./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/MultCommutative-2.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/MultCommutative-2.c -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 ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-18 16:37:09,575 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-18 16:37:09,637 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-18 16:37:09,641 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-18 16:37:09,642 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-18 16:37:09,670 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-18 16:37:09,670 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-18 16:37:09,671 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-18 16:37:09,671 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-18 16:37:09,672 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-18 16:37:09,672 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-18 16:37:09,672 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-18 16:37:09,682 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-18 16:37:09,683 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-18 16:37:09,683 INFO L153 SettingsManager]: * Use SBE=true [2024-09-18 16:37:09,683 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-18 16:37:09,686 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-18 16:37:09,686 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-18 16:37:09,686 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-18 16:37:09,687 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-18 16:37:09,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-18 16:37:09,690 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-18 16:37:09,690 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-18 16:37:09,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-18 16:37:09,691 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-18 16:37:09,691 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-18 16:37:09,691 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-18 16:37:09,691 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-18 16:37:09,692 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-18 16:37:09,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-18 16:37:09,692 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-18 16:37:09,692 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-18 16:37:09,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 16:37:09,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-18 16:37:09,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-18 16:37:09,693 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-18 16:37:09,693 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-18 16:37:09,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-18 16:37:09,693 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-18 16:37:09,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-18 16:37:09,694 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-18 16:37:09,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-18 16:37:09,696 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-18 16:37:09,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-18 16:37:09,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-18 16:37:09,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-18 16:37:09,960 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-18 16:37:09,961 INFO L274 PluginConnector]: CDTParser initialized [2024-09-18 16:37:09,962 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/MultCommutative-2.c [2024-09-18 16:37:10,566 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-18 16:37:12,220 INFO L384 CDTParser]: Found 1 translation units. [2024-09-18 16:37:12,220 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/MultCommutative-2.c [2024-09-18 16:37:12,228 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/bbf895c05/a8991903b5274c0faded3ea8481ec316/FLAG069d0c051 [2024-09-18 16:37:12,239 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/bbf895c05/a8991903b5274c0faded3ea8481ec316 [2024-09-18 16:37:12,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-18 16:37:12,242 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-18 16:37:12,243 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-18 16:37:12,244 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-18 16:37:12,250 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-18 16:37:12,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 04:37:12" (1/1) ... [2024-09-18 16:37:12,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@292e96a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:12, skipping insertion in model container [2024-09-18 16:37:12,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 04:37:12" (1/1) ... [2024-09-18 16:37:12,270 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-18 16:37:12,411 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/recursive/MultCommutative-2.c[970,983] [2024-09-18 16:37:12,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 16:37:12,426 INFO L200 MainTranslator]: Completed pre-run [2024-09-18 16:37:12,440 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/recursive/MultCommutative-2.c[970,983] [2024-09-18 16:37:12,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 16:37:12,457 INFO L204 MainTranslator]: Completed translation [2024-09-18 16:37:12,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:12 WrapperNode [2024-09-18 16:37:12,458 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-18 16:37:12,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-18 16:37:12,459 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-18 16:37:12,459 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-18 16:37:12,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:12" (1/1) ... [2024-09-18 16:37:12,473 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:12" (1/1) ... [2024-09-18 16:37:12,479 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-18 16:37:12,479 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-18 16:37:12,480 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-18 16:37:12,480 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-18 16:37:12,480 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-18 16:37:12,489 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:12" (1/1) ... [2024-09-18 16:37:12,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:12" (1/1) ... [2024-09-18 16:37:12,491 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:12" (1/1) ... [2024-09-18 16:37:12,505 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]. [2024-09-18 16:37:12,506 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:12" (1/1) ... [2024-09-18 16:37:12,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:12" (1/1) ... [2024-09-18 16:37:12,509 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:12" (1/1) ... [2024-09-18 16:37:12,511 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:12" (1/1) ... [2024-09-18 16:37:12,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:12" (1/1) ... [2024-09-18 16:37:12,515 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:12" (1/1) ... [2024-09-18 16:37:12,516 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-18 16:37:12,517 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-18 16:37:12,518 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-18 16:37:12,518 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-18 16:37:12,519 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:12" (1/1) ... [2024-09-18 16:37:12,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 16:37:12,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:37:12,553 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) [2024-09-18 16:37:12,556 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 [2024-09-18 16:37:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-18 16:37:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-18 16:37:12,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-18 16:37:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2024-09-18 16:37:12,602 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2024-09-18 16:37:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-18 16:37:12,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-18 16:37:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-18 16:37:12,604 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-18 16:37:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-18 16:37:12,667 INFO L242 CfgBuilder]: Building ICFG [2024-09-18 16:37:12,669 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-18 16:37:12,817 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-09-18 16:37:12,819 INFO L291 CfgBuilder]: Performing block encoding [2024-09-18 16:37:12,839 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-18 16:37:12,840 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-18 16:37:12,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:37:12 BoogieIcfgContainer [2024-09-18 16:37:12,841 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-18 16:37:12,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-18 16:37:12,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-18 16:37:12,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-18 16:37:12,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 04:37:12" (1/3) ... [2024-09-18 16:37:12,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191d147d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 04:37:12, skipping insertion in model container [2024-09-18 16:37:12,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:12" (2/3) ... [2024-09-18 16:37:12,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191d147d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 04:37:12, skipping insertion in model container [2024-09-18 16:37:12,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:37:12" (3/3) ... [2024-09-18 16:37:12,852 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2024-09-18 16:37:12,865 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-18 16:37:12,866 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-18 16:37:12,917 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-18 16:37:12,922 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;@228c3216, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-18 16:37:12,923 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-18 16:37:12,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-18 16:37:12,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-18 16:37:12,937 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:12,937 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:12,937 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:12,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:12,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1859846447, now seen corresponding path program 1 times [2024-09-18 16:37:12,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:12,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202242860] [2024-09-18 16:37:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:12,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:13,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:13,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:37:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:13,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-18 16:37:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:13,444 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-18 16:37:13,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:13,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202242860] [2024-09-18 16:37:13,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202242860] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 16:37:13,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 16:37:13,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-18 16:37:13,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687661872] [2024-09-18 16:37:13,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:37:13,452 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-18 16:37:13,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:13,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-18 16:37:13,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-18 16:37:13,476 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-18 16:37:13,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:13,580 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2024-09-18 16:37:13,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-18 16:37:13,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-09-18 16:37:13,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:13,589 INFO L225 Difference]: With dead ends: 41 [2024-09-18 16:37:13,590 INFO L226 Difference]: Without dead ends: 29 [2024-09-18 16:37:13,593 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-18 16:37:13,596 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 164 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 [2024-09-18 16:37:13,602 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 164 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 16:37:13,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-18 16:37:13,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-09-18 16:37:13,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-09-18 16:37:13,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2024-09-18 16:37:13,687 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 23 [2024-09-18 16:37:13,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:13,688 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2024-09-18 16:37:13,690 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-18 16:37:13,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:13,691 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2024-09-18 16:37:13,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-18 16:37:13,697 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:13,697 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:13,697 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-18 16:37:13,698 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:13,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:13,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1394897481, now seen corresponding path program 1 times [2024-09-18 16:37:13,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:13,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434142106] [2024-09-18 16:37:13,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:13,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:13,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:13,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:37:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:13,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-18 16:37:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:13,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:37:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 16:37:13,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:13,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434142106] [2024-09-18 16:37:13,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434142106] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:37:13,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051615679] [2024-09-18 16:37:13,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:13,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:13,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:37:13,941 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) [2024-09-18 16:37:13,943 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-18 16:37:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:14,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-18 16:37:14,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:37:14,087 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-18 16:37:14,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:37:14,210 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-18 16:37:14,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051615679] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:37:14,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:37:14,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2024-09-18 16:37:14,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880881497] [2024-09-18 16:37:14,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:37:14,213 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-18 16:37:14,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:14,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-18 16:37:14,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-09-18 16:37:14,217 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-18 16:37:14,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:14,441 INFO L93 Difference]: Finished difference Result 55 states and 86 transitions. [2024-09-18 16:37:14,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-18 16:37:14,443 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 29 [2024-09-18 16:37:14,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:14,445 INFO L225 Difference]: With dead ends: 55 [2024-09-18 16:37:14,445 INFO L226 Difference]: Without dead ends: 30 [2024-09-18 16:37:14,446 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-09-18 16:37:14,447 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:14,449 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 163 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 16:37:14,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-18 16:37:14,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-09-18 16:37:14,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-18 16:37:14,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-09-18 16:37:14,468 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 29 [2024-09-18 16:37:14,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:14,469 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-09-18 16:37:14,469 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-18 16:37:14,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:14,469 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-09-18 16:37:14,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-18 16:37:14,472 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:14,472 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:14,489 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-18 16:37:14,672 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:14,673 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:14,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:14,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1508818693, now seen corresponding path program 1 times [2024-09-18 16:37:14,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:14,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68540103] [2024-09-18 16:37:14,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:14,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:14,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:14,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:37:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:14,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:14,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-18 16:37:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:14,771 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-18 16:37:14,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:14,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68540103] [2024-09-18 16:37:14,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68540103] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 16:37:14,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 16:37:14,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 16:37:14,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217112621] [2024-09-18 16:37:14,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:37:14,774 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 16:37:14,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:14,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 16:37:14,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 16:37:14,775 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-18 16:37:14,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:14,846 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2024-09-18 16:37:14,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-18 16:37:14,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2024-09-18 16:37:14,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:14,848 INFO L225 Difference]: With dead ends: 34 [2024-09-18 16:37:14,848 INFO L226 Difference]: Without dead ends: 30 [2024-09-18 16:37:14,849 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-18 16:37:14,850 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:14,852 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 58 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 16:37:14,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-18 16:37:14,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-18 16:37:14,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-18 16:37:14,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-09-18 16:37:14,864 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 30 [2024-09-18 16:37:14,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:14,864 