18:44:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-15 18:44:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-15 18:44:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-15 18:44:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-15 18:44:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-15 18:44:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-15 18:44:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-15 18:44:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-15 18:44:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-15 18:44:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-15 18:44:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-15 18:44:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-15 18:44:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-15 18:44:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-15 18:44:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-15 18:44:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-15 18:44:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-15 18:44:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-15 18:44:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-15 18:44:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-15 18:44:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-15 18:44:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-15 18:44:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-15 18:44:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-15 18:44:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-15 18:44:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-15 18:44:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:44:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-15 18:44:56,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:44:56,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815543526] [2024-09-15 18:44:56,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815543526] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:44:56,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042376710] [2024-09-15 18:44:56,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 18:44:56,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:56,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:44:56,578 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:44:56,583 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-09-15 18:44:56,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2024-09-15 18:44:56,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:44:56,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-15 18:44:56,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:44:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-15 18:44:56,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:44:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-15 18:44:58,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042376710] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:44:58,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:44:58,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87, 87] total 88 [2024-09-15 18:44:58,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096225492] [2024-09-15 18:44:58,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:44:58,446 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-09-15 18:44:58,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:44:58,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-09-15 18:44:58,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1937, Invalid=5719, Unknown=0, NotChecked=0, Total=7656 [2024-09-15 18:44:58,447 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 88 states have internal predecessors, (136), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-15 18:44:58,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:44:58,856 INFO L93 Difference]: Finished difference Result 478 states and 521 transitions. [2024-09-15 18:44:58,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-09-15 18:44:58,856 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 88 states have internal predecessors, (136), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 340 [2024-09-15 18:44:58,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:44:58,858 INFO L225 Difference]: With dead ends: 478 [2024-09-15 18:44:58,858 INFO L226 Difference]: Without dead ends: 344 [2024-09-15 18:44:58,859 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 680 SyntacticMatches, 84 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5573 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1937, Invalid=5719, Unknown=0, NotChecked=0, Total=7656 [2024-09-15 18:44:58,859 INFO L434 NwaCegarLoop]: 91 mSDtfsCounter, 0 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 18:44:58,859 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 702 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 18:44:58,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-09-15 18:44:58,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-09-15 18:44:58,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 256 states have (on average 1.0078125) internal successors, (258), 257 states have internal predecessors, (258), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-15 18:44:58,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 345 transitions. [2024-09-15 18:44:58,883 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 345 transitions. Word has length 340 [2024-09-15 18:44:58,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:44:58,883 INFO L474 AbstractCegarLoop]: Abstraction has 344 states and 345 transitions. [2024-09-15 18:44:58,883 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 88 states have internal predecessors, (136), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-15 18:44:58,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:58,884 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 345 transitions. [2024-09-15 18:44:58,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-09-15 18:44:58,885 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:44:58,885 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:44:58,898 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2024-09-15 18:44:59,088 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,83 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:44:59,089 INFO L399 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:44:59,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:44:59,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1065629753, now seen corresponding path program 82 times [2024-09-15 18:44:59,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:44:59,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111633704] [2024-09-15 18:44:59,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:44:59,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:44:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:45:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-15 18:45:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-15 18:45:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 18:45:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-15 18:45:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-15 18:45:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-15 18:45:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-15 18:45:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-15 18:45:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-15 18:45:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-15 18:45:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-15 18:45:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-15 18:45:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-15 18:45:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-15 18:45:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-15 18:45:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-15 18:45:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-15 18:45:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-15 18:45:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-15 18:45:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-15 18:45:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-15 18:45:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-15 18:45:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-15 18:45:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-15 18:45:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-15 18:45:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-15 18:45:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-15 18:45:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-15 18:45:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-15 18:45:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-15 18:45:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-15 18:45:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-15 18:45:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-15 18:45:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-15 18:45:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-15 18:45:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-15 18:45:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-15 18:45:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-15 18:45:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-15 18:45:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-15 18:45:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-15 18:45:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:00,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 943 proven. 2584 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-15 18:45:00,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:45:00,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111633704] [2024-09-15 18:45:00,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111633704] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:45:00,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796844855] [2024-09-15 18:45:00,551 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 18:45:00,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:00,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:45:00,553 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:45:00,554 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2024-09-15 18:45:00,659 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 18:45:00,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:45:00,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-15 18:45:00,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:45:00,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-15 18:45:00,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:45:02,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-15 18:45:02,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796844855] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:45:02,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:45:02,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 50 [2024-09-15 18:45:02,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909641925] [2024-09-15 18:45:02,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:45:02,351 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-15 18:45:02,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:45:02,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-15 18:45:02,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1003, Invalid=1447, Unknown=0, NotChecked=0, Total=2450 [2024-09-15 18:45:02,351 INFO L87 Difference]: Start difference. First operand 344 states and 345 transitions. Second operand has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-15 18:45:02,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:45:02,590 INFO L93 Difference]: Finished difference Result 357 states and 359 transitions. [2024-09-15 18:45:02,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-15 18:45:02,590 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 341 [2024-09-15 18:45:02,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:45:02,592 INFO L225 Difference]: With dead ends: 357 [2024-09-15 18:45:02,592 INFO L226 Difference]: Without dead ends: 355 [2024-09-15 18:45:02,593 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 721 SyntacticMatches, 84 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2262 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1009, Invalid=1541, Unknown=0, NotChecked=0, Total=2550 [2024-09-15 18:45:02,593 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:45:02,593 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 121 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:45:02,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-09-15 18:45:02,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2024-09-15 18:45:02,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 261 states have (on average 1.0076628352490422) internal successors, (263), 262 states have internal predecessors, (263), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-15 18:45:02,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2024-09-15 18:45:02,617 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 341 [2024-09-15 18:45:02,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:45:02,617 INFO L474 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2024-09-15 18:45:02,617 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-15 18:45:02,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:02,618 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2024-09-15 18:45:02,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-09-15 18:45:02,619 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:45:02,619 INFO L216 NwaCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:45:02,633 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2024-09-15 18:45:02,822 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:02,823 INFO L399 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:45:02,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:02,823 INFO L85 PathProgramCache]: Analyzing trace with hash 278521419, now seen corresponding path program 83 times [2024-09-15 18:45:02,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:45:02,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635545237] [2024-09-15 18:45:02,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:45:02,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:45:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:45:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-15 18:45:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-15 18:45:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 18:45:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-15 18:45:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-15 18:45:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-15 18:45:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-15 18:45:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-15 18:45:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-15 18:45:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-15 18:45:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-15 18:45:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-15 18:45:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-15 18:45:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-15 18:45:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-15 18:45:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-15 18:45:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-15 18:45:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-15 18:45:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-15 18:45:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-15 18:45:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-15 18:45:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-15 18:45:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-15 18:45:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-15 18:45:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-15 18:45:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-15 18:45:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-15 18:45:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-15 18:45:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-15 18:45:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-15 18:45:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-15 18:45:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-15 18:45:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-15 18:45:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-15 18:45:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-15 18:45:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-15 18:45:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-15 18:45:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-15 18:45:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-15 18:45:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-15 18:45:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-15 18:45:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-15 18:45:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:05,398 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-15 18:45:05,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:45:05,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635545237] [2024-09-15 18:45:05,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635545237] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:45:05,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560854715] [2024-09-15 18:45:05,398 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 18:45:05,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:05,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:45:05,400 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:45:05,401 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2024-09-15 18:45:05,547 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2024-09-15 18:45:05,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:45:05,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-15 18:45:05,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:45:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-15 18:45:05,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:45:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-15 18:45:07,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560854715] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:45:07,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:45:07,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89, 89] total 90 [2024-09-15 18:45:07,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475783339] [2024-09-15 18:45:07,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:45:07,553 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-09-15 18:45:07,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:45:07,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-09-15 18:45:07,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2026, Invalid=5984, Unknown=0, NotChecked=0, Total=8010 [2024-09-15 18:45:07,555 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 90 states have internal predecessors, (139), 44 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-15 18:45:08,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:45:08,062 INFO L93 Difference]: Finished difference Result 489 states and 533 transitions. [2024-09-15 18:45:08,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-09-15 18:45:08,062 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 90 states have internal predecessors, (139), 44 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 348 [2024-09-15 18:45:08,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:45:08,064 INFO L225 Difference]: With dead ends: 489 [2024-09-15 18:45:08,064 INFO L226 Difference]: Without dead ends: 352 [2024-09-15 18:45:08,065 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 696 SyntacticMatches, 86 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5835 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2026, Invalid=5984, Unknown=0, NotChecked=0, Total=8010 [2024-09-15 18:45:08,065 INFO L434 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-15 18:45:08,066 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 707 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-15 18:45:08,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-09-15 18:45:08,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2024-09-15 18:45:08,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 262 states have (on average 1.0076335877862594) internal successors, (264), 263 states have internal predecessors, (264), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-15 18:45:08,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 353 transitions. [2024-09-15 18:45:08,091 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 353 transitions. Word has length 348 [2024-09-15 18:45:08,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:45:08,091 INFO L474 AbstractCegarLoop]: Abstraction has 352 states and 353 transitions. [2024-09-15 18:45:08,091 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 90 states have internal predecessors, (139), 44 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-15 18:45:08,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:08,092 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 353 transitions. [2024-09-15 18:45:08,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-09-15 18:45:08,093 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:45:08,093 INFO L216 NwaCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:45:08,112 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2024-09-15 18:45:08,297 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:08,297 INFO L399 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:45:08,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:08,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2110185769, now seen corresponding path program 84 times [2024-09-15 18:45:08,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:45:08,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802146181] [2024-09-15 18:45:08,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:45:08,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:45:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:45:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 18:45:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-15 18:45:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-15 18:45:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-15 18:45:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-15 18:45:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-15 18:45:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-15 18:45:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-15 18:45:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-15 18:45:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-15 18:45:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-15 18:45:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-15 18:45:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-15 18:45:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-15 18:45:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-15 18:45:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-15 18:45:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-15 18:45:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-15 18:45:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-15 18:45:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-15 18:45:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-15 18:45:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-15 18:45:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-15 18:45:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-15 18:45:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-15 18:45:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-15 18:45:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-15 18:45:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-15 18:45:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-15 18:45:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-15 18:45:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-15 18:45:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-15 18:45:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-15 18:45:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-15 18:45:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-15 18:45:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-15 18:45:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-15 18:45:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-15 18:45:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-15 18:45:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-15 18:45:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-15 18:45:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-15 18:45:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:09,827 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 987 proven. 