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-09-18 16:37:14,864 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-18 16:37:14,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:14,864 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-09-18 16:37:14,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-18 16:37:14,866 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:14,866 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:14,866 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-18 16:37:14,866 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:14,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:14,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1681162323, now seen corresponding path program 1 times [2024-09-18 16:37:14,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:14,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49162104] [2024-09-18 16:37:14,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:14,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:14,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:14,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:37:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:14,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:14,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-18 16:37:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:14,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:15,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:37:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:15,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:15,026 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-18 16:37:15,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:15,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49162104] [2024-09-18 16:37:15,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49162104] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:37:15,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119247605] [2024-09-18 16:37:15,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:15,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:15,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:37:15,032 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) [2024-09-18 16:37:15,034 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-18 16:37:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:15,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-18 16:37:15,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:37:15,151 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-18 16:37:15,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:37:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-09-18 16:37:15,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119247605] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:37:15,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:37:15,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2024-09-18 16:37:15,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113281643] [2024-09-18 16:37:15,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:37:15,370 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-18 16:37:15,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:15,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-18 16:37:15,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-09-18 16:37:15,371 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) [2024-09-18 16:37:15,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:15,461 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2024-09-18 16:37:15,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-18 16:37:15,462 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) Word has length 50 [2024-09-18 16:37:15,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:15,463 INFO L225 Difference]: With dead ends: 49 [2024-09-18 16:37:15,463 INFO L226 Difference]: Without dead ends: 23 [2024-09-18 16:37:15,464 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 108 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-09-18 16:37:15,465 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 10 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:15,467 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 111 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 16:37:15,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-18 16:37:15,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-18 16:37:15,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-18 16:37:15,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-09-18 16:37:15,475 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 50 [2024-09-18 16:37:15,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:15,475 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-09-18 16:37:15,475 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) [2024-09-18 16:37:15,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:15,476 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-09-18 16:37:15,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-18 16:37:15,476 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:15,477 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:15,494 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-18 16:37:15,677 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 [2024-09-18 16:37:15,678 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:15,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:15,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1570908093, now seen corresponding path program 2 times [2024-09-18 16:37:15,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:15,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192611556] [2024-09-18 16:37:15,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:15,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:15,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:15,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:37:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:15,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:15,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-18 16:37:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:16,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:16,143 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-18 16:37:16,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:16,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192611556] [2024-09-18 16:37:16,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192611556] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:37:16,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007715759] [2024-09-18 16:37:16,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 16:37:16,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:16,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:37:16,148 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) [2024-09-18 16:37:16,149 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-18 16:37:16,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 16:37:16,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:37:16,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-18 16:37:16,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:37:16,557 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-18 16:37:16,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:37:17,454 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-18 16:37:17,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007715759] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:37:17,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:37:17,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 40 [2024-09-18 16:37:17,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641174742] [2024-09-18 16:37:17,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:37:17,456 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-18 16:37:17,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:17,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-18 16:37:17,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2024-09-18 16:37:17,458 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 40 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 28 states have internal predecessors, (57), 8 states have call successors, (10), 1 states have call predecessors, (10), 11 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) [2024-09-18 16:37:17,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:17,735 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-09-18 16:37:17,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-18 16:37:17,735 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 28 states have internal predecessors, (57), 8 states have call successors, (10), 1 states have call predecessors, (10), 11 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) Word has length 37 [2024-09-18 16:37:17,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:17,736 INFO L225 Difference]: With dead ends: 34 [2024-09-18 16:37:17,737 INFO L226 Difference]: Without dead ends: 30 [2024-09-18 16:37:17,738 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=213, Invalid=1767, Unknown=0, NotChecked=0, Total=1980 [2024-09-18 16:37:17,738 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:17,739 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 186 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 16:37:17,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-18 16:37:17,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-09-18 16:37:17,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-18 16:37:17,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-09-18 16:37:17,747 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 37 [2024-09-18 16:37:17,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:17,747 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-09-18 16:37:17,747 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 28 states have internal predecessors, (57), 8 states have call successors, (10), 1 states have call predecessors, (10), 11 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) [2024-09-18 16:37:17,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:17,747 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-09-18 16:37:17,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-18 16:37:17,748 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:17,748 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:17,765 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-18 16:37:17,953 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 [2024-09-18 16:37:17,954 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:17,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:17,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1355077807, now seen corresponding path program 3 times [2024-09-18 16:37:17,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:17,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142517919] [2024-09-18 16:37:17,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:17,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:37:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-18 16:37:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-18 16:37:18,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:18,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142517919] [2024-09-18 16:37:18,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142517919] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:37:18,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255791251] [2024-09-18 16:37:18,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 16:37:18,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:18,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:37:18,447 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) [2024-09-18 16:37:18,449 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-18 16:37:18,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-18 16:37:18,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:37:18,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-09-18 16:37:18,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:37:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 29 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-18 16:37:18,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:37:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-18 16:37:19,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255791251] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:37:19,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:37:19,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 18] total 39 [2024-09-18 16:37:19,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653787805] [2024-09-18 16:37:19,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:37:19,541 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-18 16:37:19,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:19,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-18 16:37:19,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1366, Unknown=0, NotChecked=0, Total=1482 [2024-09-18 16:37:19,543 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 39 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 25 states have internal predecessors, (55), 8 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (15), 15 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-18 16:37:20,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:20,348 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2024-09-18 16:37:20,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-18 16:37:20,348 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 25 states have internal predecessors, (55), 8 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (15), 15 states have call predecessors, (15), 8 states have call successors, (15) Word has length 44 [2024-09-18 16:37:20,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:20,350 INFO L225 Difference]: With dead ends: 48 [2024-09-18 16:37:20,350 INFO L226 Difference]: Without dead ends: 40 [2024-09-18 16:37:20,354 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=326, Invalid=2866, Unknown=0, NotChecked=0, Total=3192 [2024-09-18 16:37:20,355 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 27 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:20,355 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 283 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-18 16:37:20,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-18 16:37:20,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2024-09-18 16:37:20,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-09-18 16:37:20,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2024-09-18 16:37:20,367 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 44 [2024-09-18 16:37:20,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:20,368 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2024-09-18 16:37:20,368 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 25 states have internal predecessors, (55), 8 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (15), 15 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-18 16:37:20,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:20,368 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2024-09-18 16:37:20,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-18 16:37:20,374 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:20,374 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:20,394 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-18 16:37:20,574 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 [2024-09-18 16:37:20,575 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:20,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:20,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1628773349, now seen corresponding path program 4 times [2024-09-18 16:37:20,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:20,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967618219] [2024-09-18 16:37:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:20,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:20,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:20,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:37:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:20,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:20,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:20,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-18 16:37:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,065 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-18 16:37:21,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:21,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967618219] [2024-09-18 16:37:21,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967618219] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:37:21,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082367822] [2024-09-18 16:37:21,066 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-18 16:37:21,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:21,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:37:21,068 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) [2024-09-18 16:37:21,070 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-18 16:37:21,115 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-18 16:37:21,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:37:21,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-09-18 16:37:21,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:37:21,497 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-18 16:37:21,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:37:22,240 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-18 16:37:22,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082367822] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:37:22,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:37:22,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 20] total 46 [2024-09-18 16:37:22,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834072285] [2024-09-18 16:37:22,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:37:22,242 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-18 16:37:22,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:22,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-18 16:37:22,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1895, Unknown=0, NotChecked=0, Total=2070 [2024-09-18 16:37:22,244 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 46 states, 43 states have (on average 1.5116279069767442) internal successors, (65), 31 states have internal predecessors, (65), 9 states have call successors, (11), 1 states have call predecessors, (11), 13 states have return successors, (16), 16 states have call predecessors, (16), 9 states have call successors, (16) [2024-09-18 16:37:22,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:22,976 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2024-09-18 16:37:22,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-18 16:37:22,976 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 1.5116279069767442) internal successors, (65), 31 states have internal predecessors, (65), 9 states have call successors, (11), 1 states have call predecessors, (11), 13 states have return successors, (16), 16 states have call predecessors, (16), 9 states have call successors, (16) Word has length 44 [2024-09-18 16:37:22,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:22,977 INFO L225 Difference]: With dead ends: 52 [2024-09-18 16:37:22,977 INFO L226 Difference]: Without dead ends: 44 [2024-09-18 16:37:22,979 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=421, Invalid=3485, Unknown=0, NotChecked=0, Total=3906 [2024-09-18 16:37:22,979 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:22,979 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 267 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-18 16:37:22,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-18 16:37:22,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2024-09-18 16:37:22,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2024-09-18 16:37:22,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2024-09-18 16:37:22,988 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 44 [2024-09-18 16:37:22,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:22,988 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2024-09-18 16:37:22,988 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 1.5116279069767442) internal successors, (65), 31 states have internal predecessors, (65), 9 states have call successors, (11), 1 states have call predecessors, (11), 13 states have return successors, (16), 16 states have call predecessors, (16), 9 states have call successors, (16) [2024-09-18 16:37:22,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:22,989 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2024-09-18 16:37:22,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-18 16:37:22,990 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:22,990 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:23,003 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-18 16:37:23,193 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 [2024-09-18 16:37:23,194 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:23,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:23,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1170996589, now seen corresponding path program 5 times [2024-09-18 16:37:23,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:23,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328717995] [2024-09-18 16:37:23,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:23,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:23,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:23,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:37:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:23,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:23,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-18 16:37:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:23,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:23,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:23,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:23,730 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 7 proven. 