2710 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-15 18:45:09,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:45:09,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802146181] [2024-09-15 18:45:09,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802146181] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:45:09,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592471447] [2024-09-15 18:45:09,828 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 18:45:09,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:09,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:45:09,829 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:45:09,831 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2024-09-15 18:45:09,991 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2024-09-15 18:45:09,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:45:09,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-15 18:45:09,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:45:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-15 18:45:10,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:45:11,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-15 18:45:11,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592471447] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:45:11,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:45:11,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 51 [2024-09-15 18:45:11,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039290089] [2024-09-15 18:45:11,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:45:11,641 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-15 18:45:11,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:45:11,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-15 18:45:11,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1048, Invalid=1502, Unknown=0, NotChecked=0, Total=2550 [2024-09-15 18:45:11,642 INFO L87 Difference]: Start difference. First operand 352 states and 353 transitions. Second operand has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-15 18:45:11,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:45:11,897 INFO L93 Difference]: Finished difference Result 365 states and 367 transitions. [2024-09-15 18:45:11,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-15 18:45:11,897 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 349 [2024-09-15 18:45:11,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:45:11,899 INFO L225 Difference]: With dead ends: 365 [2024-09-15 18:45:11,899 INFO L226 Difference]: Without dead ends: 363 [2024-09-15 18:45:11,899 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 738 SyntacticMatches, 86 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2359 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1054, Invalid=1598, Unknown=0, NotChecked=0, Total=2652 [2024-09-15 18:45:11,900 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:45:11,900 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 132 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:45:11,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-09-15 18:45:11,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2024-09-15 18:45:11,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 267 states have (on average 1.0074906367041199) internal successors, (269), 268 states have internal predecessors, (269), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-15 18:45:11,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2024-09-15 18:45:11,925 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 349 [2024-09-15 18:45:11,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:45:11,925 INFO L474 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2024-09-15 18:45:11,925 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-15 18:45:11,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:11,926 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2024-09-15 18:45:11,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-09-15 18:45:11,927 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:45:11,927 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:45:11,940 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2024-09-15 18:45:12,130 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:12,130 INFO L399 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:45:12,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:12,131 INFO L85 PathProgramCache]: Analyzing trace with hash -2035289619, now seen corresponding path program 85 times [2024-09-15 18:45:12,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:45:12,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941279811] [2024-09-15 18:45:12,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:45:12,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:45:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:45:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 18:45:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-15 18:45:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-15 18:45:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-15 18:45:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-15 18:45:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-15 18:45:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-15 18:45:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-15 18:45:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-15 18:45:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-15 18:45:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-15 18:45:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-15 18:45:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-15 18:45:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-15 18:45:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-15 18:45:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-15 18:45:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-15 18:45:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-15 18:45:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-15 18:45:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-15 18:45:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-15 18:45:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-15 18:45:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-15 18:45:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-15 18:45:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-15 18:45:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-15 18:45:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-15 18:45:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-15 18:45:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-15 18:45:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-15 18:45:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-15 18:45:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-15 18:45:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-15 18:45:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-15 18:45:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-15 18:45:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-15 18:45:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-15 18:45:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-15 18:45:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-15 18:45:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-15 18:45:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-15 18:45:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-15 18:45:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-15 18:45:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-15 18:45:14,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:45:14,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941279811] [2024-09-15 18:45:14,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941279811] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:45:14,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41194917] [2024-09-15 18:45:14,915 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-15 18:45:14,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:14,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:45:14,917 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:45:14,918 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2024-09-15 18:45:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:15,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-15 18:45:15,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:45:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-15 18:45:15,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:45:17,274 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-15 18:45:17,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41194917] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:45:17,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:45:17,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91, 91] total 92 [2024-09-15 18:45:17,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415970408] [2024-09-15 18:45:17,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:45:17,275 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-09-15 18:45:17,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:45:17,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-09-15 18:45:17,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2117, Invalid=6255, Unknown=0, NotChecked=0, Total=8372 [2024-09-15 18:45:17,276 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 92 states have internal predecessors, (142), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-15 18:45:17,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:45:17,772 INFO L93 Difference]: Finished difference Result 500 states and 545 transitions. [2024-09-15 18:45:17,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-09-15 18:45:17,772 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 92 states have internal predecessors, (142), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 356 [2024-09-15 18:45:17,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:45:17,774 INFO L225 Difference]: With dead ends: 500 [2024-09-15 18:45:17,774 INFO L226 Difference]: Without dead ends: 360 [2024-09-15 18:45:17,775 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 712 SyntacticMatches, 88 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6103 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2117, Invalid=6255, Unknown=0, NotChecked=0, Total=8372 [2024-09-15 18:45:17,779 INFO L434 NwaCegarLoop]: 95 mSDtfsCounter, 0 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 18:45:17,779 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 962 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 18:45:17,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-09-15 18:45:17,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2024-09-15 18:45:17,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 268 states have (on average 1.007462686567164) internal successors, (270), 269 states have internal predecessors, (270), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-15 18:45:17,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 361 transitions. [2024-09-15 18:45:17,827 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 361 transitions. Word has length 356 [2024-09-15 18:45:17,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:45:17,827 INFO L474 AbstractCegarLoop]: Abstraction has 360 states and 361 transitions. [2024-09-15 18:45:17,828 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 92 states have internal predecessors, (142), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-15 18:45:17,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:17,828 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 361 transitions. [2024-09-15 18:45:17,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-09-15 18:45:17,829 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:45:17,829 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:45:17,843 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2024-09-15 18:45:18,033 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2024-09-15 18:45:18,034 INFO L399 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:45:18,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:18,035 INFO L85 PathProgramCache]: Analyzing trace with hash -150741383, now seen corresponding path program 86 times [2024-09-15 18:45:18,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:45:18,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696090942] [2024-09-15 18:45:18,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:45:18,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:45:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:45:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-15 18:45:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 18:45:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-15 18:45:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-15 18:45:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-15 18:45:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-15 18:45:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-15 18:45:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-15 18:45:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-15 18:45:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-15 18:45:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-15 18:45:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-15 18:45:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-15 18:45:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-15 18:45:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-15 18:45:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-15 18:45:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-15 18:45:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-15 18:45:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-15 18:45:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-15 18:45:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-15 18:45:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-15 18:45:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-15 18:45:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-15 18:45:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-15 18:45:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-15 18:45:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-15 18:45:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-15 18:45:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-15 18:45:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-15 18:45:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-15 18:45:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-15 18:45:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-15 18:45:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-15 18:45:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-15 18:45:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-15 18:45:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-09-15 18:45:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-15 18:45:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-09-15 18:45:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-15 18:45:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-09-15 18:45:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-15 18:45:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-09-15 18:45:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:19,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1032 proven. 2839 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-15 18:45:19,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:45:19,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696090942] [2024-09-15 18:45:19,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696090942] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:45:19,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968664540] [2024-09-15 18:45:19,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:45:19,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:19,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:45:19,487 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:45:19,491 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2024-09-15 18:45:19,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:45:19,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:45:19,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-09-15 18:45:19,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:45:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-15 18:45:19,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:45:21,322 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-15 18:45:21,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968664540] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:45:21,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:45:21,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 52 [2024-09-15 18:45:21,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900349132] [2024-09-15 18:45:21,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:45:21,323 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-15 18:45:21,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:45:21,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-15 18:45:21,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1094, Invalid=1558, Unknown=0, NotChecked=0, Total=2652 [2024-09-15 18:45:21,325 INFO L87 Difference]: Start difference. First operand 360 states and 361 transitions. Second operand has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-15 18:45:21,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:45:21,590 INFO L93 Difference]: Finished difference Result 373 states and 375 transitions. [2024-09-15 18:45:21,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-09-15 18:45:21,590 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 357 [2024-09-15 18:45:21,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:45:21,592 INFO L225 Difference]: With dead ends: 373 [2024-09-15 18:45:21,596 INFO L226 Difference]: Without dead ends: 371 [2024-09-15 18:45:21,596 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 753 SyntacticMatches, 90 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2548 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1100, Invalid=1656, Unknown=0, NotChecked=0, Total=2756 [2024-09-15 18:45:21,597 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:45:21,597 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 102 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:45:21,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-09-15 18:45:21,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367. [2024-09-15 18:45:21,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 273 states have (on average 1.0073260073260073) internal successors, (275), 274 states have internal predecessors, (275), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-15 18:45:21,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2024-09-15 18:45:21,632 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 357 [2024-09-15 18:45:21,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:45:21,633 INFO L474 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2024-09-15 18:45:21,633 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-15 18:45:21,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:21,633 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2024-09-15 18:45:21,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-09-15 18:45:21,634 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:45:21,634 INFO L216 NwaCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:45:21,648 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2024-09-15 18:45:21,838 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2024-09-15 18:45:21,838 INFO L399 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:45:21,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:21,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1214334965, now seen corresponding path program 87 times [2024-09-15 18:45:21,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:45:21,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681062032] [2024-09-15 