46 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-18 16:37:23,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:23,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328717995] [2024-09-18 16:37:23,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328717995] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:37:23,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006946507] [2024-09-18 16:37:23,731 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-18 16:37:23,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:23,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:37:23,733 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) [2024-09-18 16:37:23,736 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-18 16:37:23,785 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-18 16:37:23,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:37:23,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-09-18 16:37:23,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:37:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 22 proven. 41 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-18 16:37:24,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:37:25,463 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 8 proven. 64 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-18 16:37:25,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006946507] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:37:25,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:37:25,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 23] total 54 [2024-09-18 16:37:25,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60841425] [2024-09-18 16:37:25,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:37:25,464 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-18 16:37:25,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:25,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-18 16:37:25,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=2670, Unknown=0, NotChecked=0, Total=2862 [2024-09-18 16:37:25,466 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 54 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 36 states have internal predecessors, (75), 10 states have call successors, (12), 1 states have call predecessors, (12), 17 states have return successors, (19), 19 states have call predecessors, (19), 10 states have call successors, (19) [2024-09-18 16:37:26,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:26,523 INFO L93 Difference]: Finished difference Result 71 states and 96 transitions. [2024-09-18 16:37:26,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-18 16:37:26,524 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 36 states have internal predecessors, (75), 10 states have call successors, (12), 1 states have call predecessors, (12), 17 states have return successors, (19), 19 states have call predecessors, (19), 10 states have call successors, (19) Word has length 51 [2024-09-18 16:37:26,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:26,526 INFO L225 Difference]: With dead ends: 71 [2024-09-18 16:37:26,526 INFO L226 Difference]: Without dead ends: 65 [2024-09-18 16:37:26,528 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1138 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=523, Invalid=5027, Unknown=0, NotChecked=0, Total=5550 [2024-09-18 16:37:26,528 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 52 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:26,529 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 373 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-18 16:37:26,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-09-18 16:37:26,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2024-09-18 16:37:26,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 38 states have (on average 1.105263157894737) internal successors, (42), 39 states have internal predecessors, (42), 11 states have call successors, (11), 6 states have call predecessors, (11), 9 states have return successors, (27), 13 states have call predecessors, (27), 10 states have call successors, (27) [2024-09-18 16:37:26,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 80 transitions. [2024-09-18 16:37:26,559 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 80 transitions. Word has length 51 [2024-09-18 16:37:26,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:26,559 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 80 transitions. [2024-09-18 16:37:26,559 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 36 states have internal predecessors, (75), 10 states have call successors, (12), 1 states have call predecessors, (12), 17 states have return successors, (19), 19 states have call predecessors, (19), 10 states have call successors, (19) [2024-09-18 16:37:26,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:26,560 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 80 transitions. [2024-09-18 16:37:26,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-18 16:37:26,562 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:26,562 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:26,583 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-18 16:37:26,763 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 [2024-09-18 16:37:26,763 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:26,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:26,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1806313405, now seen corresponding path program 6 times [2024-09-18 16:37:26,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:26,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245033736] [2024-09-18 16:37:26,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:26,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:26,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:27,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:37:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:27,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:27,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:27,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:27,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-18 16:37:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:27,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:27,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:27,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:27,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:27,781 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 24 proven. 117 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-09-18 16:37:27,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:27,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245033736] [2024-09-18 16:37:27,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245033736] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:37:27,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816446664] [2024-09-18 16:37:27,782 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-18 16:37:27,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:27,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:37:27,784 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) [2024-09-18 16:37:27,785 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-18 16:37:27,848 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-18 16:37:27,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:37:27,851 WARN L260 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-09-18 16:37:27,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:37:28,500 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 4 proven. 106 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-18 16:37:28,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:37:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 29 proven. 153 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-18 16:37:30,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816446664] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:37:30,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:37:30,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 18, 30] total 61 [2024-09-18 16:37:30,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039299137] [2024-09-18 16:37:30,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:37:30,074 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-09-18 16:37:30,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:30,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-09-18 16:37:30,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=3432, Unknown=0, NotChecked=0, Total=3660 [2024-09-18 16:37:30,077 INFO L87 Difference]: Start difference. First operand 59 states and 80 transitions. Second operand has 61 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 38 states have internal predecessors, (82), 13 states have call successors, (15), 1 states have call predecessors, (15), 18 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) [2024-09-18 16:37:31,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:31,440 INFO L93 Difference]: Finished difference Result 81 states and 113 transitions. [2024-09-18 16:37:31,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-18 16:37:31,440 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 38 states have internal predecessors, (82), 13 states have call successors, (15), 1 states have call predecessors, (15), 18 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) Word has length 72 [2024-09-18 16:37:31,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:31,442 INFO L225 Difference]: With dead ends: 81 [2024-09-18 16:37:31,442 INFO L226 Difference]: Without dead ends: 71 [2024-09-18 16:37:31,444 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1445 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=638, Invalid=6502, Unknown=0, NotChecked=0, Total=7140 [2024-09-18 16:37:31,444 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 50 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:31,445 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 503 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-18 16:37:31,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-18 16:37:31,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 60. [2024-09-18 16:37:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 40 states have internal predecessors, (43), 10 states have call successors, (10), 6 states have call predecessors, (10), 10 states have return successors, (26), 13 states have call predecessors, (26), 9 states have call successors, (26) [2024-09-18 16:37:31,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-09-18 16:37:31,462 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 72 [2024-09-18 16:37:31,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:31,462 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-09-18 16:37:31,463 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 38 states have internal predecessors, (82), 13 states have call successors, (15), 1 states have call predecessors, (15), 18 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) [2024-09-18 16:37:31,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:31,463 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2024-09-18 16:37:31,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-09-18 16:37:31,464 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:31,464 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:31,481 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-18 16:37:31,668 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 [2024-09-18 16:37:31,669 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:31,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:31,669 INFO L85 PathProgramCache]: Analyzing trace with hash 240502641, now seen corresponding path program 7 times [2024-09-18 16:37:31,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:31,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726767045] [2024-09-18 16:37:31,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:31,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:31,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:31,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:37:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:32,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:32,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:32,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:32,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:32,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-18 16:37:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:32,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:32,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:32,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:32,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:32,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:33,046 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 178 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-09-18 16:37:33,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:33,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726767045] [2024-09-18 16:37:33,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726767045] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:37:33,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411848674] [2024-09-18 16:37:33,047 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-18 16:37:33,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:33,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:37:33,049 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) [2024-09-18 16:37:33,050 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-18 16:37:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:33,129 WARN L260 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-09-18 16:37:33,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:37:33,841 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 5 proven. 163 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-09-18 16:37:33,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:37:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 38 proven. 250 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-09-18 16:37:35,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411848674] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:37:35,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:37:35,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 20, 36] total 72 [2024-09-18 16:37:35,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107028291] [2024-09-18 16:37:35,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:37:35,941 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-18 16:37:35,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:35,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-18 16:37:35,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=4838, Unknown=0, NotChecked=0, Total=5112 [2024-09-18 16:37:35,943 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand has 72 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 44 states have internal predecessors, (97), 15 states have call successors, (17), 1 states have call predecessors, (17), 22 states have return successors, (30), 29 states have call predecessors, (30), 15 states have call successors, (30) [2024-09-18 16:37:37,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:37,797 INFO L93 Difference]: Finished difference Result 87 states and 123 transitions. [2024-09-18 16:37:37,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-18 16:37:37,798 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 44 states have internal predecessors, (97), 15 states have call successors, (17), 1 states have call predecessors, (17), 22 states have return successors, (30), 29 states have call predecessors, (30), 15 states have call successors, (30) Word has length 86 [2024-09-18 16:37:37,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:37,799 INFO L225 Difference]: With dead ends: 87 [2024-09-18 16:37:37,800 INFO L226 Difference]: Without dead ends: 74 [2024-09-18 16:37:37,802 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2051 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=813, Invalid=9287, Unknown=0, NotChecked=0, Total=10100 [2024-09-18 16:37:37,803 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 74 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 2306 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 2368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:37,803 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 683 Invalid, 2368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2306 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-18 16:37:37,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-18 16:37:37,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63. [2024-09-18 16:37:37,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 42 states have internal predecessors, (45), 10 states have call successors, (10), 6 states have call predecessors, (10), 11 states have return successors, (29), 14 states have call predecessors, (29), 9 states have call successors, (29) [2024-09-18 16:37:37,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 84 transitions. [2024-09-18 16:37:37,822 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 84 transitions. Word has length 86 [2024-09-18 16:37:37,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:37,822 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 84 transitions. [2024-09-18 16:37:37,823 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 44 states have internal predecessors, (97), 15 states have call successors, (17), 1 states have call predecessors, (17), 22 states have return successors, (30), 29 states have call predecessors, (30), 15 states have call successors, (30) [2024-09-18 16:37:37,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:37,823 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 84 transitions. [2024-09-18 16:37:37,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-18 16:37:37,824 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:37,824 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:37,837 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-18 16:37:38,026 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 [2024-09-18 16:37:38,026 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:38,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:38,027 INFO L85 PathProgramCache]: Analyzing trace with hash -879054875, now seen corresponding path program 8 times [2024-09-18 16:37:38,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:38,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915928632] [2024-09-18 16:37:38,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:38,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:38,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:38,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:37:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:38,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:38,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:38,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-18 16:37:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:38,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:38,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:38,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:39,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:39,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:39,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 28 proven. 146 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-09-18 16:37:39,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:39,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915928632] [2024-09-18 16:37:39,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915928632] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:37:39,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818734205] [2024-09-18 16:37:39,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 16:37:39,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:39,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:37:39,235 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) [2024-09-18 16:37:39,237 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-18 16:37:39,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 16:37:39,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:37:39,307 WARN L260 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-09-18 16:37:39,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:37:39,939 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 6 proven. 136 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-09-18 16:37:39,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:37:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 29 proven. 203 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-18 16:37:41,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818734205] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:37:41,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:37:41,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 33] total 68 [2024-09-18 16:37:41,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761294464] [2024-09-18 16:37:41,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:37:41,601 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-18 16:37:41,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:41,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-18 16:37:41,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=4308, Unknown=0, NotChecked=0, Total=4556 [2024-09-18 16:37:41,604 INFO L87 Difference]: Start difference. First operand 63 states and 84 transitions. Second operand has 68 states, 64 states have (on average 1.421875) internal successors, (91), 41 states have internal predecessors, (91), 14 states have call successors, (16), 1 states have call predecessors, (16), 20 states have return successors, (29), 28 states have call predecessors, (29), 14 states have call successors, (29) [2024-09-18 16:37:42,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:42,959 INFO L93 Difference]: Finished difference Result 84 states and 117 transitions. [2024-09-18 16:37:42,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-18 16:37:42,959 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 64 states have (on average 1.421875) internal successors, (91), 41 states have internal predecessors, (91), 14 states have call successors, (16), 1 states have call predecessors, (16), 20 states have return successors, (29), 28 states have call predecessors, (29), 14 states have call successors, (29) Word has length 79 [2024-09-18 16:37:42,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:42,960 INFO L225 Difference]: With dead ends: 84 [2024-09-18 16:37:42,960 INFO L226 Difference]: Without dead ends: 77 [2024-09-18 16:37:42,963 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1795 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=655, Invalid=7901, Unknown=0, NotChecked=0, Total=8556 [2024-09-18 16:37:42,963 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 63 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1909 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:42,963 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 681 Invalid, 2011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1909 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-18 16:37:42,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-18 16:37:42,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 66. [2024-09-18 16:37:42,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 44 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 12 states have return successors, (32), 15 states have call predecessors, (32), 9 states have call successors, (32) [2024-09-18 16:37:42,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 89 transitions. [2024-09-18 16:37:42,984 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 89 transitions. Word has length 79 [2024-09-18 16:37:42,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:42,984 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 89 transitions. [2024-09-18 16:37:42,984 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 64 states have (on average 1.421875) internal successors, (91), 41 states have internal predecessors, (91), 14 states have call successors, (16), 1 states have call predecessors, (16), 20 states have return successors, (29), 28 states have call predecessors, (29), 14 states have call successors, (29) [2024-09-18 16:37:42,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:42,985 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 89 transitions. [2024-09-18 16:37:42,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-09-18 16:37:42,986 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:42,986 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:43,001 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-18 16:37:43,186 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 [2024-09-18 16:37:43,187 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:43,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:43,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1998053917, now seen corresponding path program 9 times [2024-09-18 16:37:43,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:43,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479631227] [2024-09-18 16:37:43,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:43,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:43,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:43,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:37:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:43,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:43,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:43,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-18 16:37:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:43,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:44,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:44,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:44,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:44,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:44,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:44,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:44,601 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 178 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-09-18 16:37:44,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:44,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479631227] [2024-09-18 16:37:44,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479631227] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:37:44,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786231790] [2024-09-18 16:37:44,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 16:37:44,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:44,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:37:44,603 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) [2024-09-18 16:37:44,605 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-18 16:37:44,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-09-18 16:37:44,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:37:44,691 WARN L260 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-09-18 16:37:44,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:37:45,385 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 7 proven. 167 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-09-18 16:37:45,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:37:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 256 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-09-18 16:37:47,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786231790] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:37:47,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:37:47,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24, 36] total 74 [2024-09-18 16:37:47,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132838722] [2024-09-18 16:37:47,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:37:47,412 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-18 16:37:47,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:47,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-18 16:37:47,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=5132, Unknown=0, NotChecked=0, Total=5402 [2024-09-18 16:37:47,414 INFO L87 Difference]: Start difference. First operand 66 states and 89 transitions. Second operand has 74 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 44 states have internal predecessors, (99), 15 states have call successors, (17), 1 states have call predecessors, (17), 22 states have return successors, (32), 31 states have call predecessors, (32), 15 states have call successors, (32) [2024-09-18 16:37:48,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:48,840 INFO L93 Difference]: Finished difference Result 87 states and 122 transitions. [2024-09-18 16:37:48,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-18 16:37:48,841 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 44 states have internal predecessors, (99), 15 states have call successors, (17), 1 states have call predecessors, (17), 22 states have return successors, (32), 31 states have call predecessors, (32), 15 states have call successors, (32) Word has length 86 [2024-09-18 16:37:48,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:48,842 INFO L225 Difference]: With dead ends: 87 [2024-09-18 16:37:48,842 INFO L226 Difference]: Without dead ends: 80 [2024-09-18 16:37:48,843 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2128 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=736, Invalid=9364, Unknown=0, NotChecked=0, Total=10100 [2024-09-18 16:37:48,844 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 94 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:48,844 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 612 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1783 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-18 16:37:48,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-18 16:37:48,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2024-09-18 16:37:48,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 46 states have internal predecessors, (49), 10 states have call successors, (10), 6 states have call predecessors, (10), 13 states have return successors, (35), 16 states have call predecessors, (35), 9 states have call successors, (35) [2024-09-18 16:37:48,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 94 transitions. [2024-09-18 16:37:48,868 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 94 transitions. Word has length 86 [2024-09-18 16:37:48,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:48,868 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 94 transitions. [2024-09-18 16:37:48,868 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 44 states have internal predecessors, (99), 15 states have call successors, (17), 1 states have call predecessors, (17), 22 states have return successors, (32), 31 states have call predecessors, (32), 15 states have call successors, (32) [2024-09-18 16:37:48,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:48,869 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 94 transitions. [2024-09-18 16:37:48,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-18 16:37:48,870 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:48,870 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:48,883 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-18 16:37:49,070 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 [2024-09-18 16:37:49,070 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:49,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:49,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1103674431, now seen corresponding path program 10 times [2024-09-18 16:37:49,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:49,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310357558] [2024-09-18 16:37:49,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:49,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:49,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:49,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:37:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:49,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:49,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:49,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:49,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:49,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:49,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-18 16:37:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:49,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:49,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:50,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 26 proven. 148 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-09-18 16:37:50,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:50,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310357558] [2024-09-18 16:37:50,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310357558] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:37:50,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873463889] [2024-09-18 16:37:50,115 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-18 16:37:50,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:50,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:37:50,117 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) [2024-09-18 16:37:50,118 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-18 16:37:50,193 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-18 16:37:50,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:37:50,197 WARN L260 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-09-18 16:37:50,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:37:50,780 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 3 proven. 136 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-09-18 16:37:50,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:37:52,548 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 29 proven. 203 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-18 16:37:52,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873463889] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:37:52,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:37:52,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 20, 33] total 69 [2024-09-18 16:37:52,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965324088] [2024-09-18 16:37:52,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:37:52,549 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-09-18 16:37:52,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:52,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-09-18 16:37:52,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=4429, Unknown=0, NotChecked=0, Total=4692 [2024-09-18 16:37:52,550 INFO L87 Difference]: Start difference. First operand 69 states and 94 transitions. Second operand has 69 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 43 states have internal predecessors, (92), 14 states have call successors, (16), 1 states have call predecessors, (16), 22 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) [2024-09-18 16:37:53,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:53,872 INFO L93 Difference]: Finished difference Result 91 states and 127 transitions. [2024-09-18 16:37:53,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-18 16:37:53,872 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 43 states have internal predecessors, (92), 14 states have call successors, (16), 1 states have call predecessors, (16), 22 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) Word has length 79 [2024-09-18 16:37:53,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:53,873 INFO L225 Difference]: With dead ends: 91 [2024-09-18 16:37:53,873 INFO L226 Difference]: Without dead ends: 78 [2024-09-18 16:37:53,875 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1856 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=757, Invalid=8173, Unknown=0, NotChecked=0, Total=8930 [2024-09-18 16:37:53,875 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 54 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:53,875 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 596 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-18 16:37:53,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-18 16:37:53,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2024-09-18 16:37:53,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 46 states have internal predecessors, (49), 10 states have call successors, (10), 6 states have call predecessors, (10), 13 states have return successors, (34), 16 states have call predecessors, (34), 9 states have call successors, (34) [2024-09-18 16:37:53,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 93 transitions. [2024-09-18 16:37:53,893 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 93 transitions. Word has length 79 [2024-09-18 16:37:53,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:53,894 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 93 transitions. [2024-09-18 16:37:53,894 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 43 states have internal predecessors, (92), 14 states have call successors, (16), 1 states have call predecessors, (16), 22 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) [2024-09-18 16:37:53,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:53,894 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 93 transitions. [2024-09-18 16:37:53,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-18 16:37:53,895 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:53,895 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:53,912 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-18 16:37:54,099 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 [2024-09-18 16:37:54,100 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:54,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:54,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1404959985, now seen corresponding path program 11 times [2024-09-18 16:37:54,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:54,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833874901] [2024-09-18 16:37:54,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:54,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:54,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:54,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:37:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:54,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:54,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:54,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-18 16:37:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:54,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:54,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:55,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:55,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:55,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:55,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:55,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:55,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 36 proven. 213 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-09-18 16:37:55,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:55,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833874901] [2024-09-18 16:37:55,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833874901] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:37:55,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263105665] [2024-09-18 16:37:55,726 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-18 16:37:55,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:55,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:37:55,728 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) [2024-09-18 16:37:55,730 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-18 16:37:55,803 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-09-18 16:37:55,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:37:55,807 WARN L260 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-09-18 16:37:55,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:37:56,617 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 17 proven. 193 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-09-18 16:37:56,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:37:58,943 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 36 proven. 