18:45:21,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:45:21,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:45:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:45:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-15 18:45:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 18:45:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-15 18:45:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-15 18:45:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-15 18:45:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-15 18:45:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-15 18:45:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-15 18:45:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-15 18:45:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-15 18:45:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-15 18:45:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-15 18:45:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-15 18:45:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-15 18:45:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-15 18:45:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-15 18:45:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-15 18:45:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-15 18:45:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-15 18:45:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-15 18:45:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-15 18:45:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-15 18:45:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-15 18:45:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-15 18:45:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-15 18:45:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-15 18:45:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-15 18:45:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-15 18:45:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-15 18:45:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-15 18:45:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-15 18:45:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-15 18:45:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-15 18:45:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-15 18:45:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-15 18:45:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-15 18:45:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-09-15 18:45:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-15 18:45:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-09-15 18:45:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-15 18:45:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-09-15 18:45:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-15 18:45:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-09-15 18:45:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-15 18:45:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:24,683 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-15 18:45:24,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:45:24,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681062032] [2024-09-15 18:45:24,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681062032] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:45:24,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227455535] [2024-09-15 18:45:24,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 18:45:24,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:24,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:45:24,684 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:45:24,685 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2024-09-15 18:45:24,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2024-09-15 18:45:24,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:45:24,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-15 18:45:24,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:45:25,002 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-15 18:45:25,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:45:27,154 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-15 18:45:27,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227455535] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:45:27,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:45:27,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93, 93] total 94 [2024-09-15 18:45:27,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587761813] [2024-09-15 18:45:27,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:45:27,155 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-09-15 18:45:27,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:45:27,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-09-15 18:45:27,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2210, Invalid=6532, Unknown=0, NotChecked=0, Total=8742 [2024-09-15 18:45:27,157 INFO L87 Difference]: Start difference. First operand 367 states and 368 transitions. Second operand has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 94 states have internal predecessors, (145), 46 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-15 18:45:27,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:45:27,649 INFO L93 Difference]: Finished difference Result 511 states and 557 transitions. [2024-09-15 18:45:27,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-09-15 18:45:27,650 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 94 states have internal predecessors, (145), 46 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 364 [2024-09-15 18:45:27,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:45:27,652 INFO L225 Difference]: With dead ends: 511 [2024-09-15 18:45:27,652 INFO L226 Difference]: Without dead ends: 368 [2024-09-15 18:45:27,653 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 728 SyntacticMatches, 90 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6377 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2210, Invalid=6532, Unknown=0, NotChecked=0, Total=8742 [2024-09-15 18:45:27,653 INFO L434 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 18:45:27,654 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 598 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 18:45:27,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-09-15 18:45:27,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2024-09-15 18:45:27,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 274 states have (on average 1.0072992700729928) internal successors, (276), 275 states have internal predecessors, (276), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-15 18:45:27,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 369 transitions. [2024-09-15 18:45:27,703 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 369 transitions. Word has length 364 [2024-09-15 18:45:27,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:45:27,703 INFO L474 AbstractCegarLoop]: Abstraction has 368 states and 369 transitions. [2024-09-15 18:45:27,704 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 94 states have internal predecessors, (145), 46 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-15 18:45:27,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:27,704 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 369 transitions. [2024-09-15 18:45:27,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-09-15 18:45:27,705 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:45:27,705 INFO L216 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:45:27,719 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2024-09-15 18:45:27,909 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,89 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:27,910 INFO L399 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:45:27,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:27,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1353930903, now seen corresponding path program 88 times [2024-09-15 18:45:27,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:45:27,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655645018] [2024-09-15 18:45:27,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:45:27,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:45:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:45:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-15 18:45:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-15 18:45:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-15 18:45:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-15 18:45:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-15 18:45:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-15 18:45:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-15 18:45:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-15 18:45:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-15 18:45:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-15 18:45:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-15 18:45:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-15 18:45:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-15 18:45:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-15 18:45:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-15 18:45:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-15 18:45:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-15 18:45:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-15 18:45:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-15 18:45:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-15 18:45:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-15 18:45:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-15 18:45:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-15 18:45:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-15 18:45:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-15 18:45:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-15 18:45:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-15 18:45:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-15 18:45:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-15 18:45:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-15 18:45:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-15 18:45:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-15 18:45:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-15 18:45:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-15 18:45:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-15 18:45:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-15 18:45:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-15 18:45:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-09-15 18:45:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-15 18:45:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-09-15 18:45:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-15 18:45:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-09-15 18:45:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-15 18:45:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-09-15 18:45:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:29,604 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1078 proven. 2971 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-15 18:45:29,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:45:29,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655645018] [2024-09-15 18:45:29,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655645018] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:45:29,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157180066] [2024-09-15 18:45:29,605 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 18:45:29,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:29,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:45:29,611 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:45:29,613 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2024-09-15 18:45:29,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 18:45:29,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:45:29,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-15 18:45:29,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:45:29,918 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-15 18:45:29,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:45:31,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-15 18:45:31,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157180066] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:45:31,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:45:31,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 53 [2024-09-15 18:45:31,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348155364] [2024-09-15 18:45:31,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:45:31,372 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-15 18:45:31,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:45:31,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-15 18:45:31,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1141, Invalid=1615, Unknown=0, NotChecked=0, Total=2756 [2024-09-15 18:45:31,373 INFO L87 Difference]: Start difference. First operand 368 states and 369 transitions. Second operand has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 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) [2024-09-15 18:45:31,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:45:31,620 INFO L93 Difference]: Finished difference Result 381 states and 383 transitions. [2024-09-15 18:45:31,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-15 18:45:31,620 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 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 365 [2024-09-15 18:45:31,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:45:31,623 INFO L225 Difference]: With dead ends: 381 [2024-09-15 18:45:31,623 INFO L226 Difference]: Without dead ends: 379 [2024-09-15 18:45:31,623 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 772 SyntacticMatches, 90 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2559 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1147, Invalid=1715, Unknown=0, NotChecked=0, Total=2862 [2024-09-15 18:45:31,623 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:45:31,623 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 120 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:45:31,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-09-15 18:45:31,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 375. [2024-09-15 18:45:31,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 279 states have (on average 1.007168458781362) internal successors, (281), 280 states have internal predecessors, (281), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-15 18:45:31,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 376 transitions. [2024-09-15 18:45:31,650 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 376 transitions. Word has length 365 [2024-09-15 18:45:31,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:45:31,650 INFO L474 AbstractCegarLoop]: Abstraction has 375 states and 376 transitions. [2024-09-15 18:45:31,650 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 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) [2024-09-15 18:45:31,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:31,650 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 376 transitions. [2024-09-15 18:45:31,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-09-15 18:45:31,651 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:45:31,652 INFO L216 NwaCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:45:31,665 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2024-09-15 18:45:31,855 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:31,856 INFO L399 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:45:31,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:31,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1725251629, now seen corresponding path program 89 times [2024-09-15 18:45:31,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:45:31,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165468430] [2024-09-15 18:45:31,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:45:31,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:45:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:45:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-15 18:45:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-15 18:45:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-15 18:45:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-15 18:45:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-15 18:45:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-15 18:45:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-15 18:45:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-15 18:45:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-15 18:45:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-15 18:45:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-15 18:45:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-15 18:45:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-15 18:45:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-15 18:45:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-15 18:45:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-15 18:45:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-15 18:45:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-15 18:45:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-15 18:45:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-15 18:45:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-15 18:45:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-15 18:45:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-15 18:45:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-15 18:45:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-15 18:45:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-15 18:45:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-15 18:45:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-15 18:45:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-15 18:45:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-15 18:45:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-15 18:45:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-15 18:45:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-15 18:45:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-15 18:45:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-15 18:45:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-15 18:45:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-15 18:45:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-09-15 18:45:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-15 18:45:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-09-15 18:45:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-15 18:45:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-09-15 18:45:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-15 18:45:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-09-15 18:45:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-15 18:45:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-15 18:45:34,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:45:34,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165468430] [2024-09-15 18:45:34,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165468430] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:45:34,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232855736] [2024-09-15 18:45:34,855 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 18:45:34,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:34,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:45:34,857 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:45:34,858 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2024-09-15 18:45:35,034 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-09-15 18:45:35,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:45:35,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-09-15 18:45:35,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:45:35,226 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-15 18:45:35,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:45:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-15 18:45:37,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232855736] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:45:37,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:45:37,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 96 [2024-09-15 18:45:37,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124463373] [2024-09-15 18:45:37,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:45:37,066 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-09-15 18:45:37,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:45:37,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-09-15 18:45:37,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2305, Invalid=6815, Unknown=0, NotChecked=0, Total=9120 [2024-09-15 18:45:37,067 INFO L87 Difference]: Start difference. First operand 375 states and 376 transitions. Second operand has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 96 states have internal predecessors, (148), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-15 18:45:37,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:45:37,769 INFO L93 Difference]: Finished difference Result 522 states and 569 transitions. [2024-09-15 18:45:37,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-09-15 18:45:37,772 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 96 states have internal predecessors, (148), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 372 [2024-09-15 18:45:37,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:45:37,775 INFO L225 Difference]: With dead ends: 522 [2024-09-15 18:45:37,775 INFO L226 Difference]: Without dead ends: 376 [2024-09-15 18:45:37,776 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 744 SyntacticMatches, 92 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6657 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2305, Invalid=6815, Unknown=0, NotChecked=0, Total=9120 [2024-09-15 18:45:37,776 INFO L434 NwaCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-15 18:45:37,776 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1296 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-15 18:45:37,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-09-15 18:45:37,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2024-09-15 18:45:37,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 280 states have (on average 1.0071428571428571) internal successors, (282), 281 states have internal predecessors, (282), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-15 18:45:37,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 377 transitions. [2024-09-15 18:45:37,804 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 377 transitions. Word has length 372 [2024-09-15 18:45:37,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:45:37,804 INFO L474 AbstractCegarLoop]: Abstraction has 376 states and 377 transitions. [2024-09-15 18:45:37,804 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 96 states have internal predecessors, (148), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-15 18:45:37,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:37,805 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 377 transitions. [2024-09-15 18:45:37,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-09-15 18:45:37,806 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:45:37,806 INFO L216 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:45:37,819 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2024-09-15 18:45:38,010 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:38,010 INFO L399 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:45:38,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:38,011 INFO L85 PathProgramCache]: Analyzing trace with hash -2034854727, now seen corresponding path program 90 times [2024-09-15 18:45:38,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:45:38,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129897114] [2024-09-15 18:45:38,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:45:38,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:45:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:45:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-15 18:45:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-15 18:45:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-15 18:45:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-15 18:45:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-15 18:45:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-15 18:45:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-15 18:45:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-15 18:45:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-15 18:45:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-15 18:45:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-15 18:45:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-15 18:45:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-15 18:45:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-15 18:45:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-15 18:45:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-15 18:45:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-15 18:45:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-15 18:45:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-15 18:45:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-15 18:45:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-15 18:45:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-15 18:45:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-15 18:45:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-15 18:45:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-15 18:45:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-15 18:45:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-15 18:45:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-15 18:45:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-15 18:45:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-15 18:45:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-15 18:45:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-15 18:45:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-15 18:45:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-15 18:45:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-15 18:45:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-15 18:45:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-15 18:45:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-15 18:45:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-09-15 18:45:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-15 18:45:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2024-09-15 18:45:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-15 18:45:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2024-09-15 18:45:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-15 18:45:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2024-09-15 18:45:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1125 proven. 3106 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-15 18:45:39,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:45:39,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129897114] [2024-09-15 18:45:39,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129897114] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:45:39,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194615934] [2024-09-15 18:45:39,755 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 18:45:39,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:39,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:45:39,757 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:45:39,760 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2024-09-15 18:45:39,932 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2024-09-15 18:45:39,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:45:39,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-15 18:45:39,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:45:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-15 18:45:40,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:45:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-15 18:45:41,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194615934] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:45:41,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:45:41,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 54 [2024-09-15 18:45:41,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914320985] [2024-09-15 18:45:41,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:45:41,367 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-15 18:45:41,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:45:41,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-15 18:45:41,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=1673, Unknown=0, NotChecked=0, Total=2862 [2024-09-15 18:45:41,368 INFO L87 Difference]: Start difference. First operand 376 states and 377 transitions. Second operand has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-15 18:45:41,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:45:41,637 INFO L93 Difference]: Finished difference Result 389 states and 391 transitions. [2024-09-15 18:45:41,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-15 18:45:41,637 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 373 [2024-09-15 18:45:41,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:45:41,639 INFO L225 Difference]: With dead ends: 389 [2024-09-15 18:45:41,640 INFO L226 Difference]: Without dead ends: 387 [2024-09-15 18:45:41,640 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 789 SyntacticMatches, 92 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2662 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1195, Invalid=1775, Unknown=0, NotChecked=0, Total=2970 [2024-09-15 18:45:41,640 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:45:41,640 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 135 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:45:41,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-09-15 18:45:41,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 383. [2024-09-15 18:45:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 285 states have (on average 1.0070175438596491) internal successors, (287), 286 states have internal predecessors, (287), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-15 18:45:41,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 384 transitions. [2024-09-15 18:45:41,667 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 384 transitions. Word has length 373 [2024-09-15 18:45:41,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:45:41,668 INFO L474 AbstractCegarLoop]: Abstraction has 383 states and 384 transitions. [2024-09-15 18:45:41,668 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-15 18:45:41,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:41,668 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 384 transitions. [2024-09-15 18:45:41,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-09-15 18:45:41,669 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:45:41,670 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:45:41,683 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2024-09-15 18:45:41,873 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,92 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:41,874 INFO L399 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:45:41,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:41,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1981908533, now seen corresponding path program 91 times [2024-09-15 18:45:41,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:45:41,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885419933] [2024-09-15 18:45:41,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:45:41,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:45:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:45:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-15 18:45:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-15 18:45:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-15 18:45:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-15 18:45:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-15 18:45:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-15 18:45:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-15 18:45:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-15 18:45:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-15 18:45:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-15 18:45:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-15 18:45:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-15 18:45:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-15 18:45:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-15 18:45:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-15 18:45:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-15 18:45:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-15 18:45:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-15 18:45:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-15 18:45:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-15 18:45:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-15 18:45:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-15 18:45:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-15 18:45:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-15 18:45:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-15 18:45:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-15 18:45:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-15 18:45:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-15 18:45:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-15 18:45:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-15 18:45:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-15 18:45:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-15 18:45:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-15 18:45:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-15 18:45:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-15 18:45:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-15 18:45:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-15 18:45:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-15 18:45:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-09-15 18:45:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-15 18:45:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2024-09-15 18:45:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-15 18:45:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2024-09-15 18:45:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-15 18:45:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2024-09-15 18:45:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-15 18:45:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-15 18:45:45,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:45:45,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885419933] [2024-09-15 18:45:45,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885419933] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:45:45,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610173130] [2024-09-15 18:45:45,076 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-15 18:45:45,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:45,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:45:45,077 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:45:45,078 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2024-09-15 18:45:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:45,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-15 18:45:45,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:45:45,390 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-15 18:45:45,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:45:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-15 18:45:47,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610173130] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:45:47,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:45:47,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 98 [2024-09-15 18:45:47,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300431963] [2024-09-15 18:45:47,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:45:47,758 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-09-15 18:45:47,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:45:47,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-09-15 18:45:47,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2402, Invalid=7104, Unknown=0, NotChecked=0, Total=9506 [2024-09-15 18:45:47,759 INFO L87 Difference]: Start difference. First operand 383 states and 384 transitions. Second operand has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 98 states have internal predecessors, (151), 48 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-15 18:45:48,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:45:48,355 INFO L93 Difference]: Finished difference Result 533 states and 581 transitions. [2024-09-15 18:45:48,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-09-15 18:45:48,356 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 98 states have internal predecessors, (151), 48 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 380 [2024-09-15 18:45:48,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:45:48,361 INFO L225 Difference]: With dead ends: 533 [2024-09-15 18:45:48,361 INFO L226 Difference]: Without dead ends: 384 [2024-09-15 18:45:48,362 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 760 SyntacticMatches, 94 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6943 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2402, Invalid=7104, Unknown=0, NotChecked=0, Total=9506 [2024-09-15 18:45:48,362 INFO L434 NwaCegarLoop]: 101 mSDtfsCounter, 0 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-15 18:45:48,363 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 777 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-15 18:45:48,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-09-15 18:45:48,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2024-09-15 18:45:48,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 286 states have (on average 1.006993006993007) internal successors, (288), 287 states have internal predecessors, (288), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-15 18:45:48,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 385 transitions. [2024-09-15 18:45:48,395 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 385 transitions. Word has length 380 [2024-09-15 18:45:48,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:45:48,395 INFO L474 AbstractCegarLoop]: Abstraction has 384 states and 385 transitions. [2024-09-15 18:45:48,395 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 98 states have internal predecessors, (151), 48 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-15 18:45:48,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:48,396 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 385 transitions. [2024-09-15 18:45:48,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-09-15 18:45:48,397 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:45:48,397 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:45:48,410 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2024-09-15 18:45:48,597 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:48,598 INFO L399 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:45:48,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:48,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1030192553, now seen corresponding path program 92 times [2024-09-15 18:45:48,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:45:48,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408700985] [2024-09-15 18:45:48,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:45:48,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:45:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:45:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 18:45:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-15 18:45:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 18:45:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-15 18:45:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-15 18:45:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-15 18:45:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-15 18:45:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-15 18:45:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-15 18:45:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-15 18:45:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-15 18:45:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-15 18:45:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-15 18:45:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-15 18:45:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-15 18:45:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-15 18:45:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-15 18:45:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-15 18:45:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-15 18:45:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-15 18:45:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-15 18:45:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-15 18:45:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-15 18:45:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-15 18:45:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-15 18:45:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-15 18:45:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-15 18:45:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-15 18:45:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-15 18:45:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-15 18:45:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-15 18:45:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-15 18:45:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-15 18:45:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-15 18:45:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-15 18:45:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-15 18:45:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-15 18:45:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-15 18:45:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-15 18:45:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2024-09-15 18:45:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-15 18:45:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2024-09-15 18:45:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-15 18:45:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2024-09-15 18:45:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-15 18:45:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2024-09-15 18:45:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:50,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1173 proven. 