315 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-09-18 16:37:58,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263105665] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:37:58,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:37:58,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 26, 39] total 80 [2024-09-18 16:37:58,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33191891] [2024-09-18 16:37:58,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:37:58,944 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-09-18 16:37:58,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:58,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-09-18 16:37:58,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=6028, Unknown=0, NotChecked=0, Total=6320 [2024-09-18 16:37:58,946 INFO L87 Difference]: Start difference. First operand 69 states and 93 transitions. Second operand has 80 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 47 states have internal predecessors, (110), 16 states have call successors, (18), 1 states have call predecessors, (18), 24 states have return successors, (35), 34 states have call predecessors, (35), 16 states have call successors, (35) [2024-09-18 16:38:00,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:38:00,759 INFO L93 Difference]: Finished difference Result 88 states and 124 transitions. [2024-09-18 16:38:00,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-18 16:38:00,759 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 47 states have internal predecessors, (110), 16 states have call successors, (18), 1 states have call predecessors, (18), 24 states have return successors, (35), 34 states have call predecessors, (35), 16 states have call successors, (35) Word has length 93 [2024-09-18 16:38:00,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:38:00,760 INFO L225 Difference]: With dead ends: 88 [2024-09-18 16:38:00,760 INFO L226 Difference]: Without dead ends: 81 [2024-09-18 16:38:00,762 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2427 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=817, Invalid=10739, Unknown=0, NotChecked=0, Total=11556 [2024-09-18 16:38:00,762 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 124 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 2451 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-18 16:38:00,763 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 859 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2451 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-18 16:38:00,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-09-18 16:38:00,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 72. [2024-09-18 16:38:00,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 48 states have internal predecessors, (51), 10 states have call successors, (10), 6 states have call predecessors, (10), 14 states have return successors, (37), 17 states have call predecessors, (37), 9 states have call successors, (37) [2024-09-18 16:38:00,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 98 transitions. [2024-09-18 16:38:00,783 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 98 transitions. Word has length 93 [2024-09-18 16:38:00,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:38:00,784 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 98 transitions. [2024-09-18 16:38:00,784 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 47 states have internal predecessors, (110), 16 states have call successors, (18), 1 states have call predecessors, (18), 24 states have return successors, (35), 34 states have call predecessors, (35), 16 states have call successors, (35) [2024-09-18 16:38:00,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:38:00,784 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 98 transitions. [2024-09-18 16:38:00,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-09-18 16:38:00,786 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:38:00,786 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:38:00,803 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-18 16:38:00,986 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 [2024-09-18 16:38:00,987 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:38:00,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:38:00,987 INFO L85 PathProgramCache]: Analyzing trace with hash -307076237, now seen corresponding path program 12 times [2024-09-18 16:38:00,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:38:00,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521786320] [2024-09-18 16:38:00,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:38:00,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:38:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:01,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:38:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:01,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:38:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:01,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:01,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:01,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-18 16:38:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:01,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:01,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:02,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:02,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:02,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:02,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:02,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:02,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:02,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:02,645 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 40 proven. 251 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-09-18 16:38:02,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:38:02,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521786320] [2024-09-18 16:38:02,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521786320] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:38:02,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908882383] [2024-09-18 16:38:02,645 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-18 16:38:02,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:38:02,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:38:02,647 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) [2024-09-18 16:38:02,655 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-18 16:38:02,741 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-09-18 16:38:02,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:38:02,744 WARN L260 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 157 conjuncts are in the unsatisfiable core [2024-09-18 16:38:02,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:38:03,646 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 19 proven. 229 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-09-18 16:38:03,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:38:06,378 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 39 proven. 380 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-09-18 16:38:06,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908882383] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:38:06,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:38:06,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 28, 42] total 86 [2024-09-18 16:38:06,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111809068] [2024-09-18 16:38:06,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:38:06,379 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-18 16:38:06,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:38:06,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-18 16:38:06,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=6996, Unknown=0, NotChecked=0, Total=7310 [2024-09-18 16:38:06,381 INFO L87 Difference]: Start difference. First operand 72 states and 98 transitions. Second operand has 86 states, 82 states have (on average 1.4390243902439024) internal successors, (118), 50 states have internal predecessors, (118), 17 states have call successors, (19), 1 states have call predecessors, (19), 26 states have return successors, (38), 37 states have call predecessors, (38), 17 states have call successors, (38) [2024-09-18 16:38:08,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:38:08,155 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2024-09-18 16:38:08,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-18 16:38:08,155 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 82 states have (on average 1.4390243902439024) internal successors, (118), 50 states have internal predecessors, (118), 17 states have call successors, (19), 1 states have call predecessors, (19), 26 states have return successors, (38), 37 states have call predecessors, (38), 17 states have call successors, (38) Word has length 100 [2024-09-18 16:38:08,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:38:08,156 INFO L225 Difference]: With dead ends: 91 [2024-09-18 16:38:08,156 INFO L226 Difference]: Without dead ends: 84 [2024-09-18 16:38:08,158 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2813 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=906, Invalid=12434, Unknown=0, NotChecked=0, Total=13340 [2024-09-18 16:38:08,158 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 147 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 2303 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 2465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-18 16:38:08,159 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 756 Invalid, 2465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2303 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-18 16:38:08,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-09-18 16:38:08,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 75. [2024-09-18 16:38:08,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 50 states have internal predecessors, (53), 10 states have call successors, (10), 6 states have call predecessors, (10), 15 states have return successors, (40), 18 states have call predecessors, (40), 9 states have call successors, (40) [2024-09-18 16:38:08,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 103 transitions. [2024-09-18 16:38:08,181 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 103 transitions. Word has length 100 [2024-09-18 16:38:08,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:38:08,181 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 103 transitions. [2024-09-18 16:38:08,181 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 82 states have (on average 1.4390243902439024) internal successors, (118), 50 states have internal predecessors, (118), 17 states have call successors, (19), 1 states have call predecessors, (19), 26 states have return successors, (38), 37 states have call predecessors, (38), 17 states have call successors, (38) [2024-09-18 16:38:08,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:38:08,182 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 103 transitions. [2024-09-18 16:38:08,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-09-18 16:38:08,182 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:38:08,183 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:38:08,195 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-18 16:38:08,383 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 [2024-09-18 16:38:08,383 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:38:08,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:38:08,383 INFO L85 PathProgramCache]: Analyzing trace with hash 179440229, now seen corresponding path program 13 times [2024-09-18 16:38:08,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:38:08,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042499924] [2024-09-18 16:38:08,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:38:08,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:38:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:08,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:38:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:08,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:38:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:08,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:09,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:09,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:09,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:09,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:09,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:09,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-18 16:38:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:09,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:09,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:09,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:10,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:10,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:10,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:10,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:10,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:10,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:10,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:10,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 60 proven. 486 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-09-18 16:38:10,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:38:10,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042499924] [2024-09-18 16:38:10,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042499924] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:38:10,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027453152] [2024-09-18 16:38:10,891 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-18 16:38:10,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:38:10,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:38:10,893 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) [2024-09-18 16:38:10,895 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-18 16:38:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:11,002 WARN L260 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 217 conjuncts are in the unsatisfiable core [2024-09-18 16:38:11,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:38:12,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 10 proven. 460 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2024-09-18 16:38:12,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:38:17,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 65 proven. 783 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-09-18 16:38:17,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027453152] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:38:17,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:38:17,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 30, 57] total 112 [2024-09-18 16:38:17,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168505321] [2024-09-18 16:38:17,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:38:17,230 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2024-09-18 16:38:17,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:38:17,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2024-09-18 16:38:17,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=12000, Unknown=0, NotChecked=0, Total=12432 [2024-09-18 16:38:17,233 INFO L87 Difference]: Start difference. First operand 75 states and 103 transitions. Second operand has 112 states, 108 states have (on average 1.3981481481481481) internal successors, (151), 65 states have internal predecessors, (151), 22 states have call successors, (24), 1 states have call predecessors, (24), 36 states have return successors, (49), 48 states have call predecessors, (49), 22 states have call successors, (49) [2024-09-18 16:38:20,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:38:20,832 INFO L93 Difference]: Finished difference Result 103 states and 152 transitions. [2024-09-18 16:38:20,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-18 16:38:20,832 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 108 states have (on average 1.3981481481481481) internal successors, (151), 65 states have internal predecessors, (151), 22 states have call successors, (24), 1 states have call predecessors, (24), 36 states have return successors, (49), 48 states have call predecessors, (49), 22 states have call successors, (49) Word has length 135 [2024-09-18 16:38:20,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:38:20,834 INFO L225 Difference]: With dead ends: 103 [2024-09-18 16:38:20,834 INFO L226 Difference]: Without dead ends: 87 [2024-09-18 16:38:20,836 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4710 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1564, Invalid=21692, Unknown=0, NotChecked=0, Total=23256 [2024-09-18 16:38:20,836 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 145 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 5044 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 5208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 5044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:38:20,837 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 1395 Invalid, 5208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 5044 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-09-18 16:38:20,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-09-18 16:38:20,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 78. [2024-09-18 16:38:20,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 52 states have internal predecessors, (55), 10 states have call successors, (10), 6 states have call predecessors, (10), 16 states have return successors, (43), 19 states have call predecessors, (43), 9 states have call successors, (43) [2024-09-18 16:38:20,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 108 transitions. [2024-09-18 16:38:20,862 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 108 transitions. Word has length 135 [2024-09-18 16:38:20,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:38:20,862 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 108 transitions. [2024-09-18 16:38:20,863 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 108 states have (on average 1.3981481481481481) internal successors, (151), 65 states have internal predecessors, (151), 22 states have call successors, (24), 1 states have call predecessors, (24), 36 states have return successors, (49), 48 states have call predecessors, (49), 22 states have call successors, (49) [2024-09-18 16:38:20,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:38:20,863 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 108 transitions. [2024-09-18 16:38:20,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-09-18 16:38:20,864 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:38:20,864 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:38:20,882 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-18 16:38:21,064 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 [2024-09-18 16:38:21,065 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:38:21,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:38:21,065 INFO L85 PathProgramCache]: Analyzing trace with hash -395770423, now seen corresponding path program 14 times [2024-09-18 16:38:21,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:38:21,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102454115] [2024-09-18 16:38:21,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:38:21,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:38:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:21,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:38:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:21,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:38:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:21,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:21,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:21,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-18 16:38:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:21,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:21,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:22,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:22,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:22,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:22,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:22,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:22,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:23,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:23,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:23,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:23,339 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 48 proven. 336 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-09-18 16:38:23,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:38:23,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102454115] [2024-09-18 16:38:23,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102454115] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:38:23,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256450208] [2024-09-18 16:38:23,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 16:38:23,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:38:23,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:38:23,342 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) [2024-09-18 16:38:23,343 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-18 16:38:23,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 16:38:23,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:38:23,460 WARN L260 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 181 conjuncts are in the unsatisfiable core [2024-09-18 16:38:23,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:38:24,838 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 11 proven. 321 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-09-18 16:38:24,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:38:28,468 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 44 proven. 528 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-09-18 16:38:28,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256450208] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:38:28,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:38:28,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 32, 48] total 98 [2024-09-18 16:38:28,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95037430] [2024-09-18 16:38:28,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:38:28,469 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-09-18 16:38:28,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:38:28,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-09-18 16:38:28,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=9148, Unknown=0, NotChecked=0, Total=9506 [2024-09-18 16:38:28,471 INFO L87 Difference]: Start difference. First operand 78 states and 108 transitions. Second operand has 98 states, 94 states have (on average 1.3936170212765957) internal successors, (131), 56 states have internal predecessors, (131), 19 states have call successors, (21), 1 states have call predecessors, (21), 30 states have return successors, (44), 43 states have call predecessors, (44), 19 states have call successors, (44) [2024-09-18 16:38:30,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:38:30,992 INFO L93 Difference]: Finished difference Result 97 states and 139 transitions. [2024-09-18 16:38:30,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-18 16:38:30,992 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 94 states have (on average 1.3936170212765957) internal successors, (131), 56 states have internal predecessors, (131), 19 states have call successors, (21), 1 states have call predecessors, (21), 30 states have return successors, (44), 43 states have call predecessors, (44), 19 states have call successors, (44) Word has length 114 [2024-09-18 16:38:30,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:38:30,994 INFO L225 Difference]: With dead ends: 97 [2024-09-18 16:38:30,994 INFO L226 Difference]: Without dead ends: 90 [2024-09-18 16:38:30,995 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3674 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1096, Invalid=16196, Unknown=0, NotChecked=0, Total=17292 [2024-09-18 16:38:30,996 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 166 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 3688 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 3919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 3688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-09-18 16:38:30,996 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 1235 Invalid, 3919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 3688 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-09-18 16:38:30,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-09-18 16:38:31,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 81. [2024-09-18 16:38:31,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 54 states have internal predecessors, (57), 10 states have call successors, (10), 6 states have call predecessors, (10), 17 states have return successors, (46), 20 states have call predecessors, (46), 9 states have call successors, (46) [2024-09-18 16:38:31,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 113 transitions. [2024-09-18 16:38:31,021 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 113 transitions. Word has length 114 [2024-09-18 16:38:31,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:38:31,021 INFO L474 AbstractCegarLoop]: Abstraction has 81 states and 113 transitions. [2024-09-18 16:38:31,021 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 94 states have (on average 1.3936170212765957) internal successors, (131), 56 states have internal predecessors, (131), 19 states have call successors, (21), 1 states have call predecessors, (21), 30 states have return successors, (44), 43 states have call predecessors, (44), 19 states have call successors, (44) [2024-09-18 16:38:31,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:38:31,022 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 113 transitions. [2024-09-18 16:38:31,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-18 16:38:31,023 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:38:31,023 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:38:31,037 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-18 16:38:31,223 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 [2024-09-18 16:38:31,223 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:38:31,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:38:31,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1084266083, now seen corresponding path program 15 times [2024-09-18 16:38:31,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:38:31,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854878294] [2024-09-18 16:38:31,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:38:31,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:38:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:31,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:38:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:31,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:38:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:31,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:31,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:31,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-18 16:38:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:31,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:32,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:32,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:32,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:32,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:33,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:33,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:33,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:33,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:33,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:33,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:33,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:33,659 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 52 proven. 383 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-09-18 16:38:33,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:38:33,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854878294] [2024-09-18 16:38:33,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854878294] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:38:33,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575607960] [2024-09-18 16:38:33,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 16:38:33,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:38:33,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:38:33,661 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) [2024-09-18 16:38:33,662 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-18 16:38:33,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-18 16:38:33,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:38:33,778 WARN L260 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 193 conjuncts are in the unsatisfiable core [2024-09-18 16:38:33,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:38:35,075 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 12 proven. 367 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2024-09-18 16:38:35,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:38:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 47 proven. 611 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-09-18 16:38:39,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575607960] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:38:39,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:38:39,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 34, 51] total 104 [2024-09-18 16:38:39,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916021936] [2024-09-18 16:38:39,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:38:39,438 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-09-18 16:38:39,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:38:39,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-09-18 16:38:39,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=10332, Unknown=0, NotChecked=0, Total=10712 [2024-09-18 16:38:39,440 INFO L87 Difference]: Start difference. First operand 81 states and 113 transitions. Second operand has 104 states, 100 states have (on average 1.39) internal successors, (139), 59 states have internal predecessors, (139), 20 states have call successors, (22), 1 states have call predecessors, (22), 32 states have return successors, (47), 46 states have call predecessors, (47), 20 states have call successors, (47) [2024-09-18 16:38:42,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:38:42,152 INFO L93 Difference]: Finished difference Result 100 states and 144 transitions. [2024-09-18 16:38:42,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-18 16:38:42,153 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 100 states have (on average 1.39) internal successors, (139), 59 states have internal predecessors, (139), 20 states have call successors, (22), 1 states have call predecessors, (22), 32 states have return successors, (47), 46 states have call predecessors, (47), 20 states have call successors, (47) Word has length 121 [2024-09-18 16:38:42,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:38:42,154 INFO L225 Difference]: With dead ends: 100 [2024-09-18 16:38:42,154 INFO L226 Difference]: Without dead ends: 93 [2024-09-18 16:38:42,156 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4143 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1197, Invalid=18263, Unknown=0, NotChecked=0, Total=19460 [2024-09-18 16:38:42,157 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 240 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 3669 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 3875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 3669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-09-18 16:38:42,157 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1128 Invalid, 3875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 3669 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-09-18 16:38:42,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-18 16:38:42,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2024-09-18 16:38:42,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 56 states have internal predecessors, (59), 10 states have call successors, (10), 6 states have call predecessors, (10), 18 states have return successors, (49), 21 states have call predecessors, (49), 9 states have call successors, (49) [2024-09-18 16:38:42,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 118 transitions. [2024-09-18 16:38:42,184 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 118 transitions. Word has length 121 [2024-09-18 16:38:42,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:38:42,185 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 118 transitions. [2024-09-18 16:38:42,185 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 100 states have (on average 1.39) internal successors, (139), 59 states have internal predecessors, (139), 20 states have call successors, (22), 1 states have call predecessors, (22), 32 states have return successors, (47), 46 states have call predecessors, (47), 20 states have call successors, (47) [2024-09-18 16:38:42,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:38:42,185 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 118 transitions. [2024-09-18 16:38:42,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-18 16:38:42,186 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:38:42,186 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 15, 15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:38:42,198 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-18 16:38:42,386 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 [2024-09-18 16:38:42,387 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:38:42,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:38:42,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1846777569, now seen corresponding path program 16 times [2024-09-18 16:38:42,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:38:42,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111822652] [2024-09-18 16:38:42,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:38:42,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:38:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:42,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:38:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:42,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:38:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:42,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:42,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:42,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-18 16:38:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:43,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:43,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:43,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:44,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:44,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:44,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:44,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:44,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:44,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:44,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:45,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:45,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:45,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:45,360 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 56 proven. 433 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2024-09-18 16:38:45,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:38:45,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111822652] [2024-09-18 16:38:45,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111822652] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:38:45,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330127144] [2024-09-18 16:38:45,361 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-18 16:38:45,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:38:45,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:38:45,362 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) [2024-09-18 16:38:45,363 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-18 16:38:45,481 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-18 16:38:45,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:38:45,483 WARN L260 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 205 conjuncts are in the unsatisfiable core [2024-09-18 16:38:45,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:38:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 13 proven. 416 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2024-09-18 16:38:46,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:38:51,689 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 50 proven. 700 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-09-18 16:38:51,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330127144] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:38:51,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:38:51,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 36, 54] total 110 [2024-09-18 16:38:51,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471087802] [2024-09-18 16:38:51,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:38:51,690 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2024-09-18 16:38:51,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:38:51,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2024-09-18 16:38:51,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=11588, Unknown=0, NotChecked=0, Total=11990 [2024-09-18 16:38:51,691 INFO L87 Difference]: Start difference. First operand 84 states and 118 transitions. Second operand has 110 states, 106 states have (on average 1.3867924528301887) internal successors, (147), 62 states have internal predecessors, (147), 21 states have call successors, (23), 1 states have call predecessors, (23), 34 states have return successors, (50), 49 states have call predecessors, (50), 21 states have call successors, (50) [2024-09-18 16:38:54,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:38:54,754 INFO L93 Difference]: Finished difference Result 103 states and 149 transitions. [2024-09-18 16:38:54,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-18 16:38:54,754 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 106 states have (on average 1.3867924528301887) internal successors, (147), 62 states have internal predecessors, (147), 21 states have call successors, (23), 1 states have call predecessors, (23), 34 states have return successors, (50), 49 states have call predecessors, (50), 21 states have call successors, (50) Word has length 128 [2024-09-18 16:38:54,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:38:54,755 INFO L225 Difference]: With dead ends: 103 [2024-09-18 16:38:54,755 INFO L226 Difference]: Without dead ends: 96 [2024-09-18 16:38:54,757 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4639 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1302, Invalid=20454, Unknown=0, NotChecked=0, Total=21756 [2024-09-18 16:38:54,758 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 215 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 4038 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 4285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 4038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-09-18 16:38:54,758 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1299 Invalid, 4285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 4038 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-09-18 16:38:54,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-18 16:38:54,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 87. [2024-09-18 16:38:54,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 58 states have internal predecessors, (61), 10 states have call successors, (10), 6 states have call predecessors, (10), 19 states have return successors, (52), 22 states have call predecessors, (52), 9 states have call successors, (52) [2024-09-18 16:38:54,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 123 transitions. [2024-09-18 16:38:54,788 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 123 transitions. Word has length 128 [2024-09-18 16:38:54,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:38:54,789 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 123 transitions. [2024-09-18 16:38:54,789 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 106 states have (on average 1.3867924528301887) internal successors, (147), 62 states have internal predecessors, (147), 21 states have call successors, (23), 1 states have call predecessors, (23), 34 states have return successors, (50), 49 states have call predecessors, (50), 21 states have call successors, (50) [2024-09-18 16:38:54,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:38:54,789 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 123 transitions. [2024-09-18 16:38:54,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-09-18 16:38:54,790 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:38:54,790 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 21, 21, 21, 21, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:38:54,804 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-18 16:38:54,991 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 [2024-09-18 16:38:54,991 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:38:54,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:38:54,991 INFO L85 PathProgramCache]: Analyzing trace with hash -709306135, now seen corresponding path program 17 times [2024-09-18 16:38:54,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:38:54,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867001341] [2024-09-18 16:38:54,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:38:54,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:38:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:55,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:38:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:55,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:38:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:55,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:55,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:55,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:55,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:55,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:56,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:56,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:56,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-18 16:38:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:56,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:57,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:57,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:57,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:58,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:58,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:58,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:58,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:58,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:59,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:59,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:59,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:59,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:59,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:38:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:38:59,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 80 proven. 