3244 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-15 18:45:50,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:45:50,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408700985] [2024-09-15 18:45:50,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408700985] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:45:50,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796016416] [2024-09-15 18:45:50,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:45:50,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:50,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:45:50,314 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:45:50,315 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2024-09-15 18:45:50,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:45:50,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:45:50,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-09-15 18:45:50,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:45:50,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-15 18:45:50,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:45:52,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-15 18:45:52,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796016416] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:45:52,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:45:52,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 55 [2024-09-15 18:45:52,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310353449] [2024-09-15 18:45:52,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:45:52,052 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-15 18:45:52,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:45:52,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-15 18:45:52,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1238, Invalid=1732, Unknown=0, NotChecked=0, Total=2970 [2024-09-15 18:45:52,053 INFO L87 Difference]: Start difference. First operand 384 states and 385 transitions. Second operand has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 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) [2024-09-15 18:45:52,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:45:52,308 INFO L93 Difference]: Finished difference Result 397 states and 399 transitions. [2024-09-15 18:45:52,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-15 18:45:52,309 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 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 381 [2024-09-15 18:45:52,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:45:52,312 INFO L225 Difference]: With dead ends: 397 [2024-09-15 18:45:52,312 INFO L226 Difference]: Without dead ends: 395 [2024-09-15 18:45:52,312 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 954 GetRequests, 804 SyntacticMatches, 96 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2863 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1244, Invalid=1836, Unknown=0, NotChecked=0, Total=3080 [2024-09-15 18:45:52,312 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:45:52,312 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 137 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:45:52,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-09-15 18:45:52,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2024-09-15 18:45:52,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 291 states have (on average 1.006872852233677) internal successors, (293), 292 states have internal predecessors, (293), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-15 18:45:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2024-09-15 18:45:52,342 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 381 [2024-09-15 18:45:52,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:45:52,343 INFO L474 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2024-09-15 18:45:52,343 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 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) [2024-09-15 18:45:52,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:52,343 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2024-09-15 18:45:52,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-09-15 18:45:52,344 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:45:52,344 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:45:52,359 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2024-09-15 18:45:52,545 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,94 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:52,545 INFO L399 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:45:52,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:52,545 INFO L85 PathProgramCache]: Analyzing trace with hash -228483475, now seen corresponding path program 93 times [2024-09-15 18:45:52,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:45:52,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389799612] [2024-09-15 18:45:52,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:45:52,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:45:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:45:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-15 18:45:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-15 18:45:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-15 18:45:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-15 18:45:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-15 18:45:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-15 18:45:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-15 18:45:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-15 18:45:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-15 18:45:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-15 18:45:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-15 18:45:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-15 18:45:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-15 18:45:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-15 18:45:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-15 18:45:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-15 18:45:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-15 18:45:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-15 18:45:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-15 18:45:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-15 18:45:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-15 18:45:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-15 18:45:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-15 18:45:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-15 18:45:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-15 18:45:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-15 18:45:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-15 18:45:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-15 18:45:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-15 18:45:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-15 18:45:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-15 18:45:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-15 18:45:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-15 18:45:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-15 18:45:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-15 18:45:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-15 18:45:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-15 18:45:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-15 18:45:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-15 18:45:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2024-09-15 18:45:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-15 18:45:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2024-09-15 18:45:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-15 18:45:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2024-09-15 18:45:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-15 18:45:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2024-09-15 18:45:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-15 18:45:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:45:55,843 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-15 18:45:55,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:45:55,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389799612] [2024-09-15 18:45:55,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389799612] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:45:55,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743681439] [2024-09-15 18:45:55,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 18:45:55,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:55,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:45:55,845 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:45:55,846 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2024-09-15 18:45:56,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2024-09-15 18:45:56,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:45:56,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-15 18:45:56,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:45:56,205 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-15 18:45:56,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:45:58,787 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-15 18:45:58,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743681439] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:45:58,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:45:58,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 100 [2024-09-15 18:45:58,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733439510] [2024-09-15 18:45:58,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:45:58,788 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-09-15 18:45:58,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:45:58,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-09-15 18:45:58,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2501, Invalid=7399, Unknown=0, NotChecked=0, Total=9900 [2024-09-15 18:45:58,790 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand has 100 states, 100 states have (on average 1.54) internal successors, (154), 100 states have internal predecessors, (154), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-15 18:45:59,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:45:59,410 INFO L93 Difference]: Finished difference Result 544 states and 593 transitions. [2024-09-15 18:45:59,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-09-15 18:45:59,410 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.54) internal successors, (154), 100 states have internal predecessors, (154), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 388 [2024-09-15 18:45:59,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:45:59,413 INFO L225 Difference]: With dead ends: 544 [2024-09-15 18:45:59,413 INFO L226 Difference]: Without dead ends: 392 [2024-09-15 18:45:59,414 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 776 SyntacticMatches, 96 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7235 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2501, Invalid=7399, Unknown=0, NotChecked=0, Total=9900 [2024-09-15 18:45:59,414 INFO L434 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-15 18:45:59,414 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1154 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-15 18:45:59,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-09-15 18:45:59,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2024-09-15 18:45:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 292 states have (on average 1.0068493150684932) internal successors, (294), 293 states have internal predecessors, (294), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-15 18:45:59,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 393 transitions. [2024-09-15 18:45:59,443 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 393 transitions. Word has length 388 [2024-09-15 18:45:59,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:45:59,443 INFO L474 AbstractCegarLoop]: Abstraction has 392 states and 393 transitions. [2024-09-15 18:45:59,443 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 1.54) internal successors, (154), 100 states have internal predecessors, (154), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-15 18:45:59,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:59,443 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 393 transitions. [2024-09-15 18:45:59,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-09-15 18:45:59,445 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:45:59,445 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:45:59,460 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2024-09-15 18:45:59,648 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,95 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:45:59,649 INFO L399 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:45:59,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:45:59,649 INFO L85 PathProgramCache]: Analyzing trace with hash 167795449, now seen corresponding path program 94 times [2024-09-15 18:45:59,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:45:59,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678357523] [2024-09-15 18:45:59,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:45:59,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:45:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:46:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-15 18:46:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-15 18:46:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-15 18:46:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-15 18:46:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-15 18:46:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-15 18:46:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-15 18:46:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-15 18:46:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-15 18:46:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-15 18:46:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-15 18:46:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-15 18:46:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-15 18:46:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-15 18:46:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-15 18:46:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-15 18:46:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-15 18:46:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-15 18:46:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-15 18:46:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-15 18:46:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-15 18:46:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-15 18:46:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-15 18:46:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-15 18:46:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-15 18:46:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-15 18:46:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-15 18:46:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-15 18:46:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-15 18:46:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-15 18:46:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-15 18:46:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-15 18:46:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-15 18:46:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-15 18:46:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-15 18:46:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-15 18:46:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-15 18:46:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-15 18:46:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-15 18:46:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-15 18:46:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-09-15 18:46:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-15 18:46:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2024-09-15 18:46:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-15 18:46:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2024-09-15 18:46:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-15 18:46:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2024-09-15 18:46:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:01,599 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1222 proven. 3385 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-15 18:46:01,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:46:01,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678357523] [2024-09-15 18:46:01,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678357523] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:46:01,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258400065] [2024-09-15 18:46:01,600 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 18:46:01,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:46:01,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:46:01,604 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:46:01,604 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2024-09-15 18:46:01,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 18:46:01,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:46:01,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-09-15 18:46:01,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:46:01,959 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-15 18:46:01,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:46:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-15 18:46:03,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258400065] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:46:03,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:46:03,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 56 [2024-09-15 18:46:03,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997556818] [2024-09-15 18:46:03,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:46:03,726 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-15 18:46:03,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:46:03,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-15 18:46:03,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1288, Invalid=1792, Unknown=0, NotChecked=0, Total=3080 [2024-09-15 18:46:03,728 INFO L87 Difference]: Start difference. First operand 392 states and 393 transitions. Second operand has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-15 18:46:04,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:46:04,004 INFO L93 Difference]: Finished difference Result 405 states and 407 transitions. [2024-09-15 18:46:04,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-09-15 18:46:04,005 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 389 [2024-09-15 18:46:04,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:46:04,007 INFO L225 Difference]: With dead ends: 405 [2024-09-15 18:46:04,007 INFO L226 Difference]: Without dead ends: 403 [2024-09-15 18:46:04,008 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 823 SyntacticMatches, 96 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2874 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1294, Invalid=1898, Unknown=0, NotChecked=0, Total=3192 [2024-09-15 18:46:04,008 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:46:04,008 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 120 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:46:04,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-09-15 18:46:04,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 399. [2024-09-15 18:46:04,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 297 states have (on average 1.0067340067340067) internal successors, (299), 298 states have internal predecessors, (299), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-15 18:46:04,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 400 transitions. [2024-09-15 18:46:04,039 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 400 transitions. Word has length 389 [2024-09-15 18:46:04,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:46:04,040 INFO L474 AbstractCegarLoop]: Abstraction has 399 states and 400 transitions. [2024-09-15 18:46:04,040 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-15 18:46:04,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:46:04,040 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 400 transitions. [2024-09-15 18:46:04,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2024-09-15 18:46:04,055 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:46:04,055 INFO L216 NwaCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:46:04,068 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2024-09-15 18:46:04,259 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,96 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:46:04,259 INFO L399 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:46:04,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:46:04,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1821037685, now seen corresponding path program 95 times [2024-09-15 18:46:04,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:46:04,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088339905] [2024-09-15 18:46:04,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:46:04,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:46:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:46:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-15 18:46:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-15 18:46:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-15 18:46:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-15 18:46:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-15 18:46:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-15 18:46:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-15 18:46:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-15 18:46:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-15 18:46:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-15 18:46:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-15 18:46:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-15 18:46:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-15 18:46:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-15 18:46:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-15 18:46:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-15 18:46:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-15 18:46:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-15 18:46:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-15 18:46:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-15 18:46:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-15 18:46:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-15 18:46:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-15 18:46:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-15 18:46:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-15 18:46:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-15 18:46:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-15 18:46:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-15 18:46:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-15 18:46:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-15 18:46:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-15 18:46:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-15 18:46:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-15 18:46:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-15 18:46:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-15 18:46:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-15 18:46:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-15 18:46:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-15 18:46:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-15 18:46:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-15 18:46:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-09-15 18:46:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-15 18:46:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2024-09-15 18:46:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-15 18:46:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2024-09-15 18:46:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-15 18:46:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2024-09-15 18:46:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-15 18:46:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:07,780 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-15 18:46:07,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:46:07,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088339905] [2024-09-15 18:46:07,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088339905] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:46:07,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672929019] [2024-09-15 18:46:07,781 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 18:46:07,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:46:07,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:46:07,782 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:46:07,783 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2024-09-15 18:46:07,962 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2024-09-15 18:46:07,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:46:07,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-09-15 18:46:07,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:46:08,149 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-15 18:46:08,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:46:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-15 18:46:10,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672929019] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:46:10,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:46:10,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 102 [2024-09-15 18:46:10,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790364712] [2024-09-15 18:46:10,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:46:10,719 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2024-09-15 18:46:10,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:46:10,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2024-09-15 18:46:10,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2602, Invalid=7700, Unknown=0, NotChecked=0, Total=10302 [2024-09-15 18:46:10,721 INFO L87 Difference]: Start difference. First operand 399 states and 400 transitions. Second operand has 102 states, 102 states have (on average 1.5392156862745099) internal successors, (157), 102 states have internal predecessors, (157), 50 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-15 18:46:11,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:46:11,373 INFO L93 Difference]: Finished difference Result 555 states and 605 transitions. [2024-09-15 18:46:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-09-15 18:46:11,374 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.5392156862745099) internal successors, (157), 102 states have internal predecessors, (157), 50 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 396 [2024-09-15 18:46:11,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:46:11,376 INFO L225 Difference]: With dead ends: 555 [2024-09-15 18:46:11,376 INFO L226 Difference]: Without dead ends: 400 [2024-09-15 18:46:11,377 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 990 GetRequests, 792 SyntacticMatches, 98 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7533 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2602, Invalid=7700, Unknown=0, NotChecked=0, Total=10302 [2024-09-15 18:46:11,377 INFO L434 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-15 18:46:11,377 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1233 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-15 18:46:11,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-09-15 18:46:11,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2024-09-15 18:46:11,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 298 states have (on average 1.0067114093959733) internal successors, (300), 299 states have internal predecessors, (300), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-15 18:46:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 401 transitions. [2024-09-15 18:46:11,407 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 401 transitions. Word has length 396 [2024-09-15 18:46:11,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:46:11,407 INFO L474 AbstractCegarLoop]: Abstraction has 400 states and 401 transitions. [2024-09-15 18:46:11,408 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.5392156862745099) internal successors, (157), 102 states have internal predecessors, (157), 50 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-15 18:46:11,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:46:11,408 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 401 transitions. [2024-09-15 18:46:11,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-09-15 18:46:11,409 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:46:11,409 INFO L216 NwaCegarLoop]: trace histogram [49, 49, 49, 49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:46:11,423 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2024-09-15 18:46:11,613 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2024-09-15 18:46:11,614 INFO L399 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:46:11,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:46:11,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2080072681, now seen corresponding path program 96 times [2024-09-15 18:46:11,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:46:11,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41133667] [2024-09-15 18:46:11,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:46:11,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:46:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:46:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-15 18:46:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 18:46:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-15 18:46:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-15 18:46:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-15 18:46:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-15 18:46:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-15 18:46:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-15 18:46:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-15 18:46:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-15 18:46:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-15 18:46:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-15 18:46:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-15 18:46:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-15 18:46:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-15 18:46:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-15 18:46:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-15 18:46:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-15 18:46:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-15 18:46:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-15 18:46:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-15 18:46:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-15 18:46:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-15 18:46:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-15 18:46:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-15 18:46:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-15 18:46:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-15 18:46:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-15 18:46:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-15 18:46:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-15 18:46:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-15 18:46:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-15 18:46:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-15 18:46:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-15 18:46:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-15 18:46:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-15 18:46:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-15 18:46:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-15 18:46:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-15 18:46:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-15 18:46:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-15 18:46:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2024-09-15 18:46:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-09-15 18:46:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2024-09-15 18:46:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-15 18:46:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2024-09-15 18:46:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-09-15 18:46:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2024-09-15 18:46:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1272 proven. 3529 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-15 18:46:13,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:46:13,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41133667] [2024-09-15 18:46:13,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41133667] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:46:13,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25698080] [2024-09-15 18:46:13,439 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 18:46:13,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:46:13,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:46:13,440 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:46:13,441 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2024-09-15 18:46:13,625 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2024-09-15 18:46:13,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:46:13,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-09-15 18:46:13,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:46:13,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1321 proven. 3480 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-15 18:46:13,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:46:15,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1321 proven. 3480 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-15 18:46:15,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25698080] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:46:15,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:46:15,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 57 [2024-09-15 18:46:15,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540308438] [2024-09-15 18:46:15,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:46:15,372 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-15 18:46:15,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:46:15,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-15 18:46:15,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1339, Invalid=1853, Unknown=0, NotChecked=0, Total=3192 [2024-09-15 18:46:15,373 INFO L87 Difference]: Start difference. First operand 400 states and 401 transitions. Second operand has 57 states, 57 states have (on average 2.807017543859649) internal successors, (160), 55 states have internal predecessors, (160), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-15 18:46:15,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:46:15,678 INFO L93 Difference]: Finished difference Result 413 states and 415 transitions. [2024-09-15 18:46:15,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-15 18:46:15,678 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.807017543859649) internal successors, (160), 55 states have internal predecessors, (160), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 397 [2024-09-15 18:46:15,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:46:15,683 INFO L225 Difference]: With dead ends: 413 [2024-09-15 18:46:15,683 INFO L226 Difference]: Without dead ends: 411 [2024-09-15 18:46:15,684 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 994 GetRequests, 840 SyntacticMatches, 98 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2983 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1345, Invalid=1961, Unknown=0, NotChecked=0, Total=3306 [2024-09-15 18:46:15,684 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:46:15,684 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 139 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:46:15,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-09-15 18:46:15,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 407. [2024-09-15 18:46:15,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 303 states have (on average 1.0066006600660067) internal successors, (305), 304 states have internal predecessors, (305), 52 states have call successors, (52), 52 states have call predecessors, (52), 51 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-15 18:46:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 408 transitions. [2024-09-15 18:46:15,741 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 408 transitions. Word has length 397 [2024-09-15 18:46:15,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:46:15,741 INFO L474 AbstractCegarLoop]: Abstraction has 407 states and 408 transitions. [2024-09-15 18:46:15,741 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.807017543859649) internal successors, (160), 55 states have internal predecessors, (160), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-15 18:46:15,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:46:15,742 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 408 transitions. [2024-09-15 18:46:15,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-09-15 18:46:15,743 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:46:15,743 INFO L216 NwaCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:46:15,759 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2024-09-15 18:46:15,949 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2024-09-15 18:46:15,949 INFO L399 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:46:15,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:46:15,950 INFO L85 PathProgramCache]: Analyzing trace with hash -440857427, now seen corresponding path program 97 times [2024-09-15 18:46:15,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:46:15,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442797682] [2024-09-15 18:46:15,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:46:15,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:46:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:46:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-15 18:46:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 18:46:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-15 18:46:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-15 18:46:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-15 18:46:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-15 18:46:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-15 18:46:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-15 18:46:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-15 18:46:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-15 18:46:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-15 18:46:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-15 18:46:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-15 18:46:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-15 18:46:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-15 18:46:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-15 18:46:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-15 18:46:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-15 18:46:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-15 18:46:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-15 18:46:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-15 18:46:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-15 18:46:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-15 18:46:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-15 18:46:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-15 18:46:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-15 18:46:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-15 18:46:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-15 18:46:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-15 18:46:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-15 18:46:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-15 18:46:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-15 18:46:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-15 18:46:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-15 18:46:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-15 18:46:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-15 18:46:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-15 18:46:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-15 18:46:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-15 18:46:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-15 18:46:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-15 18:46:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2024-09-15 18:46:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-09-15 18:46:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2024-09-15 18:46:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-15 18:46:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2024-09-15 18:46:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-09-15 18:46:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2024-09-15 18:46:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-15 18:46:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-15 18:46:19,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:46:19,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442797682] [2024-09-15 18:46:19,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442797682] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:46:19,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854269795] [2024-09-15 18:46:19,165 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-15 18:46:19,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:46:19,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:46:19,166 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:46:19,168 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2024-09-15 18:46:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:19,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-09-15 18:46:19,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:46:19,468 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-15 18:46:19,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:46:22,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-15 18:46:22,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854269795] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:46:22,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:46:22,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103, 103] total 104 [2024-09-15 18:46:22,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449787851] [2024-09-15 18:46:22,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:46:22,051 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-09-15 18:46:22,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:46:22,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-09-15 18:46:22,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2705, Invalid=8007, Unknown=0, NotChecked=0, Total=10712 [2024-09-15 18:46:22,054 INFO L87 Difference]: Start difference. First operand 407 states and 408 transitions. Second operand has 104 states, 104 states have (on average 1.5384615384615385) internal successors, (160), 104 states have internal predecessors, (160), 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) [2024-09-15 18:46:22,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:46:22,645 INFO L93 Difference]: Finished difference Result 566 states and 617 transitions. [2024-09-15 18:46:22,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-09-15 18:46:22,645 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.5384615384615385) internal successors, (160), 104 states have internal predecessors, (160), 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 404 [2024-09-15 18:46:22,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:46:22,651 INFO L225 Difference]: With dead ends: 566 [2024-09-15 18:46:22,651 INFO L226 Difference]: Without dead ends: 408 [2024-09-15 18:46:22,653 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1010 GetRequests, 808 SyntacticMatches, 100 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7837 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2705, Invalid=8007, Unknown=0, NotChecked=0, Total=10712 [2024-09-15 18:46:22,653 INFO L434 NwaCegarLoop]: 107 mSDtfsCounter, 0 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-15 18:46:22,653 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 832 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-15 18:46:22,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2024-09-15 18:46:22,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2024-09-15 18:46:22,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 304 states have (on average 1.006578947368421) internal successors, (306), 305 states have internal predecessors, (306), 52 states have call successors, (52), 52 states have call predecessors, (52), 51 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-15 18:46:22,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 409 transitions. [2024-09-15 18:46:22,707 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 409 transitions. Word has length 404 [2024-09-15 18:46:22,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:46:22,707 INFO L474 AbstractCegarLoop]: Abstraction has 408 states and 409 transitions. [2024-09-15 18:46:22,707 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.5384615384615385) internal successors, (160), 104 states have internal predecessors, (160), 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) [2024-09-15 18:46:22,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:46:22,707 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 409 transitions. [2024-09-15 18:46:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-09-15 18:46:22,709 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:46:22,709 INFO L216 NwaCegarLoop]: trace histogram [50, 50, 50, 50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:46:22,722 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2024-09-15 18:46:22,909 