796 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2024-09-18 16:38:59,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:38:59,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867001341] [2024-09-18 16:38:59,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867001341] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:38:59,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510488059] [2024-09-18 16:38:59,724 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-18 16:38:59,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:38:59,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:38:59,726 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) [2024-09-18 16:38:59,728 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-18 16:38:59,891 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2024-09-18 16:38:59,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:38:59,895 WARN L260 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 277 conjuncts are in the unsatisfiable core [2024-09-18 16:38:59,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:39:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 14 proven. 763 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2024-09-18 16:39:01,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:39:09,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 83 proven. 1345 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-09-18 16:39:09,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510488059] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:39:09,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:39:09,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 38, 72] total 141 [2024-09-18 16:39:09,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783806862] [2024-09-18 16:39:09,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:39:09,805 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2024-09-18 16:39:09,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:39:09,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2024-09-18 16:39:09,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=544, Invalid=19196, Unknown=0, NotChecked=0, Total=19740 [2024-09-18 16:39:09,808 INFO L87 Difference]: Start difference. First operand 87 states and 123 transitions. Second operand has 141 states, 137 states have (on average 1.3868613138686132) internal successors, (190), 80 states have internal predecessors, (190), 27 states have call successors, (29), 1 states have call predecessors, (29), 46 states have return successors, (63), 62 states have call predecessors, (63), 27 states have call successors, (63) [2024-09-18 16:39:14,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:39:14,996 INFO L93 Difference]: Finished difference Result 119 states and 180 transitions. [2024-09-18 16:39:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-18 16:39:14,997 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 137 states have (on average 1.3868613138686132) internal successors, (190), 80 states have internal predecessors, (190), 27 states have call successors, (29), 1 states have call predecessors, (29), 46 states have return successors, (63), 62 states have call predecessors, (63), 27 states have call successors, (63) Word has length 170 [2024-09-18 16:39:14,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:39:14,998 INFO L225 Difference]: With dead ends: 119 [2024-09-18 16:39:14,999 INFO L226 Difference]: Without dead ends: 99 [2024-09-18 16:39:15,001 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7650 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=2288, Invalid=35154, Unknown=0, NotChecked=0, Total=37442 [2024-09-18 16:39:15,001 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 261 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 6522 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 6940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 6522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-09-18 16:39:15,002 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1610 Invalid, 6940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 6522 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-09-18 16:39:15,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-18 16:39:15,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 90. [2024-09-18 16:39:15,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 60 states have internal predecessors, (63), 10 states have call successors, (10), 6 states have call predecessors, (10), 20 states have return successors, (55), 23 states have call predecessors, (55), 9 states have call successors, (55) [2024-09-18 16:39:15,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 128 transitions. [2024-09-18 16:39:15,043 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 128 transitions. Word has length 170 [2024-09-18 16:39:15,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:39:15,043 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 128 transitions. [2024-09-18 16:39:15,044 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 137 states have (on average 1.3868613138686132) internal successors, (190), 80 states have internal predecessors, (190), 27 states have call successors, (29), 1 states have call predecessors, (29), 46 states have return successors, (63), 62 states have call predecessors, (63), 27 states have call successors, (63) [2024-09-18 16:39:15,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:39:15,044 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 128 transitions. [2024-09-18 16:39:15,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 16:39:15,045 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:39:15,045 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:39:15,063 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-18 16:39:15,246 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 [2024-09-18 16:39:15,246 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:39:15,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:39:15,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1661807989, now seen corresponding path program 18 times [2024-09-18 16:39:15,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:39:15,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734382645] [2024-09-18 16:39:15,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:39:15,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:39:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:15,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:39:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:15,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:39:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:15,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:15,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:15,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-18 16:39:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:16,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:16,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:16,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:17,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:17,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:17,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:17,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:17,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:18,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:18,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:18,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:18,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:18,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:18,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:18,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 64 proven. 542 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2024-09-18 16:39:18,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:39:18,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734382645] [2024-09-18 16:39:18,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734382645] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:39:18,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556586422] [2024-09-18 16:39:18,704 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-18 16:39:18,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:39:18,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:39:18,706 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) [2024-09-18 16:39:18,707 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-18 16:39:18,864 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-18 16:39:18,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:39:18,867 WARN L260 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 228 conjuncts are in the unsatisfiable core [2024-09-18 16:39:18,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:39:20,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 36 proven. 538 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2024-09-18 16:39:20,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:39:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 57 proven. 899 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-09-18 16:39:27,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556586422] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:39:27,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:39:27,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 44, 64] total 127 [2024-09-18 16:39:27,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368522061] [2024-09-18 16:39:27,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:39:27,319 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2024-09-18 16:39:27,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:39:27,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2024-09-18 16:39:27,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=15519, Unknown=0, NotChecked=0, Total=16002 [2024-09-18 16:39:27,321 INFO L87 Difference]: Start difference. First operand 90 states and 128 transitions. Second operand has 127 states, 122 states have (on average 1.3934426229508197) internal successors, (170), 73 states have internal predecessors, (170), 23 states have call successors, (25), 1 states have call predecessors, (25), 39 states have return successors, (57), 55 states have call predecessors, (57), 23 states have call successors, (57) [2024-09-18 16:39:31,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:39:31,305 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2024-09-18 16:39:31,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-18 16:39:31,306 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 122 states have (on average 1.3934426229508197) internal successors, (170), 73 states have internal predecessors, (170), 23 states have call successors, (25), 1 states have call predecessors, (25), 39 states have return successors, (57), 55 states have call predecessors, (57), 23 states have call successors, (57) Word has length 142 [2024-09-18 16:39:31,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:39:31,307 INFO L225 Difference]: With dead ends: 109 [2024-09-18 16:39:31,307 INFO L226 Difference]: Without dead ends: 102 [2024-09-18 16:39:31,309 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6169 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1702, Invalid=26690, Unknown=0, NotChecked=0, Total=28392 [2024-09-18 16:39:31,309 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 323 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 4945 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 5402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 4945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:39:31,309 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1602 Invalid, 5402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 4945 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-09-18 16:39:31,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-09-18 16:39:31,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 93. [2024-09-18 16:39:31,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 62 states have internal predecessors, (65), 10 states have call successors, (10), 6 states have call predecessors, (10), 21 states have return successors, (58), 24 states have call predecessors, (58), 9 states have call successors, (58) [2024-09-18 16:39:31,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 133 transitions. [2024-09-18 16:39:31,342 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 133 transitions. Word has length 142 [2024-09-18 16:39:31,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:39:31,342 INFO L474 AbstractCegarLoop]: Abstraction has 93 states and 133 transitions. [2024-09-18 16:39:31,342 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 122 states have (on average 1.3934426229508197) internal successors, (170), 73 states have internal predecessors, (170), 23 states have call successors, (25), 1 states have call predecessors, (25), 39 states have return successors, (57), 55 states have call predecessors, (57), 23 states have call successors, (57) [2024-09-18 16:39:31,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:39:31,343 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 133 transitions. [2024-09-18 16:39:31,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-09-18 16:39:31,344 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:39:31,344 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 24, 24, 24, 24, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:39:31,359 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-18 16:39:31,544 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 [2024-09-18 16:39:31,545 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:39:31,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:39:31,545 INFO L85 PathProgramCache]: Analyzing trace with hash 882713721, now seen corresponding path program 19 times [2024-09-18 16:39:31,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:39:31,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777418501] [2024-09-18 16:39:31,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:39:31,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:39:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:32,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:39:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:32,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:39:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:32,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:32,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:32,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:32,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:32,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:32,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:32,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:32,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:32,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-18 16:39:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:33,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:33,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:34,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:34,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:34,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:34,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:35,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:35,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:35,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:35,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:35,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:35,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:36,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:36,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:36,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:36,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:36,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 92 proven. 1018 refuted. 0 times theorem prover too weak. 1067 trivial. 0 not checked. [2024-09-18 16:39:36,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:39:36,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777418501] [2024-09-18 16:39:36,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777418501] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:39:36,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144526526] [2024-09-18 16:39:36,531 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-18 16:39:36,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:39:36,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:39:36,543 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) [2024-09-18 16:39:36,544 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-18 16:39:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:36,735 WARN L260 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 313 conjuncts are in the unsatisfiable core [2024-09-18 16:39:36,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:39:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 16 proven. 980 refuted. 0 times theorem prover too weak. 1181 trivial. 0 not checked. [2024-09-18 16:39:39,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:39:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 95 proven. 1753 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2024-09-18 16:39:49,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144526526] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:39:49,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:39:49,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 42, 81] total 158 [2024-09-18 16:39:49,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58107792] [2024-09-18 16:39:49,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:39:49,443 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2024-09-18 16:39:49,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:39:49,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2024-09-18 16:39:49,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=612, Invalid=24194, Unknown=0, NotChecked=0, Total=24806 [2024-09-18 16:39:49,446 INFO L87 Difference]: Start difference. First operand 93 states and 133 transitions. Second operand has 158 states, 154 states have (on average 1.3831168831168832) internal successors, (213), 89 states have internal predecessors, (213), 30 states have call successors, (32), 1 states have call predecessors, (32), 52 states have return successors, (71), 70 states have call predecessors, (71), 30 states have call successors, (71) [2024-09-18 16:39:56,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:39:56,616 INFO L93 Difference]: Finished difference Result 127 states and 194 transitions. [2024-09-18 16:39:56,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-09-18 16:39:56,617 INFO L78 Accepts]: Start accepts. Automaton has has 158 states, 154 states have (on average 1.3831168831168832) internal successors, (213), 89 states have internal predecessors, (213), 30 states have call successors, (32), 1 states have call predecessors, (32), 52 states have return successors, (71), 70 states have call predecessors, (71), 30 states have call successors, (71) Word has length 191 [2024-09-18 16:39:56,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:39:56,619 INFO L225 Difference]: With dead ends: 127 [2024-09-18 16:39:56,619 INFO L226 Difference]: Without dead ends: 105 [2024-09-18 16:39:56,622 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9580 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=2736, Invalid=44136, Unknown=0, NotChecked=0, Total=46872 [2024-09-18 16:39:56,623 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 342 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 9304 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 2100 SdHoareTripleChecker+Invalid, 9831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 9304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-09-18 16:39:56,623 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 2100 Invalid, 9831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 9304 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-09-18 16:39:56,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-09-18 16:39:56,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 96. [2024-09-18 16:39:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 63 states have (on average 1.0634920634920635) internal successors, (67), 64 states have internal predecessors, (67), 10 states have call successors, (10), 6 states have call predecessors, (10), 22 states have return successors, (61), 25 states have call predecessors, (61), 9 states have call successors, (61) [2024-09-18 16:39:56,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 138 transitions. [2024-09-18 