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2024-09-15 18:46:22,910 INFO L399 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:46:22,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:46:22,910 INFO L85 PathProgramCache]: Analyzing trace with hash -582667975, now seen corresponding path program 98 times [2024-09-15 18:46:22,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:46:22,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443030721] [2024-09-15 18:46:22,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:46:22,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:46:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:46:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-15 18:46:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-15 18:46:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-15 18:46:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-15 18:46:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-15 18:46:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-15 18:46:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-15 18:46:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-15 18:46:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-15 18:46:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-15 18:46:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-15 18:46:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-15 18:46:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-15 18:46:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-15 18:46:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-15 18:46:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-15 18:46:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-15 18:46:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-15 18:46:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-15 18:46:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-15 18:46:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-15 18:46:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-15 18:46:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-15 18:46:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-15 18:46:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-15 18:46:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-15 18:46:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-15 18:46:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-15 18:46:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-15 18:46:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-15 18:46:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-15 18:46:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-15 18:46:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-15 18:46:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-15 18:46:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-15 18:46:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-15 18:46:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-15 18:46:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-15 18:46:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-15 18:46:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-15 18:46:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-15 18:46:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-15 18:46:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2024-09-15 18:46:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-09-15 18:46:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2024-09-15 18:46:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-15 18:46:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2024-09-15 18:46:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-09-15 18:46:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2024-09-15 18:46:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:24,881 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1323 proven. 3676 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-15 18:46:24,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:46:24,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443030721] [2024-09-15 18:46:24,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443030721] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:46:24,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007510087] [2024-09-15 18:46:24,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:46:24,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:46:24,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:46:24,883 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:46:24,884 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2024-09-15 18:46:25,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:46:25,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:46:25,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-09-15 18:46:25,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:46:25,189 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1373 proven. 3626 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-15 18:46:25,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:46:26,940 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1373 proven. 3626 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-15 18:46:26,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007510087] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:46:26,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:46:26,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 58 [2024-09-15 18:46:26,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311437169] [2024-09-15 18:46:26,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:46:26,942 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-15 18:46:26,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:46:26,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-15 18:46:26,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1391, Invalid=1915, Unknown=0, NotChecked=0, Total=3306 [2024-09-15 18:46:26,944 INFO L87 Difference]: Start difference. First operand 408 states and 409 transitions. Second operand has 58 states, 58 states have (on average 2.810344827586207) internal successors, (163), 56 states have internal predecessors, (163), 51 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-15 18:46:27,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:46:27,238 INFO L93 Difference]: Finished difference Result 421 states and 423 transitions. [2024-09-15 18:46:27,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-09-15 18:46:27,239 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.810344827586207) internal successors, (163), 56 states have internal predecessors, (163), 51 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 405 [2024-09-15 18:46:27,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:46:27,241 INFO L225 Difference]: With dead ends: 421 [2024-09-15 18:46:27,242 INFO L226 Difference]: Without dead ends: 419 [2024-09-15 18:46:27,242 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1014 GetRequests, 855 SyntacticMatches, 102 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3196 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1397, Invalid=2025, Unknown=0, NotChecked=0, Total=3422 [2024-09-15 18:46:27,246 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:46:27,246 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 108 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:46:27,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2024-09-15 18:46:27,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 415. [2024-09-15 18:46:27,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 309 states have (on average 1.006472491909385) internal successors, (311), 310 states have internal predecessors, (311), 53 states have call successors, (53), 53 states have call predecessors, (53), 52 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-15 18:46:27,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 416 transitions. [2024-09-15 18:46:27,280 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 416 transitions. Word has length 405 [2024-09-15 18:46:27,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:46:27,281 INFO L474 AbstractCegarLoop]: Abstraction has 415 states and 416 transitions. [2024-09-15 18:46:27,281 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.810344827586207) internal successors, (163), 56 states have internal predecessors, (163), 51 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-15 18:46:27,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:46:27,281 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 416 transitions. [2024-09-15 18:46:27,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-09-15 18:46:27,285 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:46:27,286 INFO L216 NwaCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:46:27,299 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2024-09-15 18:46:27,486 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2024-09-15 18:46:27,486 INFO L399 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:46:27,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:46:27,486 INFO L85 PathProgramCache]: Analyzing trace with hash 2139016523, now seen corresponding path program 99 times [2024-09-15 18:46:27,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:46:27,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113829568] [2024-09-15 18:46:27,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:46:27,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:46:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:46:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-15 18:46:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-15 18:46:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-15 18:46:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-15 18:46:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-15 18:46:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-15 18:46:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-15 18:46:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-15 18:46:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-15 18:46:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-15 18:46:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-15 18:46:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-15 18:46:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-15 18:46:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-15 18:46:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-15 18:46:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-15 18:46:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-15 18:46:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-15 18:46:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-15 18:46:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-15 18:46:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-15 18:46:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-15 18:46:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-15 18:46:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-15 18:46:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-15 18:46:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-15 18:46:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-15 18:46:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-15 18:46:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-15 18:46:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-15 18:46:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-15 18:46:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-15 18:46:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-15 18:46:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-15 18:46:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-15 18:46:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-15 18:46:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-15 18:46:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-15 18:46:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-15 18:46:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-15 18:46:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-15 18:46:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-15 18:46:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2024-09-15 18:46:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-09-15 18:46:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2024-09-15 18:46:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-15 18:46:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2024-09-15 18:46:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-09-15 18:46:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2024-09-15 18:46:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-15 18:46:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:31,288 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-15 18:46:31,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:46:31,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113829568] [2024-09-15 18:46:31,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113829568] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:46:31,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118594765] [2024-09-15 18:46:31,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 18:46:31,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:46:31,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:46:31,289 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:46:31,290 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2024-09-15 18:46:31,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2024-09-15 18:46:31,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:46:31,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-09-15 18:46:31,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:46:31,679 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-15 18:46:31,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:46:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-15 18:46:34,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118594765] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:46:34,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:46:34,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105, 105] total 106 [2024-09-15 18:46:34,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311607141] [2024-09-15 18:46:34,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:46:34,538 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-09-15 18:46:34,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:46:34,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-09-15 18:46:34,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2810, Invalid=8320, Unknown=0, NotChecked=0, Total=11130 [2024-09-15 18:46:34,540 INFO L87 Difference]: Start difference. First operand 415 states and 416 transitions. Second operand has 106 states, 106 states have (on average 1.5377358490566038) internal successors, (163), 106 states have internal predecessors, (163), 52 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-15 18:46:35,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:46:35,039 INFO L93 Difference]: Finished difference Result 577 states and 629 transitions. [2024-09-15 18:46:35,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-09-15 18:46:35,039 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 1.5377358490566038) internal successors, (163), 106 states have internal predecessors, (163), 52 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 412 [2024-09-15 18:46:35,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:46:35,042 INFO L225 Difference]: With dead ends: 577 [2024-09-15 18:46:35,042 INFO L226 Difference]: Without dead ends: 416 [2024-09-15 18:46:35,043 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 824 SyntacticMatches, 102 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8147 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2810, Invalid=8320, Unknown=0, NotChecked=0, Total=11130 [2024-09-15 18:46:35,043 INFO L434 NwaCegarLoop]: 109 mSDtfsCounter, 0 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 18:46:35,044 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 778 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 18:46:35,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-09-15 18:46:35,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2024-09-15 18:46:35,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 310 states have (on average 1.0064516129032257) internal successors, (312), 311 states have internal predecessors, (312), 53 states have call successors, (53), 53 states have call predecessors, (53), 52 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-15 18:46:35,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 417 transitions. [2024-09-15 18:46:35,076 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 417 transitions. Word has length 412 [2024-09-15 18:46:35,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:46:35,077 INFO L474 AbstractCegarLoop]: Abstraction has 416 states and 417 transitions. [2024-09-15 18:46:35,077 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 1.5377358490566038) internal successors, (163), 106 states have internal predecessors, (163), 52 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-15 18:46:35,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:46:35,077 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 417 transitions. [2024-09-15 18:46:35,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-09-15 18:46:35,078 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:46:35,079 INFO L216 NwaCegarLoop]: trace histogram [51, 51, 51, 51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:46:35,092 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2024-09-15 18:46:35,279 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2024-09-15 18:46:35,279 INFO L399 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:46:35,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:46:35,280 INFO L85 PathProgramCache]: Analyzing trace with hash -535583273, now seen corresponding path program 100 times [2024-09-15 18:46:35,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:46:35,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591550340] [2024-09-15 18:46:35,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:46:35,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:46:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:46:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 18:46:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-15 18:46:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-15 18:46:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-15 18:46:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-15 18:46:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-15 18:46:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-15 18:46:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-15 18:46:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-15 18:46:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-15 18:46:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-15 18:46:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-15 18:46:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-15 18:46:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-15 18:46:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-15 18:46:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-15 18:46:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-15 18:46:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-15 18:46:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-15 18:46:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-15 18:46:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-15 18:46:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-15 18:46:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-15 18:46:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-15 18:46:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-15 18:46:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-15 18:46:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-15 18:46:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-15 18:46:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-15 18:46:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-15 18:46:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-15 18:46:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-15 18:46:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-15 18:46:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-15 18:46:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-15 18:46:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-09-15 18:46:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-15 18:46:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-09-15 18:46:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-15 18:46:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-09-15 18:46:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-15 18:46:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-09-15 18:46:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-15 18:46:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2024-09-15 18:46:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-09-15 18:46:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2024-09-15 18:46:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-15 18:46:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2024-09-15 18:46:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-09-15 18:46:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2024-09-15 18:46:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:37,257 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1375 proven. 3826 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-15 18:46:37,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:46:37,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591550340] [2024-09-15 18:46:37,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591550340] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:46:37,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249911105] [2024-09-15 18:46:37,258 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 18:46:37,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:46:37,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:46:37,259 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:46:37,260 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2024-09-15 18:46:37,387 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 18:46:37,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:46:37,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-09-15 18:46:37,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:46:37,630 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1426 proven. 