16:39:56,672 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 138 transitions. Word has length 191 [2024-09-18 16:39:56,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:39:56,672 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 138 transitions. [2024-09-18 16:39:56,672 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 154 states have (on average 1.3831168831168832) internal successors, (213), 89 states have internal predecessors, (213), 30 states have call successors, (32), 1 states have call predecessors, (32), 52 states have return successors, (71), 70 states have call predecessors, (71), 30 states have call successors, (71) [2024-09-18 16:39:56,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:39:56,673 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 138 transitions. [2024-09-18 16:39:56,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-09-18 16:39:56,674 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:39:56,674 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 19, 19, 19, 19, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:39:56,692 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-09-18 16:39:56,874 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 [2024-09-18 16:39:56,875 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:39:56,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:39:56,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1086059211, now seen corresponding path program 20 times [2024-09-18 16:39:56,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:39:56,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341023123] [2024-09-18 16:39:56,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:39:56,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:39:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:57,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:39:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:57,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:39:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:57,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:57,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:57,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-18 16:39:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:58,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:58,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:58,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:59,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:59,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:59,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:39:59,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:39:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:00,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:00,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:00,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:00,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:00,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:00,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:01,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:01,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:01,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:01,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:01,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 72 proven. 663 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2024-09-18 16:40:01,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:40:01,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341023123] [2024-09-18 16:40:01,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341023123] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:40:01,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41491892] [2024-09-18 16:40:01,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 16:40:01,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:40:01,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:40:01,398 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) [2024-09-18 16:40:01,399 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-18 16:40:01,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 16:40:01,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:40:01,596 WARN L260 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 253 conjuncts are in the unsatisfiable core [2024-09-18 16:40:01,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:40:03,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 17 proven. 642 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-09-18 16:40:03,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:40:11,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 62 proven. 1116 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-09-18 16:40:11,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41491892] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:40:11,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:40:11,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 44, 66] total 134 [2024-09-18 16:40:11,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896271174] [2024-09-18 16:40:11,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:40:11,272 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2024-09-18 16:40:11,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:40:11,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2024-09-18 16:40:11,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=17332, Unknown=0, NotChecked=0, Total=17822 [2024-09-18 16:40:11,275 INFO L87 Difference]: Start difference. First operand 96 states and 138 transitions. Second operand has 134 states, 130 states have (on average 1.376923076923077) internal successors, (179), 74 states have internal predecessors, (179), 25 states have call successors, (27), 1 states have call predecessors, (27), 42 states have return successors, (62), 61 states have call predecessors, (62), 25 states have call successors, (62) [2024-09-18 16:40:16,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:40:16,248 INFO L93 Difference]: Finished difference Result 115 states and 169 transitions. [2024-09-18 16:40:16,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-09-18 16:40:16,249 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 130 states have (on average 1.376923076923077) internal successors, (179), 74 states have internal predecessors, (179), 25 states have call successors, (27), 1 states have call predecessors, (27), 42 states have return successors, (62), 61 states have call predecessors, (62), 25 states have call successors, (62) Word has length 156 [2024-09-18 16:40:16,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:40:16,250 INFO L225 Difference]: With dead ends: 115 [2024-09-18 16:40:16,251 INFO L226 Difference]: Without dead ends: 108 [2024-09-18 16:40:16,253 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6907 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1762, Invalid=30458, Unknown=0, NotChecked=0, Total=32220 [2024-09-18 16:40:16,254 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 387 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 6792 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 7092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 6792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-09-18 16:40:16,254 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 2278 Invalid, 7092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 6792 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-09-18 16:40:16,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-09-18 16:40:16,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 99. [2024-09-18 16:40:16,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.0615384615384615) internal successors, (69), 66 states have internal predecessors, (69), 10 states have call successors, (10), 6 states have call predecessors, (10), 23 states have return successors, (64), 26 states have call predecessors, (64), 9 states have call successors, (64) [2024-09-18 16:40:16,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 143 transitions. [2024-09-18 16:40:16,302 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 143 transitions. Word has length 156 [2024-09-18 16:40:16,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:40:16,302 INFO L474 AbstractCegarLoop]: Abstraction has 99 states and 143 transitions. [2024-09-18 16:40:16,303 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 130 states have (on average 1.376923076923077) internal successors, (179), 74 states have internal predecessors, (179), 25 states have call successors, (27), 1 states have call predecessors, (27), 42 states have return successors, (62), 61 states have call predecessors, (62), 25 states have call successors, (62) [2024-09-18 16:40:16,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:40:16,303 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 143 transitions. [2024-09-18 16:40:16,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-09-18 16:40:16,304 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:40:16,304 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 27, 27, 27, 27, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:40:16,316 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-18 16:40:16,504 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 [2024-09-18 16:40:16,504 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:40:16,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:40:16,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1019719079, now seen corresponding path program 21 times [2024-09-18 16:40:16,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:40:16,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617252724] [2024-09-18 16:40:16,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:40:16,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:40:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:17,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:40:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:17,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:40:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:17,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:17,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:17,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:17,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:17,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:17,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:18,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:18,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:18,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:18,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-18 16:40:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:18,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:19,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:19,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:20,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:20,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:21,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:21,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:21,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:21,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:21,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:22,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:22,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:22,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:22,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:22,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:22,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:23,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:23,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2732 backedges. 104 proven. 1267 refuted. 0 times theorem prover too weak. 1361 trivial. 0 not checked. [2024-09-18 16:40:23,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:40:23,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617252724] [2024-09-18 16:40:23,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617252724] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:40:23,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534454343] [2024-09-18 16:40:23,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 16:40:23,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:40:23,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:40:23,245 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) [2024-09-18 16:40:23,246 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-18 16:40:23,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2024-09-18 16:40:23,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:40:23,510 WARN L260 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 349 conjuncts are in the unsatisfiable core [2024-09-18 16:40:23,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:40:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2732 backedges. 18 proven. 1224 refuted. 0 times theorem prover too weak. 1490 trivial. 0 not checked. [2024-09-18 16:40:26,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:40:38,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2732 backedges. 107 proven. 2215 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2024-09-18 16:40:38,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534454343] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:40:38,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:40:38,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 46, 90] total 175 [2024-09-18 16:40:38,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574316611] [2024-09-18 16:40:38,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:40:38,765 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 175 states [2024-09-18 16:40:38,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:40:38,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2024-09-18 16:40:38,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=680, Invalid=29770, Unknown=0, NotChecked=0, Total=30450 [2024-09-18 16:40:38,767 INFO L87 Difference]: Start difference. First operand 99 states and 143 transitions. Second operand has 175 states, 171 states have (on average 1.3801169590643274) internal successors, (236), 98 states have internal predecessors, (236), 33 states have call successors, (35), 1 states have call predecessors, (35), 58 states have return successors, (79), 78 states have call predecessors, (79), 33 states have call successors, (79) [2024-09-18 16:40:47,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:40:47,289 INFO L93 Difference]: Finished difference Result 135 states and 208 transitions. [2024-09-18 16:40:47,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-09-18 16:40:47,289 INFO L78 Accepts]: Start accepts. Automaton has has 175 states, 171 states have (on average 1.3801169590643274) internal successors, (236), 98 states have internal predecessors, (236), 33 states have call successors, (35), 1 states have call predecessors, (35), 58 states have return successors, (79), 78 states have call predecessors, (79), 33 states have call successors, (79) Word has length 212 [2024-09-18 16:40:47,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:40:47,291 INFO L225 Difference]: With dead ends: 135 [2024-09-18 16:40:47,292 INFO L226 Difference]: Without dead ends: 111 [2024-09-18 16:40:47,295 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11729 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=3220, Invalid=54140, Unknown=0, NotChecked=0, Total=57360 [2024-09-18 16:40:47,295 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 512 mSDsluCounter, 2439 mSDsCounter, 0 mSdLazyCounter, 10870 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 2472 SdHoareTripleChecker+Invalid, 11514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 10870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-09-18 16:40:47,295 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 2472 Invalid, 11514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 10870 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-09-18 16:40:47,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-09-18 16:40:47,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 102. [2024-09-18 16:40:47,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.0597014925373134) internal successors, (71), 68 states have internal predecessors, (71), 10 states have call successors, (10), 6 states have call predecessors, (10), 24 states have return successors, (67), 27 states have call predecessors, (67), 9 states have call successors, (67) [2024-09-18 16:40:47,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 148 transitions. [2024-09-18 16:40:47,347 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 148 transitions. Word has length 212 [2024-09-18 16:40:47,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:40:47,347 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 148 transitions. [2024-09-18 16:40:47,347 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 175 states, 171 states have (on average 1.3801169590643274) internal successors, (236), 98 states have internal predecessors, (236), 33 states have call successors, (35), 1 states have call predecessors, (35), 58 states have return successors, (79), 78 states have call predecessors, (79), 33 states have call successors, (79) [2024-09-18 16:40:47,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:40:47,348 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 148 transitions. [2024-09-18 16:40:47,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-09-18 16:40:47,349 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:40:47,349 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 21, 21, 21, 21, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:40:47,366 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-09-18 16:40:47,553 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 [2024-09-18 16:40:47,553 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:40:47,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:40:47,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1710663391, now seen corresponding path program 22 times [2024-09-18 16:40:47,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:40:47,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757817268] [2024-09-18 16:40:47,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:40:47,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:40:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:48,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:40:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:48,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-18 16:40:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:48,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:48,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:48,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-18 16:40:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:49,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:49,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:50,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:50,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:50,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:51,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:51,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:51,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:52,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:52,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:52,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:52,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:52,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:52,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:53,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:53,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:53,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:53,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:53,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:40:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 80 proven. 796 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2024-09-18 16:40:53,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:40:53,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757817268] [2024-09-18 16:40:53,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757817268] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:40:53,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728150415] [2024-09-18 16:40:53,491 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-18 16:40:53,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:40:53,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:40:53,494 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) [2024-09-18 16:40:53,495 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-18 16:40:53,734 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-18 16:40:53,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:40:53,737 WARN L260 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 277 conjuncts are in the unsatisfiable core [2024-09-18 16:40:53,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:40:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 19 proven. 773 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2024-09-18 16:40:56,276 INFO L327 TraceCheckSpWp]: Computing backward predicates...