3775 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-15 18:46:37,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:46:39,346 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1426 proven. 3775 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-15 18:46:39,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249911105] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:46:39,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:46:39,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 59 [2024-09-15 18:46:39,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067817067] [2024-09-15 18:46:39,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:46:39,347 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-15 18:46:39,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:46:39,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-15 18:46:39,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1444, Invalid=1978, Unknown=0, NotChecked=0, Total=3422 [2024-09-15 18:46:39,348 INFO L87 Difference]: Start difference. First operand 416 states and 417 transitions. Second operand has 59 states, 59 states have (on average 2.8135593220338984) internal successors, (166), 57 states have internal predecessors, (166), 52 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-15 18:46:39,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:46:39,673 INFO L93 Difference]: Finished difference Result 429 states and 431 transitions. [2024-09-15 18:46:39,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-09-15 18:46:39,674 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.8135593220338984) internal successors, (166), 57 states have internal predecessors, (166), 52 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 413 [2024-09-15 18:46:39,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:46:39,676 INFO L225 Difference]: With dead ends: 429 [2024-09-15 18:46:39,676 INFO L226 Difference]: Without dead ends: 427 [2024-09-15 18:46:39,677 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 874 SyntacticMatches, 102 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3207 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1450, Invalid=2090, Unknown=0, NotChecked=0, Total=3540 [2024-09-15 18:46:39,677 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 18:46:39,677 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 134 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 18:46:39,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-09-15 18:46:39,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 423. [2024-09-15 18:46:39,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 315 states have (on average 1.0063492063492063) internal successors, (317), 316 states have internal predecessors, (317), 54 states have call successors, (54), 54 states have call predecessors, (54), 53 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2024-09-15 18:46:39,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 424 transitions. [2024-09-15 18:46:39,710 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 424 transitions. Word has length 413 [2024-09-15 18:46:39,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:46:39,710 INFO L474 AbstractCegarLoop]: Abstraction has 423 states and 424 transitions. [2024-09-15 18:46:39,710 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.8135593220338984) internal successors, (166), 57 states have internal predecessors, (166), 52 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-15 18:46:39,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:46:39,710 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 424 transitions. [2024-09-15 18:46:39,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-09-15 18:46:39,712 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:46:39,712 INFO L216 NwaCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:46:39,726 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2024-09-15 18:46:39,915 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2024-09-15 18:46:39,916 INFO L399 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:46:39,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:46:39,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2118093549, now seen corresponding path program 101 times [2024-09-15 18:46:39,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:46:39,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542247883] [2024-09-15 18:46:39,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:46:39,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:46:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:46:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 18:46:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-15 18:46:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-15 18:46:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-15 18:46:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-15 18:46:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-15 18:46:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-15 18:46:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-15 18:46:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-15 18:46:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-15 18:46:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-15 18:46:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-15 18:46:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-15 18:46:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-15 18:46:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-15 18:46:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-15 18:46:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-15 18:46:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-15 18:46:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-15 18:46:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-15 18:46:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-15 18:46:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-15 18:46:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-15 18:46:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-15 18:46:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-15 18:46:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-15 18:46:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-15 18:46:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-15 18:46:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-15 18:46:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-15 18:46:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-15 18:46:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-15 18:46:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-15 18:46:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-15 18:46:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-15 18:46:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-09-15 18:46:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-15 18:46:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-09-15 18:46:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-15 18:46:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-09-15 18:46:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-15 18:46:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-09-15 18:46:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-15 18:46:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2024-09-15 18:46:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-09-15 18:46:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2024-09-15 18:46:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-15 18:46:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2024-09-15 18:46:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-09-15 18:46:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2024-09-15 18:46:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-15 18:46:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-09-15 18:46:43,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:46:43,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542247883] [2024-09-15 18:46:43,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542247883] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:46:43,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367805479] [2024-09-15 18:46:43,602 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 18:46:43,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:46:43,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:46:43,603 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:46:43,604 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2024-09-15 18:46:43,794 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2024-09-15 18:46:43,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:46:43,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-09-15 18:46:43,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:46:44,012 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-09-15 18:46:44,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:46:46,929 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-09-15 18:46:46,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367805479] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:46:46,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:46:46,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107, 107] total 108 [2024-09-15 18:46:46,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865332022] [2024-09-15 18:46:46,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:46:46,930 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2024-09-15 18:46:46,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:46:46,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2024-09-15 18:46:46,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2917, Invalid=8639, Unknown=0, NotChecked=0, Total=11556 [2024-09-15 18:46:46,933 INFO L87 Difference]: Start difference. First operand 423 states and 424 transitions. Second operand has 108 states, 108 states have (on average 1.537037037037037) internal successors, (166), 108 states have internal predecessors, (166), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-15 18:46:47,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:46:47,669 INFO L93 Difference]: Finished difference Result 588 states and 641 transitions. [2024-09-15 18:46:47,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-09-15 18:46:47,669 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.537037037037037) internal successors, (166), 108 states have internal predecessors, (166), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 420 [2024-09-15 18:46:47,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:46:47,672 INFO L225 Difference]: With dead ends: 588 [2024-09-15 18:46:47,672 INFO L226 Difference]: Without dead ends: 424 [2024-09-15 18:46:47,673 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1050 GetRequests, 840 SyntacticMatches, 104 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8463 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2917, Invalid=8639, Unknown=0, NotChecked=0, Total=11556 [2024-09-15 18:46:47,673 INFO L434 NwaCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-15 18:46:47,673 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1192 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-15 18:46:47,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2024-09-15 18:46:47,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2024-09-15 18:46:47,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 316 states have (on average 1.0063291139240507) internal successors, (318), 317 states have internal predecessors, (318), 54 states have call successors, (54), 54 states have call predecessors, (54), 53 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2024-09-15 18:46:47,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 425 transitions. [2024-09-15 18:46:47,707 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 425 transitions. Word has length 420 [2024-09-15 18:46:47,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:46:47,707 INFO L474 AbstractCegarLoop]: Abstraction has 424 states and 425 transitions. [2024-09-15 18:46:47,707 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 1.537037037037037) internal successors, (166), 108 states have internal predecessors, (166), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-15 18:46:47,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:46:47,708 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 425 transitions. [2024-09-15 18:46:47,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-09-15 18:46:47,709 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:46:47,709 INFO L216 NwaCegarLoop]: trace histogram [52, 52, 52, 52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:46:47,725 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2024-09-15 18:46:47,913 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2024-09-15 18:46:47,917 INFO L399 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:46:47,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:46:47,918 INFO L85 PathProgramCache]: Analyzing trace with hash -571926663, now seen corresponding path program 102 times [2024-09-15 18:46:47,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:46:47,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709822549] [2024-09-15 18:46:47,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:46:47,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:46:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:46:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-15 18:46:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-15 18:46:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-15 18:46:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-15 18:46:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-15 18:46:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-15 18:46:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-15 18:46:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-15 18:46:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-15 18:46:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-15 18:46:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-15 18:46:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-15 18:46:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-15 18:46:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-15 18:46:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-15 18:46:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-15 18:46:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-15 18:46:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-15 18:46:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-15 18:46:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-15 18:46:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-15 18:46:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-15 18:46:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-15 18:46:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-15 18:46:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-15 18:46:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-15 18:46:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-15 18:46:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-15 18:46:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-15 18:46:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-15 18:46:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-15 18:46:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-15 18:46:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-15 18:46:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-15 18:46:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-15 18:46:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-15 18:46:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-09-15 18:46:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-15 18:46:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-09-15 18:46:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-15 18:46:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-09-15 18:46:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-15 18:46:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-09-15 18:46:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-15 18:46:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2024-09-15 18:46:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-09-15 18:46:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2024-09-15 18:46:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-15 18:46:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2024-09-15 18:46:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-09-15 18:46:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2024-09-15 18:46:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:46:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1428 proven. 3979 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-09-15 18:46:50,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:46:50,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709822549] [2024-09-15 18:46:50,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709822549] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:46:50,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584006834] [2024-09-15 18:46:50,222 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 18:46:50,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:46:50,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:46:50,224 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:46:50,225 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2024-09-15 18:46:50,425 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2024-09-15 18:46:50,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:46:50,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-09-15 18:46:50,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:46:50,651 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1480 proven. 3927 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-09-15 18:46:50,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:46:52,711 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1480 proven. 3927 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-09-15 18:46:52,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584006834] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:46:52,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:46:52,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 60 [2024-09-15 18:46:52,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813533159] [2024-09-15 18:46:52,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:46:52,712 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-15 18:46:52,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:46:52,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-15 18:46:52,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1498, Invalid=2042, Unknown=0, NotChecked=0, Total=3540 [2024-09-15 18:46:52,713 INFO L87 Difference]: Start difference. First operand 424 states and 425 transitions. Second operand has 60 states, 60 states have (on average 2.816666666666667) internal successors, (169), 58 states have internal predecessors, (169), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-15 18:46:53,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:46:53,013 INFO L93 Difference]: Finished difference Result 437 states and 439 transitions. [2024-09-15 18:46:53,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-15 18:46:53,013 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.816666666666667) internal successors, (169), 58 states have internal predecessors, (169), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 421 [2024-09-15 18:46:53,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:46:53,016 INFO L225 Difference]: With dead ends: 437 [2024-09-15 18:46:53,016 INFO L226 Difference]: Without dead ends: 435 [2024-09-15 18:46:53,017 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1054 GetRequests, 891 SyntacticMatches, 104 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3322 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1504, Invalid=2156, Unknown=0, NotChecked=0, Total=3660 [2024-09-15 18:46:53,017 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:46:53,017 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 103 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:46:53,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2024-09-15 18:46:53,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 431. [2024-09-15 18:46:53,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 321 states have (on average 1.0062305295950156) internal successors, (323), 322 states have internal predecessors, (323), 55 states have call successors, (55), 55 states have call predecessors, (55), 54 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-09-15 18:46:53,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 432 transitions. [2024-09-15 18:46:53,053 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 432 transitions. Word has length 421 [2024-09-15 18:46:53,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:46:53,054 INFO L474 AbstractCegarLoop]: Abstraction has 431 states and 432 transitions. [2024-09-15 18:46:53,054 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.816666666666667) internal successors, (169), 58 states have internal predecessors, (169), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-15 18:46:53,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:46:53,054 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 432 transitions. [2024-09-15 18:46:53,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2024-09-15 18:46:53,055 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:46:53,055 INFO L216 NwaCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:46:53,069 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2024-09-15 18:46:53,262 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,104 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:46:53,262 INFO L399 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:46:53,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:46:53,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1477926667, now seen corresponding path program 103 times [2024-09-15 18:46:53,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:46:53,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516145724] [2024-09-15 18:46:53,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:46:53,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:46:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat