./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 27b49876 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-27b4987-m [2024-09-21 12:25:15,501 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 12:25:15,616 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-21 12:25:15,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 12:25:15,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 12:25:15,670 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 12:25:15,671 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 12:25:15,671 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 12:25:15,677 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 12:25:15,677 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 12:25:15,678 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 12:25:15,678 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 12:25:15,679 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 12:25:15,679 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 12:25:15,679 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 12:25:15,680 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 12:25:15,680 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 12:25:15,682 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 12:25:15,686 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 12:25:15,686 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 12:25:15,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 12:25:15,689 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 12:25:15,690 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 12:25:15,690 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 12:25:15,690 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 12:25:15,690 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 12:25:15,691 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 12:25:15,691 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 12:25:15,691 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 12:25:15,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 12:25:15,692 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 12:25:15,692 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 12:25:15,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 12:25:15,692 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 12:25:15,692 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 12:25:15,693 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 12:25:15,693 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 12:25:15,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 12:25:15,699 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 12:25:15,699 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 12:25:15,699 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 12:25:15,700 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 12:25:15,704 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-21 12:25:16,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 12:25:16,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 12:25:16,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 12:25:16,230 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 12:25:16,230 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 12:25:16,231 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/MultCommutative-2.c [2024-09-21 12:25:17,855 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 12:25:18,066 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 12:25:18,068 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/MultCommutative-2.c [2024-09-21 12:25:18,079 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/2ee91d4e3/9b17ed0b37154548b349c642f0241af0/FLAGdff4e97d5 [2024-09-21 12:25:18,440 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/2ee91d4e3/9b17ed0b37154548b349c642f0241af0 [2024-09-21 12:25:18,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 12:25:18,444 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-21 12:25:18,449 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 12:25:18,449 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 12:25:18,457 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 12:25:18,458 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:25:18" (1/1) ... [2024-09-21 12:25:18,463 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c3f9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:18, skipping insertion in model container [2024-09-21 12:25:18,463 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:25:18" (1/1) ... [2024-09-21 12:25:18,496 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 12:25:18,638 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] [2024-09-21 12:25:18,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 12:25:18,652 INFO L200 MainTranslator]: Completed pre-run [2024-09-21 12:25:18,666 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] [2024-09-21 12:25:18,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 12:25:18,682 INFO L204 MainTranslator]: Completed translation [2024-09-21 12:25:18,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:18 WrapperNode [2024-09-21 12:25:18,686 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 12:25:18,687 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-21 12:25:18,687 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-21 12:25:18,688 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-21 12:25:18,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:18" (1/1) ... [2024-09-21 12:25:18,702 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:18" (1/1) ... [2024-09-21 12:25:18,707 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-21 12:25:18,708 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-21 12:25:18,708 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 12:25:18,708 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 12:25:18,709 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 12:25:18,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:18" (1/1) ... [2024-09-21 12:25:18,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:18" (1/1) ... [2024-09-21 12:25:18,719 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:18" (1/1) ... [2024-09-21 12:25:18,730 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]. [2024-09-21 12:25:18,730 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:18" (1/1) ... [2024-09-21 12:25:18,730 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:18" (1/1) ... [2024-09-21 12:25:18,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:18" (1/1) ... [2024-09-21 12:25:18,736 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:18" (1/1) ... [2024-09-21 12:25:18,736 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:18" (1/1) ... [2024-09-21 12:25:18,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:18" (1/1) ... [2024-09-21 12:25:18,738 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 12:25:18,739 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 12:25:18,739 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 12:25:18,739 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 12:25:18,740 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:18" (1/1) ... [2024-09-21 12:25:18,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 12:25:18,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:18,774 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) [2024-09-21 12:25:18,776 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 [2024-09-21 12:25:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 12:25:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 12:25:18,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 12:25:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2024-09-21 12:25:18,841 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2024-09-21 12:25:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 12:25:18,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 12:25:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 12:25:18,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 12:25:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-21 12:25:18,898 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 12:25:18,900 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 12:25:19,020 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-09-21 12:25:19,021 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 12:25:19,040 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 12:25:19,040 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-21 12:25:19,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:25:19 BoogieIcfgContainer [2024-09-21 12:25:19,041 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 12:25:19,043 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-21 12:25:19,043 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-21 12:25:19,046 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-21 12:25:19,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:25:18" (1/3) ... [2024-09-21 12:25:19,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc06a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:25:19, skipping insertion in model container [2024-09-21 12:25:19,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:18" (2/3) ... [2024-09-21 12:25:19,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc06a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:25:19, skipping insertion in model container [2024-09-21 12:25:19,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:25:19" (3/3) ... [2024-09-21 12:25:19,052 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2024-09-21 12:25:19,069 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-21 12:25:19,070 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-21 12:25:19,117 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-21 12:25:19,123 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;@5b62b881, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-21 12:25:19,123 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-21 12:25:19,127 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) [2024-09-21 12:25:19,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-21 12:25:19,134 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:19,134 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:25:19,135 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:19,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:19,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1859846447, now seen corresponding path program 1 times [2024-09-21 12:25:19,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:19,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762402578] [2024-09-21 12:25:19,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:19,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:19,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:19,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:25:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:19,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-21 12:25:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-21 12:25:19,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:19,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762402578] [2024-09-21 12:25:19,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762402578] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 12:25:19,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 12:25:19,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-21 12:25:19,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776209046] [2024-09-21 12:25:19,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 12:25:19,710 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-21 12:25:19,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:25:19,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-21 12:25:19,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-21 12:25:19,732 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) [2024-09-21 12:25:19,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:19,816 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2024-09-21 12:25:19,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-21 12:25:19,823 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 [2024-09-21 12:25:19,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:19,830 INFO L225 Difference]: With dead ends: 41 [2024-09-21 12:25:19,830 INFO L226 Difference]: Without dead ends: 29 [2024-09-21 12:25:19,832 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 [2024-09-21 12:25:19,836 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 [2024-09-21 12:25:19,837 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] [2024-09-21 12:25:19,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-21 12:25:19,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-09-21 12:25:19,871 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) [2024-09-21 12:25:19,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2024-09-21 12:25:19,874 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 23 [2024-09-21 12:25:19,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:19,874 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2024-09-21 12:25:19,874 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) [2024-09-21 12:25:19,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:19,879 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2024-09-21 12:25:19,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-21 12:25:19,880 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:19,881 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] [2024-09-21 12:25:19,881 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-21 12:25:19,881 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:19,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:19,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1394897481, now seen corresponding path program 1 times [2024-09-21 12:25:19,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:19,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664191761] [2024-09-21 12:25:19,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:19,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:20,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:20,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:25:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:20,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-21 12:25:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:20,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:25:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 12:25:20,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:20,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664191761] [2024-09-21 12:25:20,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664191761] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:25:20,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452956342] [2024-09-21 12:25:20,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:20,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:20,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:20,184 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) [2024-09-21 12:25:20,191 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-21 12:25:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:20,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-21 12:25:20,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:25:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-21 12:25:20,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:25:20,438 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-21 12:25:20,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452956342] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:25:20,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:25:20,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2024-09-21 12:25:20,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414405028] [2024-09-21 12:25:20,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:25:20,441 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-21 12:25:20,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:25:20,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-21 12:25:20,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-09-21 12:25:20,445 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) [2024-09-21 12:25:20,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:20,668 INFO L93 Difference]: Finished difference Result 55 states and 86 transitions. [2024-09-21 12:25:20,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-21 12:25:20,669 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 [2024-09-21 12:25:20,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:20,670 INFO L225 Difference]: With dead ends: 55 [2024-09-21 12:25:20,670 INFO L226 Difference]: Without dead ends: 30 [2024-09-21 12:25:20,672 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 [2024-09-21 12:25:20,673 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:25:20,673 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 163 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:25:20,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-21 12:25:20,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-09-21 12:25:20,685 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) [2024-09-21 12:25:20,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-09-21 12:25:20,703 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 29 [2024-09-21 12:25:20,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:20,703 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-09-21 12:25:20,704 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) [2024-09-21 12:25:20,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:20,704 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-09-21 12:25:20,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-21 12:25:20,705 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:20,706 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] [2024-09-21 12:25:20,726 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-21 12:25:20,909 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 [2024-09-21 12:25:20,911 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:20,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:20,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1508818693, now seen corresponding path program 1 times [2024-09-21 12:25:20,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:20,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656914502] [2024-09-21 12:25:20,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:20,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:20,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:20,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:25:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:20,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:21,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-21 12:25:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:21,038 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-21 12:25:21,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:21,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656914502] [2024-09-21 12:25:21,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656914502] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 12:25:21,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 12:25:21,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-21 12:25:21,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862551970] [2024-09-21 12:25:21,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 12:25:21,041 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 12:25:21,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:25:21,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 12:25:21,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 12:25:21,042 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) [2024-09-21 12:25:21,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:21,098 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2024-09-21 12:25:21,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-21 12:25:21,099 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 [2024-09-21 12:25:21,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:21,100 INFO L225 Difference]: With dead ends: 34 [2024-09-21 12:25:21,100 INFO L226 Difference]: Without dead ends: 30 [2024-09-21 12:25:21,101 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 [2024-09-21 12:25:21,102 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, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 12:25:21,103 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 58 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 12:25:21,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-21 12:25:21,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-21 12:25:21,110 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) [2024-09-21 12:25:21,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-09-21 12:25:21,111 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 30 [2024-09-21 12:25:21,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:21,111 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-09-21 12:25:21,112 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) [2024-09-21 12:25:21,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:21,112 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-09-21 12:25:21,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-21 12:25:21,116 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:21,116 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] [2024-09-21 12:25:21,117 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-21 12:25:21,117 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:21,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:21,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1681162323, now seen corresponding path program 1 times [2024-09-21 12:25:21,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:21,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339891682] [2024-09-21 12:25:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:21,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:21,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:21,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:25:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:21,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:21,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-21 12:25:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:21,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:21,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:25:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:21,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:21,319 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-21 12:25:21,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:21,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339891682] [2024-09-21 12:25:21,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339891682] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:25:21,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569167483] [2024-09-21 12:25:21,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:21,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:21,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:21,330 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) [2024-09-21 12:25:21,331 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-21 12:25:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:21,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-21 12:25:21,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:25:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-21 12:25:21,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:25:21,692 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-09-21 12:25:21,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569167483] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:25:21,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:25:21,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2024-09-21 12:25:21,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793818360] [2024-09-21 12:25:21,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:25:21,695 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-21 12:25:21,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:25:21,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-21 12:25:21,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-09-21 12:25:21,697 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) [2024-09-21 12:25:21,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:21,775 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2024-09-21 12:25:21,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-21 12:25:21,776 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 [2024-09-21 12:25:21,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:21,777 INFO L225 Difference]: With dead ends: 49 [2024-09-21 12:25:21,777 INFO L226 Difference]: Without dead ends: 23 [2024-09-21 12:25:21,778 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 [2024-09-21 12:25:21,779 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 [2024-09-21 12:25:21,779 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] [2024-09-21 12:25:21,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-21 12:25:21,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-21 12:25:21,783 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) [2024-09-21 12:25:21,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-09-21 12:25:21,784 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 50 [2024-09-21 12:25:21,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:21,784 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-09-21 12:25:21,784 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) [2024-09-21 12:25:21,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:21,785 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-09-21 12:25:21,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-21 12:25:21,786 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:21,786 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] [2024-09-21 12:25:21,803 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-21 12:25:21,990 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 [2024-09-21 12:25:21,991 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:21,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:21,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1570908093, now seen corresponding path program 2 times [2024-09-21 12:25:21,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:21,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177701043] [2024-09-21 12:25:21,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:21,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:22,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:22,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:25:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:22,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:22,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-21 12:25:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:22,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-21 12:25:22,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:22,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177701043] [2024-09-21 12:25:22,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177701043] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:25:22,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433952440] [2024-09-21 12:25:22,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 12:25:22,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:22,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:22,713 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) [2024-09-21 12:25:22,725 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-21 12:25:22,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 12:25:22,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:25:22,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-21 12:25:22,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:25:23,118 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-21 12:25:23,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:25:23,932 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-21 12:25:23,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433952440] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:25:23,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:25:23,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 40 [2024-09-21 12:25:23,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181273810] [2024-09-21 12:25:23,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:25:23,933 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-21 12:25:23,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:25:23,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-21 12:25:23,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2024-09-21 12:25:23,935 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) [2024-09-21 12:25:24,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:24,174 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-09-21 12:25:24,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-21 12:25:24,175 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 [2024-09-21 12:25:24,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:24,176 INFO L225 Difference]: With dead ends: 34 [2024-09-21 12:25:24,176 INFO L226 Difference]: Without dead ends: 30 [2024-09-21 12:25:24,177 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=213, Invalid=1767, Unknown=0, NotChecked=0, Total=1980 [2024-09-21 12:25:24,178 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:25:24,178 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 184 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:25:24,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-21 12:25:24,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-09-21 12:25:24,184 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) [2024-09-21 12:25:24,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-09-21 12:25:24,185 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 37 [2024-09-21 12:25:24,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:24,185 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-09-21 12:25:24,185 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) [2024-09-21 12:25:24,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:24,186 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-09-21 12:25:24,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-21 12:25:24,187 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:24,187 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] [2024-09-21 12:25:24,202 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-21 12:25:24,391 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 [2024-09-21 12:25:24,393 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:24,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:24,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1355077807, now seen corresponding path program 3 times [2024-09-21 12:25:24,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:24,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941416033] [2024-09-21 12:25:24,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:24,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:24,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:24,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:25:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:24,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:24,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-21 12:25:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:24,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:24,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-21 12:25:24,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:24,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941416033] [2024-09-21 12:25:24,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941416033] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:25:24,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334856942] [2024-09-21 12:25:24,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 12:25:24,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:24,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:24,868 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) [2024-09-21 12:25:24,869 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-21 12:25:24,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-21 12:25:24,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:25:24,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-09-21 12:25:24,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:25:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 29 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-21 12:25:25,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:25:25,870 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-21 12:25:25,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334856942] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:25:25,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:25:25,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 18] total 39 [2024-09-21 12:25:25,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980220690] [2024-09-21 12:25:25,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:25:25,872 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-21 12:25:25,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:25:25,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-21 12:25:25,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1366, Unknown=0, NotChecked=0, Total=1482 [2024-09-21 12:25:25,874 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) [2024-09-21 12:25:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:26,689 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2024-09-21 12:25:26,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-21 12:25:26,690 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 [2024-09-21 12:25:26,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:26,691 INFO L225 Difference]: With dead ends: 48 [2024-09-21 12:25:26,691 INFO L226 Difference]: Without dead ends: 40 [2024-09-21 12:25:26,693 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=326, Invalid=2866, Unknown=0, NotChecked=0, Total=3192 [2024-09-21 12:25:26,694 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 [2024-09-21 12:25:26,694 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] [2024-09-21 12:25:26,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-21 12:25:26,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2024-09-21 12:25:26,705 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) [2024-09-21 12:25:26,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2024-09-21 12:25:26,706 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 44 [2024-09-21 12:25:26,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:26,706 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2024-09-21 12:25:26,706 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) [2024-09-21 12:25:26,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:26,707 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2024-09-21 12:25:26,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-21 12:25:26,708 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:26,708 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] [2024-09-21 12:25:26,727 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-21 12:25:26,912 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 [2024-09-21 12:25:26,913 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:26,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:26,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1628773349, now seen corresponding path program 4 times [2024-09-21 12:25:26,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:26,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29125007] [2024-09-21 12:25:26,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:26,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:27,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:27,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:25:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:27,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:27,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:27,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-21 12:25:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:27,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:27,344 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-21 12:25:27,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:27,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29125007] [2024-09-21 12:25:27,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29125007] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:25:27,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487337091] [2024-09-21 12:25:27,345 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 12:25:27,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:27,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:27,350 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) [2024-09-21 12:25:27,355 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-21 12:25:27,404 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 12:25:27,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:25:27,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-09-21 12:25:27,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:25:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-21 12:25:27,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:25:28,696 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-21 12:25:28,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487337091] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:25:28,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:25:28,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 20] total 46 [2024-09-21 12:25:28,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523305020] [2024-09-21 12:25:28,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:25:28,698 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-21 12:25:28,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:25:28,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-21 12:25:28,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1895, Unknown=0, NotChecked=0, Total=2070 [2024-09-21 12:25:28,704 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) [2024-09-21 12:25:29,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:29,545 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2024-09-21 12:25:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-21 12:25:29,546 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 [2024-09-21 12:25:29,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:29,547 INFO L225 Difference]: With dead ends: 52 [2024-09-21 12:25:29,547 INFO L226 Difference]: Without dead ends: 44 [2024-09-21 12:25:29,549 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=421, Invalid=3485, Unknown=0, NotChecked=0, Total=3906 [2024-09-21 12:25:29,550 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-21 12:25:29,550 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 267 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-21 12:25:29,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-21 12:25:29,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2024-09-21 12:25:29,558 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) [2024-09-21 12:25:29,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2024-09-21 12:25:29,559 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 44 [2024-09-21 12:25:29,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:29,559 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2024-09-21 12:25:29,559 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) [2024-09-21 12:25:29,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:29,560 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2024-09-21 12:25:29,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-21 12:25:29,561 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:29,561 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] [2024-09-21 12:25:29,578 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-21 12:25:29,761 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 [2024-09-21 12:25:29,762 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:29,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:29,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1170996589, now seen corresponding path program 5 times [2024-09-21 12:25:29,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:29,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106558426] [2024-09-21 12:25:29,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:29,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:30,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:30,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:25:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:30,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:30,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-21 12:25:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:30,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:30,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:30,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:30,446 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 7 proven. 46 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-21 12:25:30,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:30,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106558426] [2024-09-21 12:25:30,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106558426] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:25:30,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239724049] [2024-09-21 12:25:30,447 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 12:25:30,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:30,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:30,449 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) [2024-09-21 12:25:30,450 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-21 12:25:30,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-21 12:25:30,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:25:30,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-09-21 12:25:30,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:25:31,046 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 22 proven. 41 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-21 12:25:31,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:25:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 8 proven. 64 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-21 12:25:32,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239724049] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:25:32,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:25:32,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 23] total 54 [2024-09-21 12:25:32,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285098671] [2024-09-21 12:25:32,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:25:32,568 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-21 12:25:32,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:25:32,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-21 12:25:32,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=2670, Unknown=0, NotChecked=0, Total=2862 [2024-09-21 12:25:32,571 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) [2024-09-21 12:25:33,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:33,760 INFO L93 Difference]: Finished difference Result 71 states and 96 transitions. [2024-09-21 12:25:33,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-21 12:25:33,761 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 [2024-09-21 12:25:33,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:33,763 INFO L225 Difference]: With dead ends: 71 [2024-09-21 12:25:33,763 INFO L226 Difference]: Without dead ends: 65 [2024-09-21 12:25:33,765 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1138 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=523, Invalid=5027, Unknown=0, NotChecked=0, Total=5550 [2024-09-21 12:25:33,766 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 52 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-09-21 12:25:33,766 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 373 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-21 12:25:33,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-09-21 12:25:33,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2024-09-21 12:25:33,803 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) [2024-09-21 12:25:33,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 80 transitions. [2024-09-21 12:25:33,805 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 80 transitions. Word has length 51 [2024-09-21 12:25:33,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:33,805 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 80 transitions. [2024-09-21 12:25:33,805 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) [2024-09-21 12:25:33,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:33,806 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 80 transitions. [2024-09-21 12:25:33,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-21 12:25:33,807 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:33,807 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] [2024-09-21 12:25:33,825 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-21 12:25:34,011 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 [2024-09-21 12:25:34,012 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:34,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:34,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1806313405, now seen corresponding path program 6 times [2024-09-21 12:25:34,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:34,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068160727] [2024-09-21 12:25:34,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:34,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:34,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:34,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:25:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:34,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:34,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:34,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:34,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-21 12:25:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:34,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:34,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:34,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:35,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 24 proven. 117 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-09-21 12:25:35,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:35,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068160727] [2024-09-21 12:25:35,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068160727] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:25:35,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980497245] [2024-09-21 12:25:35,092 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 12:25:35,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:35,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:35,094 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) [2024-09-21 12:25:35,099 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-21 12:25:35,161 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-21 12:25:35,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:25:35,165 WARN L260 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-09-21 12:25:35,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:25:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 4 proven. 106 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-21 12:25:35,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:25:37,501 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 29 proven. 153 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-21 12:25:37,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980497245] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:25:37,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:25:37,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 18, 30] total 61 [2024-09-21 12:25:37,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279235112] [2024-09-21 12:25:37,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:25:37,505 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-09-21 12:25:37,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:25:37,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-09-21 12:25:37,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=3432, Unknown=0, NotChecked=0, Total=3660 [2024-09-21 12:25:37,508 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) [2024-09-21 12:25:38,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:38,975 INFO L93 Difference]: Finished difference Result 81 states and 113 transitions. [2024-09-21 12:25:38,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-21 12:25:38,975 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 [2024-09-21 12:25:38,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:38,977 INFO L225 Difference]: With dead ends: 81 [2024-09-21 12:25:38,977 INFO L226 Difference]: Without dead ends: 71 [2024-09-21 12:25:38,979 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 [2024-09-21 12:25:38,979 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 49 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-21 12:25:38,980 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 504 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-21 12:25:38,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-21 12:25:38,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 60. [2024-09-21 12:25:38,994 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) [2024-09-21 12:25:38,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-09-21 12:25:38,995 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 72 [2024-09-21 12:25:38,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:38,995 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-09-21 12:25:38,995 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) [2024-09-21 12:25:38,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:38,996 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2024-09-21 12:25:38,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-09-21 12:25:38,997 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:38,998 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] [2024-09-21 12:25:39,015 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-21 12:25:39,202 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 [2024-09-21 12:25:39,203 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:39,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:39,204 INFO L85 PathProgramCache]: Analyzing trace with hash 240502641, now seen corresponding path program 7 times [2024-09-21 12:25:39,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:39,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855127778] [2024-09-21 12:25:39,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:39,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:39,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:39,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:25:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:39,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:39,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:39,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:39,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:39,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-21 12:25:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:40,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:40,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:40,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:40,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:40,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:40,499 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 178 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-09-21 12:25:40,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:40,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855127778] [2024-09-21 12:25:40,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855127778] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:25:40,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158656426] [2024-09-21 12:25:40,500 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 12:25:40,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:40,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:40,502 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) [2024-09-21 12:25:40,503 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-21 12:25:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:40,589 WARN L260 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-09-21 12:25:40,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:25:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 5 proven. 163 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-09-21 12:25:41,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:25:43,651 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 38 proven. 250 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-09-21 12:25:43,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158656426] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:25:43,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:25:43,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 20, 36] total 72 [2024-09-21 12:25:43,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858366619] [2024-09-21 12:25:43,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:25:43,653 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-21 12:25:43,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:25:43,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-21 12:25:43,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=4838, Unknown=0, NotChecked=0, Total=5112 [2024-09-21 12:25:43,655 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) [2024-09-21 12:25:45,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:45,853 INFO L93 Difference]: Finished difference Result 87 states and 123 transitions. [2024-09-21 12:25:45,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-21 12:25:45,853 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 [2024-09-21 12:25:45,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:45,855 INFO L225 Difference]: With dead ends: 87 [2024-09-21 12:25:45,855 INFO L226 Difference]: Without dead ends: 74 [2024-09-21 12:25:45,858 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2049 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=813, Invalid=9287, Unknown=0, NotChecked=0, Total=10100 [2024-09-21 12:25:45,859 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 71 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 2527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-21 12:25:45,863 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 779 Invalid, 2527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-21 12:25:45,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-21 12:25:45,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63. [2024-09-21 12:25:45,893 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) [2024-09-21 12:25:45,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 84 transitions. [2024-09-21 12:25:45,895 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 84 transitions. Word has length 86 [2024-09-21 12:25:45,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:45,896 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 84 transitions. [2024-09-21 12:25:45,896 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) [2024-09-21 12:25:45,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:45,897 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 84 transitions. [2024-09-21 12:25:45,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-21 12:25:45,898 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:45,898 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] [2024-09-21 12:25:45,915 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-21 12:25:46,102 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 [2024-09-21 12:25:46,103 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:46,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:46,104 INFO L85 PathProgramCache]: Analyzing trace with hash -879054875, now seen corresponding path program 8 times [2024-09-21 12:25:46,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:46,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252191302] [2024-09-21 12:25:46,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:46,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:46,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:46,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:25:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:46,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:46,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:46,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-21 12:25:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:46,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:46,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:46,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:47,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:47,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:47,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 28 proven. 146 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-09-21 12:25:47,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:47,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252191302] [2024-09-21 12:25:47,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252191302] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:25:47,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775093453] [2024-09-21 12:25:47,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 12:25:47,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:47,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:47,253 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) [2024-09-21 12:25:47,258 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-21 12:25:47,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 12:25:47,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:25:47,328 WARN L260 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-09-21 12:25:47,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:25:48,077 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 6 proven. 136 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-09-21 12:25:48,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:25:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 29 proven. 203 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-21 12:25:50,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775093453] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:25:50,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:25:50,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 33] total 68 [2024-09-21 12:25:50,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270269893] [2024-09-21 12:25:50,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:25:50,058 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-21 12:25:50,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:25:50,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-21 12:25:50,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=4308, Unknown=0, NotChecked=0, Total=4556 [2024-09-21 12:25:50,060 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) [2024-09-21 12:25:51,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:51,746 INFO L93 Difference]: Finished difference Result 84 states and 117 transitions. [2024-09-21 12:25:51,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-21 12:25:51,747 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 [2024-09-21 12:25:51,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:51,748 INFO L225 Difference]: With dead ends: 84 [2024-09-21 12:25:51,748 INFO L226 Difference]: Without dead ends: 77 [2024-09-21 12:25:51,751 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1795 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=655, Invalid=7901, Unknown=0, NotChecked=0, Total=8556 [2024-09-21 12:25:51,751 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 62 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-21 12:25:51,752 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 682 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1958 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-21 12:25:51,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-21 12:25:51,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 66. [2024-09-21 12:25:51,769 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) [2024-09-21 12:25:51,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 89 transitions. [2024-09-21 12:25:51,770 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 89 transitions. Word has length 79 [2024-09-21 12:25:51,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:51,770 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 89 transitions. [2024-09-21 12:25:51,771 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) [2024-09-21 12:25:51,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:51,771 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 89 transitions. [2024-09-21 12:25:51,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-09-21 12:25:51,772 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:51,772 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] [2024-09-21 12:25:51,789 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-21 12:25:51,972 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 [2024-09-21 12:25:51,973 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:51,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:51,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1998053917, now seen corresponding path program 9 times [2024-09-21 12:25:51,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:51,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470993174] [2024-09-21 12:25:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:51,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:52,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:52,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:25:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:52,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:52,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:52,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-21 12:25:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:52,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:53,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:53,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:53,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:53,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:53,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:53,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 178 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-09-21 12:25:53,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:53,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470993174] [2024-09-21 12:25:53,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470993174] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:25:53,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809848220] [2024-09-21 12:25:53,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 12:25:53,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:53,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:53,863 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) [2024-09-21 12:25:53,884 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-21 12:25:53,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-09-21 12:25:53,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:25:53,973 WARN L260 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-09-21 12:25:53,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:25:54,861 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 7 proven. 167 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-09-21 12:25:54,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:25:57,055 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 256 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-09-21 12:25:57,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809848220] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:25:57,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:25:57,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24, 36] total 74 [2024-09-21 12:25:57,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012752808] [2024-09-21 12:25:57,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:25:57,056 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-21 12:25:57,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:25:57,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-21 12:25:57,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=5132, Unknown=0, NotChecked=0, Total=5402 [2024-09-21 12:25:57,059 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) [2024-09-21 12:25:58,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:58,709 INFO L93 Difference]: Finished difference Result 87 states and 122 transitions. [2024-09-21 12:25:58,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-21 12:25:58,710 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 [2024-09-21 12:25:58,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:58,711 INFO L225 Difference]: With dead ends: 87 [2024-09-21 12:25:58,711 INFO L226 Difference]: Without dead ends: 80 [2024-09-21 12:25:58,713 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2128 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=736, Invalid=9364, Unknown=0, NotChecked=0, Total=10100 [2024-09-21 12:25:58,713 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 94 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2024-09-21 12:25:58,713 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 612 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1783 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-21 12:25:58,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-21 12:25:58,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2024-09-21 12:25:58,732 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) [2024-09-21 12:25:58,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 94 transitions. [2024-09-21 12:25:58,733 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 94 transitions. Word has length 86 [2024-09-21 12:25:58,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:58,734 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 94 transitions. [2024-09-21 12:25:58,734 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) [2024-09-21 12:25:58,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:58,734 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 94 transitions. [2024-09-21 12:25:58,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-21 12:25:58,735 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:58,735 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] [2024-09-21 12:25:58,751 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-21 12:25:58,939 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 [2024-09-21 12:25:58,940 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:58,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:58,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1103674431, now seen corresponding path program 10 times [2024-09-21 12:25:58,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:58,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987445544] [2024-09-21 12:25:58,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:58,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:59,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:59,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:25:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:59,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:59,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:59,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:59,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:59,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:59,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-21 12:25:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:59,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:59,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:59,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:59,905 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 26 proven. 148 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-09-21 12:25:59,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:59,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987445544] [2024-09-21 12:25:59,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987445544] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:25:59,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348029257] [2024-09-21 12:25:59,906 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 12:25:59,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:59,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:59,908 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) [2024-09-21 12:25:59,909 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-21 12:25:59,988 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 12:25:59,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:25:59,991 WARN L260 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-09-21 12:25:59,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:26:00,626 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 3 proven. 136 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-09-21 12:26:00,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:26:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 29 proven. 203 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-21 12:26:02,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348029257] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:26:02,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:26:02,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 20, 33] total 69 [2024-09-21 12:26:02,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938901392] [2024-09-21 12:26:02,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:26:02,806 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-09-21 12:26:02,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:26:02,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-09-21 12:26:02,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=4429, Unknown=0, NotChecked=0, Total=4692 [2024-09-21 12:26:02,808 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) [2024-09-21 12:26:04,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:26:04,480 INFO L93 Difference]: Finished difference Result 91 states and 127 transitions. [2024-09-21 12:26:04,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-21 12:26:04,480 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 [2024-09-21 12:26:04,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:26:04,481 INFO L225 Difference]: With dead ends: 91 [2024-09-21 12:26:04,481 INFO L226 Difference]: Without dead ends: 78 [2024-09-21 12:26:04,482 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1856 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=757, Invalid=8173, Unknown=0, NotChecked=0, Total=8930 [2024-09-21 12:26:04,483 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 54 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-21 12:26:04,483 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 596 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-21 12:26:04,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-21 12:26:04,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2024-09-21 12:26:04,505 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) [2024-09-21 12:26:04,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 93 transitions. [2024-09-21 12:26:04,507 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 93 transitions. Word has length 79 [2024-09-21 12:26:04,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:26:04,509 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 93 transitions. [2024-09-21 12:26:04,509 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) [2024-09-21 12:26:04,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:26:04,510 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 93 transitions. [2024-09-21 12:26:04,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-21 12:26:04,511 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:26:04,511 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] [2024-09-21 12:26:04,528 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-21 12:26:04,715 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 [2024-09-21 12:26:04,716 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:26:04,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:26:04,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1404959985, now seen corresponding path program 11 times [2024-09-21 12:26:04,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:26:04,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195440667] [2024-09-21 12:26:04,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:26:04,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:26:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:04,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:26:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:04,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:26:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:05,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:05,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:05,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-21 12:26:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:05,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:05,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:05,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:05,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:05,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:05,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:06,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:06,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:06,328 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 36 proven. 213 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-09-21 12:26:06,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:26:06,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195440667] [2024-09-21 12:26:06,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195440667] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:26:06,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543774603] [2024-09-21 12:26:06,329 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 12:26:06,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:26:06,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:26:06,336 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) [2024-09-21 12:26:06,338 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-21 12:26:06,431 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-09-21 12:26:06,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:26:06,436 WARN L260 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-09-21 12:26:06,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:26:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 17 proven. 193 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-09-21 12:26:07,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:26:10,289 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 36 proven. 315 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-09-21 12:26:10,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543774603] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:26:10,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:26:10,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 26, 39] total 80 [2024-09-21 12:26:10,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752847003] [2024-09-21 12:26:10,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:26:10,292 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-09-21 12:26:10,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:26:10,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-09-21 12:26:10,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=6028, Unknown=0, NotChecked=0, Total=6320 [2024-09-21 12:26:10,295 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) [2024-09-21 12:26:12,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:26:12,659 INFO L93 Difference]: Finished difference Result 88 states and 124 transitions. [2024-09-21 12:26:12,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-21 12:26:12,659 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 [2024-09-21 12:26:12,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:26:12,661 INFO L225 Difference]: With dead ends: 88 [2024-09-21 12:26:12,661 INFO L226 Difference]: Without dead ends: 81 [2024-09-21 12:26:12,662 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2427 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=817, Invalid=10739, Unknown=0, NotChecked=0, Total=11556 [2024-09-21 12:26:12,663 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 124 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 2451 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.3s IncrementalHoareTripleChecker+Time [2024-09-21 12:26:12,663 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 859 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2451 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-09-21 12:26:12,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-09-21 12:26:12,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 72. [2024-09-21 12:26:12,684 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) [2024-09-21 12:26:12,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 98 transitions. [2024-09-21 12:26:12,685 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 98 transitions. Word has length 93 [2024-09-21 12:26:12,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:26:12,687 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 98 transitions. [2024-09-21 12:26:12,688 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) [2024-09-21 12:26:12,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:26:12,688 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 98 transitions. [2024-09-21 12:26:12,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-09-21 12:26:12,689 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:26:12,689 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] [2024-09-21 12:26:12,706 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-21 12:26:12,893 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 [2024-09-21 12:26:12,894 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:26:12,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:26:12,894 INFO L85 PathProgramCache]: Analyzing trace with hash -307076237, now seen corresponding path program 12 times [2024-09-21 12:26:12,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:26:12,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995430208] [2024-09-21 12:26:12,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:26:12,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:26:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:13,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:26:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:13,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:26:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:13,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:13,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:13,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-21 12:26:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:13,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:13,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:13,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:14,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:14,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:14,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:14,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:14,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:14,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:14,641 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 40 proven. 251 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2024-09-21 12:26:14,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:26:14,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995430208] [2024-09-21 12:26:14,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995430208] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:26:14,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924833208] [2024-09-21 12:26:14,642 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 12:26:14,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:26:14,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:26:14,645 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) [2024-09-21 12:26:14,647 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-21 12:26:14,740 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-09-21 12:26:14,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:26:14,745 WARN L260 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 157 conjuncts are in the unsatisfiable core [2024-09-21 12:26:14,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:26:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 19 proven. 229 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-09-21 12:26:15,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:26:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 39 proven. 380 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-09-21 12:26:19,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924833208] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:26:19,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:26:19,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 28, 42] total 86 [2024-09-21 12:26:19,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034955052] [2024-09-21 12:26:19,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:26:19,269 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-21 12:26:19,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:26:19,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-21 12:26:19,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=6996, Unknown=0, NotChecked=0, Total=7310 [2024-09-21 12:26:19,272 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) [2024-09-21 12:26:21,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:26:21,521 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2024-09-21 12:26:21,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-21 12:26:21,521 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 [2024-09-21 12:26:21,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:26:21,522 INFO L225 Difference]: With dead ends: 91 [2024-09-21 12:26:21,522 INFO L226 Difference]: Without dead ends: 84 [2024-09-21 12:26:21,524 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2812 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=906, Invalid=12434, Unknown=0, NotChecked=0, Total=13340 [2024-09-21 12:26:21,524 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 146 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-21 12:26:21,524 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 796 Invalid, 2548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-21 12:26:21,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-09-21 12:26:21,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 75. [2024-09-21 12:26:21,546 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) [2024-09-21 12:26:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 103 transitions. [2024-09-21 12:26:21,547 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 103 transitions. Word has length 100 [2024-09-21 12:26:21,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:26:21,547 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 103 transitions. [2024-09-21 12:26:21,547 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) [2024-09-21 12:26:21,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:26:21,547 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 103 transitions. [2024-09-21 12:26:21,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-09-21 12:26:21,549 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:26:21,549 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] [2024-09-21 12:26:21,563 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-21 12:26:21,752 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 [2024-09-21 12:26:21,753 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:26:21,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:26:21,753 INFO L85 PathProgramCache]: Analyzing trace with hash 179440229, now seen corresponding path program 13 times [2024-09-21 12:26:21,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:26:21,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399022941] [2024-09-21 12:26:21,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:26:21,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:26:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:22,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:26:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:22,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:26:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:22,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:22,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:22,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:22,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:22,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:22,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:22,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-21 12:26:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:23,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:23,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:23,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:23,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:23,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:23,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:24,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:24,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:24,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:24,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 60 proven. 486 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-09-21 12:26:24,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:26:24,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399022941] [2024-09-21 12:26:24,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399022941] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:26:24,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158033089] [2024-09-21 12:26:24,436 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 12:26:24,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:26:24,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:26:24,437 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) [2024-09-21 12:26:24,438 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-21 12:26:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:24,550 WARN L260 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 217 conjuncts are in the unsatisfiable core [2024-09-21 12:26:24,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:26:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 10 proven. 460 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2024-09-21 12:26:26,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:26:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 65 proven. 783 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-09-21 12:26:32,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158033089] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:26:32,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:26:32,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 30, 57] total 112 [2024-09-21 12:26:32,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100919552] [2024-09-21 12:26:32,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:26:32,190 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2024-09-21 12:26:32,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:26:32,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2024-09-21 12:26:32,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=12000, Unknown=0, NotChecked=0, Total=12432 [2024-09-21 12:26:32,193 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) [2024-09-21 12:26:36,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:26:36,616 INFO L93 Difference]: Finished difference Result 103 states and 152 transitions. [2024-09-21 12:26:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-21 12:26:36,616 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 [2024-09-21 12:26:36,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:26:36,618 INFO L225 Difference]: With dead ends: 103 [2024-09-21 12:26:36,618 INFO L226 Difference]: Without dead ends: 87 [2024-09-21 12:26:36,620 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4709 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1564, Invalid=21692, Unknown=0, NotChecked=0, Total=23256 [2024-09-21 12:26:36,621 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 146 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 4968 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 5133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 4968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-09-21 12:26:36,621 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1322 Invalid, 5133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 4968 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-09-21 12:26:36,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-09-21 12:26:36,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 78. [2024-09-21 12:26:36,646 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) [2024-09-21 12:26:36,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 108 transitions. [2024-09-21 12:26:36,647 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 108 transitions. Word has length 135 [2024-09-21 12:26:36,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:26:36,647 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 108 transitions. [2024-09-21 12:26:36,648 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) [2024-09-21 12:26:36,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:26:36,648 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 108 transitions. [2024-09-21 12:26:36,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-09-21 12:26:36,649 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:26:36,649 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] [2024-09-21 12:26:36,672 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-21 12:26:36,853 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 [2024-09-21 12:26:36,854 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:26:36,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:26:36,854 INFO L85 PathProgramCache]: Analyzing trace with hash -395770423, now seen corresponding path program 14 times [2024-09-21 12:26:36,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:26:36,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236864421] [2024-09-21 12:26:36,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:26:36,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:26:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:37,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:26:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:37,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:26:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:37,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:37,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:37,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-21 12:26:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:37,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:37,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:38,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:38,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:38,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:38,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:38,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:38,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:38,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:39,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:39,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:39,238 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 48 proven. 336 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-09-21 12:26:39,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:26:39,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236864421] [2024-09-21 12:26:39,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236864421] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:26:39,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999119328] [2024-09-21 12:26:39,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 12:26:39,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:26:39,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:26:39,241 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) [2024-09-21 12:26:39,242 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-21 12:26:39,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 12:26:39,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:26:39,356 WARN L260 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 181 conjuncts are in the unsatisfiable core [2024-09-21 12:26:39,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:26:40,808 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 11 proven. 321 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-09-21 12:26:40,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:26:45,376 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 44 proven. 528 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-09-21 12:26:45,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999119328] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:26:45,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:26:45,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 32, 48] total 98 [2024-09-21 12:26:45,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924703026] [2024-09-21 12:26:45,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:26:45,377 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-09-21 12:26:45,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:26:45,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-09-21 12:26:45,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=9148, Unknown=0, NotChecked=0, Total=9506 [2024-09-21 12:26:45,380 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) [2024-09-21 12:26:48,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:26:48,670 INFO L93 Difference]: Finished difference Result 97 states and 139 transitions. [2024-09-21 12:26:48,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-21 12:26:48,670 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 [2024-09-21 12:26:48,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:26:48,672 INFO L225 Difference]: With dead ends: 97 [2024-09-21 12:26:48,672 INFO L226 Difference]: Without dead ends: 90 [2024-09-21 12:26:48,673 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3674 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1096, Invalid=16196, Unknown=0, NotChecked=0, Total=17292 [2024-09-21 12:26:48,674 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 166 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 3688 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.8s IncrementalHoareTripleChecker+Time [2024-09-21 12:26:48,674 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 1235 Invalid, 3919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 3688 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-09-21 12:26:48,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-09-21 12:26:48,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 81. [2024-09-21 12:26:48,700 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) [2024-09-21 12:26:48,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 113 transitions. [2024-09-21 12:26:48,702 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 113 transitions. Word has length 114 [2024-09-21 12:26:48,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:26:48,702 INFO L474 AbstractCegarLoop]: Abstraction has 81 states and 113 transitions. [2024-09-21 12:26:48,703 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) [2024-09-21 12:26:48,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:26:48,703 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 113 transitions. [2024-09-21 12:26:48,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-21 12:26:48,704 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:26:48,704 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] [2024-09-21 12:26:48,721 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-21 12:26:48,908 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 [2024-09-21 12:26:48,909 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:26:48,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:26:48,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1084266083, now seen corresponding path program 15 times [2024-09-21 12:26:48,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:26:48,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371382799] [2024-09-21 12:26:48,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:26:48,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:26:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:49,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:26:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:49,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:26:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:49,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:49,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:49,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-21 12:26:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:49,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:50,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:50,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:50,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:50,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:50,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:50,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:51,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:51,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:51,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:51,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:51,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:51,590 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 52 proven. 383 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-09-21 12:26:51,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:26:51,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371382799] [2024-09-21 12:26:51,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371382799] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:26:51,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118888793] [2024-09-21 12:26:51,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 12:26:51,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:26:51,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:26:51,593 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) [2024-09-21 12:26:51,594 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-21 12:26:51,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-21 12:26:51,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:26:51,733 WARN L260 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 193 conjuncts are in the unsatisfiable core [2024-09-21 12:26:51,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:26:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 12 proven. 367 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2024-09-21 12:26:53,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:26:58,495 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 47 proven. 611 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-09-21 12:26:58,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118888793] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:26:58,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:26:58,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 34, 51] total 104 [2024-09-21 12:26:58,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940655142] [2024-09-21 12:26:58,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:26:58,496 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-09-21 12:26:58,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:26:58,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-09-21 12:26:58,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=10332, Unknown=0, NotChecked=0, Total=10712 [2024-09-21 12:26:58,499 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) [2024-09-21 12:27:01,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:27:01,935 INFO L93 Difference]: Finished difference Result 100 states and 144 transitions. [2024-09-21 12:27:01,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-21 12:27:01,935 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 [2024-09-21 12:27:01,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:27:01,937 INFO L225 Difference]: With dead ends: 100 [2024-09-21 12:27:01,937 INFO L226 Difference]: Without dead ends: 93 [2024-09-21 12:27:01,939 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4142 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1197, Invalid=18263, Unknown=0, NotChecked=0, Total=19460 [2024-09-21 12:27:01,939 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 239 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 3782 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 3987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 3782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-09-21 12:27:01,939 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 1188 Invalid, 3987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 3782 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-09-21 12:27:01,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-21 12:27:01,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2024-09-21 12:27:01,967 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) [2024-09-21 12:27:01,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 118 transitions. [2024-09-21 12:27:01,968 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 118 transitions. Word has length 121 [2024-09-21 12:27:01,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:27:01,969 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 118 transitions. [2024-09-21 12:27:01,969 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) [2024-09-21 12:27:01,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:27:01,970 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 118 transitions. [2024-09-21 12:27:01,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-21 12:27:01,971 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:27:01,971 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] [2024-09-21 12:27:01,986 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-21 12:27:02,174 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 [2024-09-21 12:27:02,175 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:27:02,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:27:02,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1846777569, now seen corresponding path program 16 times [2024-09-21 12:27:02,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:27:02,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609644941] [2024-09-21 12:27:02,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:27:02,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:27:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:02,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:27:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:02,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:27:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:02,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:02,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:02,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-21 12:27:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:03,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:03,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:03,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:03,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:04,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:04,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:04,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:04,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:04,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:04,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:04,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:05,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:05,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 56 proven. 433 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2024-09-21 12:27:05,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:27:05,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609644941] [2024-09-21 12:27:05,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609644941] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:27:05,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978403719] [2024-09-21 12:27:05,236 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 12:27:05,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:27:05,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:27:05,238 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) [2024-09-21 12:27:05,239 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-21 12:27:05,367 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 12:27:05,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:27:05,378 WARN L260 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 205 conjuncts are in the unsatisfiable core [2024-09-21 12:27:05,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:27:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 13 proven. 416 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2024-09-21 12:27:07,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:27:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 50 proven. 700 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-09-21 12:27:12,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978403719] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:27:12,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:27:12,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 36, 54] total 110 [2024-09-21 12:27:12,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809561070] [2024-09-21 12:27:12,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:27:12,916 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2024-09-21 12:27:12,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:27:12,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2024-09-21 12:27:12,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=11588, Unknown=0, NotChecked=0, Total=11990 [2024-09-21 12:27:12,919 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) [2024-09-21 12:27:16,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:27:16,681 INFO L93 Difference]: Finished difference Result 103 states and 149 transitions. [2024-09-21 12:27:16,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-21 12:27:16,682 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 [2024-09-21 12:27:16,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:27:16,685 INFO L225 Difference]: With dead ends: 103 [2024-09-21 12:27:16,686 INFO L226 Difference]: Without dead ends: 96 [2024-09-21 12:27:16,689 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4640 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1302, Invalid=20454, Unknown=0, NotChecked=0, Total=21756 [2024-09-21 12:27:16,690 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 216 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 3920 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 4168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 3920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-09-21 12:27:16,691 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1236 Invalid, 4168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 3920 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-09-21 12:27:16,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-21 12:27:16,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 87. [2024-09-21 12:27:16,737 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) [2024-09-21 12:27:16,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 123 transitions. [2024-09-21 12:27:16,741 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 123 transitions. Word has length 128 [2024-09-21 12:27:16,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:27:16,741 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 123 transitions. [2024-09-21 12:27:16,741 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) [2024-09-21 12:27:16,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:27:16,742 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 123 transitions. [2024-09-21 12:27:16,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-09-21 12:27:16,747 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:27:16,747 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] [2024-09-21 12:27:16,774 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-21 12:27:16,948 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 [2024-09-21 12:27:16,948 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:27:16,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:27:16,948 INFO L85 PathProgramCache]: Analyzing trace with hash -709306135, now seen corresponding path program 17 times [2024-09-21 12:27:16,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:27:16,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818505700] [2024-09-21 12:27:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:27:16,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:27:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:17,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:27:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:17,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:27:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:17,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:17,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:18,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:18,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:18,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:18,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:18,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:18,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-21 12:27:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:19,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:19,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:19,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:20,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:20,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:20,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:20,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:20,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:21,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:21,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:21,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:21,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:21,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:21,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 80 proven. 796 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2024-09-21 12:27:21,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:27:21,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818505700] [2024-09-21 12:27:21,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818505700] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:27:21,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736192571] [2024-09-21 12:27:21,918 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 12:27:21,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:27:21,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:27:21,920 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) [2024-09-21 12:27:21,922 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-21 12:27:22,094 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2024-09-21 12:27:22,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:27:22,102 WARN L260 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 277 conjuncts are in the unsatisfiable core [2024-09-21 12:27:22,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:27:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 14 proven. 763 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2024-09-21 12:27:24,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:27:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 83 proven. 1345 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-09-21 12:27:34,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736192571] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:27:34,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:27:34,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 38, 72] total 141 [2024-09-21 12:27:34,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689975111] [2024-09-21 12:27:34,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:27:34,302 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2024-09-21 12:27:34,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:27:34,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2024-09-21 12:27:34,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=544, Invalid=19196, Unknown=0, NotChecked=0, Total=19740 [2024-09-21 12:27:34,306 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) [2024-09-21 12:27:40,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:27:40,901 INFO L93 Difference]: Finished difference Result 119 states and 180 transitions. [2024-09-21 12:27:40,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-21 12:27:40,902 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 [2024-09-21 12:27:40,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:27:40,903 INFO L225 Difference]: With dead ends: 119 [2024-09-21 12:27:40,903 INFO L226 Difference]: Without dead ends: 99 [2024-09-21 12:27:40,905 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7650 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=2288, Invalid=35154, Unknown=0, NotChecked=0, Total=37442 [2024-09-21 12:27:40,906 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 261 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 6522 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s 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, 3.4s IncrementalHoareTripleChecker+Time [2024-09-21 12:27:40,906 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1610 Invalid, 6940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 6522 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-09-21 12:27:40,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-21 12:27:40,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 90. [2024-09-21 12:27:40,941 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) [2024-09-21 12:27:40,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 128 transitions. [2024-09-21 12:27:40,942 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 128 transitions. Word has length 170 [2024-09-21 12:27:40,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:27:40,943 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 128 transitions. [2024-09-21 12:27:40,943 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) [2024-09-21 12:27:40,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:27:40,944 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 128 transitions. [2024-09-21 12:27:40,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-21 12:27:40,945 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:27:40,945 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] [2024-09-21 12:27:40,964 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-09-21 12:27:41,146 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 [2024-09-21 12:27:41,146 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:27:41,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:27:41,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1661807989, now seen corresponding path program 18 times [2024-09-21 12:27:41,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:27:41,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779875496] [2024-09-21 12:27:41,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:27:41,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:27:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:41,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:27:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:41,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:27:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:41,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:41,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:41,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-21 12:27:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:42,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:42,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:43,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:43,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:43,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:43,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:44,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:44,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:44,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:44,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:44,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:44,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:45,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:45,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:45,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:45,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 64 proven. 542 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2024-09-21 12:27:45,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:27:45,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779875496] [2024-09-21 12:27:45,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779875496] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:27:45,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763521378] [2024-09-21 12:27:45,292 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 12:27:45,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:27:45,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:27:45,294 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) [2024-09-21 12:27:45,296 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-21 12:27:45,473 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-21 12:27:45,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:27:45,479 WARN L260 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 228 conjuncts are in the unsatisfiable core [2024-09-21 12:27:45,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:27:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 36 proven. 538 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2024-09-21 12:27:47,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:27:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 57 proven. 899 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-09-21 12:27:55,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763521378] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:27:55,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:27:55,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 44, 64] total 127 [2024-09-21 12:27:55,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379701879] [2024-09-21 12:27:55,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:27:55,677 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2024-09-21 12:27:55,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:27:55,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2024-09-21 12:27:55,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=15519, Unknown=0, NotChecked=0, Total=16002 [2024-09-21 12:27:55,679 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) [2024-09-21 12:28:00,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:28:00,761 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2024-09-21 12:28:00,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-21 12:28:00,762 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 [2024-09-21 12:28:00,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:28:00,764 INFO L225 Difference]: With dead ends: 109 [2024-09-21 12:28:00,764 INFO L226 Difference]: Without dead ends: 102 [2024-09-21 12:28:00,766 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6169 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1702, Invalid=26690, Unknown=0, NotChecked=0, Total=28392 [2024-09-21 12:28:00,767 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 323 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 5087 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 5543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 5087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-09-21 12:28:00,768 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1673 Invalid, 5543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 5087 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-09-21 12:28:00,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-09-21 12:28:00,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 93. [2024-09-21 12:28:00,810 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) [2024-09-21 12:28:00,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 133 transitions. [2024-09-21 12:28:00,811 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 133 transitions. Word has length 142 [2024-09-21 12:28:00,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:28:00,812 INFO L474 AbstractCegarLoop]: Abstraction has 93 states and 133 transitions. [2024-09-21 12:28:00,812 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) [2024-09-21 12:28:00,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:00,813 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 133 transitions. [2024-09-21 12:28:00,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-09-21 12:28:00,814 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:28:00,815 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] [2024-09-21 12:28:00,838 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-21 12:28:01,018 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 [2024-09-21 12:28:01,019 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:28:01,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:01,019 INFO L85 PathProgramCache]: Analyzing trace with hash 882713721, now seen corresponding path program 19 times [2024-09-21 12:28:01,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:28:01,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711319721] [2024-09-21 12:28:01,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:01,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:28:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:01,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:28:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:01,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:28:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:02,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:02,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:02,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:02,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:02,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:02,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:02,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:02,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:02,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-21 12:28:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:03,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:03,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:04,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:04,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:05,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:05,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:05,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:05,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:06,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:06,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:06,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:06,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:06,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:07,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:07,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:07,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:07,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 92 proven. 1018 refuted. 0 times theorem prover too weak. 1067 trivial. 0 not checked. [2024-09-21 12:28:07,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:28:07,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711319721] [2024-09-21 12:28:07,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711319721] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:28:07,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119235336] [2024-09-21 12:28:07,494 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 12:28:07,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:28:07,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:28:07,496 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) [2024-09-21 12:28:07,497 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-21 12:28:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:07,713 WARN L260 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 313 conjuncts are in the unsatisfiable core [2024-09-21 12:28:07,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:28:10,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 16 proven. 980 refuted. 0 times theorem prover too weak. 1181 trivial. 0 not checked. [2024-09-21 12:28:10,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:28:23,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 95 proven. 1753 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2024-09-21 12:28:23,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119235336] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:28:23,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:28:23,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 42, 81] total 158 [2024-09-21 12:28:23,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151591385] [2024-09-21 12:28:23,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:28:23,133 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2024-09-21 12:28:23,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:28:23,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2024-09-21 12:28:23,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=612, Invalid=24194, Unknown=0, NotChecked=0, Total=24806 [2024-09-21 12:28:23,137 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) [2024-09-21 12:28:32,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:28:32,091 INFO L93 Difference]: Finished difference Result 127 states and 194 transitions. [2024-09-21 12:28:32,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-09-21 12:28:32,091 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 [2024-09-21 12:28:32,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:28:32,093 INFO L225 Difference]: With dead ends: 127 [2024-09-21 12:28:32,093 INFO L226 Difference]: Without dead ends: 105 [2024-09-21 12:28:32,096 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9581 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=2736, Invalid=44136, Unknown=0, NotChecked=0, Total=46872 [2024-09-21 12:28:32,096 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 340 mSDsluCounter, 2259 mSDsCounter, 0 mSdLazyCounter, 9501 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 2291 SdHoareTripleChecker+Invalid, 10018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 9501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-09-21 12:28:32,096 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 2291 Invalid, 10018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 9501 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-09-21 12:28:32,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-09-21 12:28:32,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 96. [2024-09-21 12:28:32,139 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) [2024-09-21 12:28:32,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 138 transitions. [2024-09-21 12:28:32,140 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 138 transitions. Word has length 191 [2024-09-21 12:28:32,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:28:32,140 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 138 transitions. [2024-09-21 12:28:32,141 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) [2024-09-21 12:28:32,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:32,141 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 138 transitions. [2024-09-21 12:28:32,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-09-21 12:28:32,142 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:28:32,142 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] [2024-09-21 12:28:32,160 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-21 12:28:32,343 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 [2024-09-21 12:28:32,343 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:28:32,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:32,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1086059211, now seen corresponding path program 20 times [2024-09-21 12:28:32,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:28:32,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126024506] [2024-09-21 12:28:32,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:32,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:28:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:32,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:28:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:32,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:28:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:32,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-21 12:28:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:34,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:34,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:36,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:36,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:36,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:36,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:37,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:37,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:37,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:37,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:37,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:37,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:37,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:37,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 72 proven. 663 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2024-09-21 12:28:37,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:28:37,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126024506] [2024-09-21 12:28:37,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126024506] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:28:37,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310984550] [2024-09-21 12:28:37,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 12:28:37,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:28:37,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:28:37,919 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) [2024-09-21 12:28:37,920 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-21 12:28:38,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 12:28:38,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:28:38,111 WARN L260 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 253 conjuncts are in the unsatisfiable core [2024-09-21 12:28:38,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:28:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 17 proven. 642 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-09-21 12:28:40,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:28:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 62 proven. 1116 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-09-21 12:28:47,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310984550] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:28:47,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:28:47,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 44, 66] total 134 [2024-09-21 12:28:47,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863330682] [2024-09-21 12:28:47,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:28:47,530 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2024-09-21 12:28:47,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:28:47,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2024-09-21 12:28:47,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=17332, Unknown=0, NotChecked=0, Total=17822 [2024-09-21 12:28:47,533 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) [2024-09-21 12:28:52,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:28:52,534 INFO L93 Difference]: Finished difference Result 115 states and 169 transitions. [2024-09-21 12:28:52,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-09-21 12:28:52,534 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 [2024-09-21 12:28:52,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:28:52,536 INFO L225 Difference]: With dead ends: 115 [2024-09-21 12:28:52,536 INFO L226 Difference]: Without dead ends: 108 [2024-09-21 12:28:52,538 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6908 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1762, Invalid=30458, Unknown=0, NotChecked=0, Total=32220 [2024-09-21 12:28:52,538 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 388 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 6618 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 6919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 6618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-09-21 12:28:52,539 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 2187 Invalid, 6919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 6618 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-09-21 12:28:52,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-09-21 12:28:52,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 99. [2024-09-21 12:28:52,572 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) [2024-09-21 12:28:52,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 143 transitions. [2024-09-21 12:28:52,573 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 143 transitions. Word has length 156 [2024-09-21 12:28:52,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:28:52,573 INFO L474 AbstractCegarLoop]: Abstraction has 99 states and 143 transitions. [2024-09-21 12:28:52,574 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) [2024-09-21 12:28:52,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:52,574 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 143 transitions. [2024-09-21 12:28:52,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-09-21 12:28:52,575 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:28:52,575 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] [2024-09-21 12:28:52,589 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-21 12:28:52,779 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 [2024-09-21 12:28:52,780 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:28:52,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:52,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1019719079, now seen corresponding path program 21 times [2024-09-21 12:28:52,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:28:52,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45782818] [2024-09-21 12:28:52,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:52,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:28:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:53,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:28:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:53,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:28:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:53,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:53,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:53,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:54,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:54,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:54,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:54,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:54,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:54,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:54,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-21 12:28:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:55,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:55,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:56,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:56,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:56,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:57,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:57,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:57,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:57,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:58,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:58,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:58,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:58,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:58,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:58,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:59,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:59,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:59,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:59,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2732 backedges. 104 proven. 1267 refuted. 0 times theorem prover too weak. 1361 trivial. 0 not checked. [2024-09-21 12:28:59,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:28:59,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45782818] [2024-09-21 12:28:59,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45782818] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:28:59,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539679359] [2024-09-21 12:28:59,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 12:28:59,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:28:59,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:28:59,379 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) [2024-09-21 12:28:59,380 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-21 12:28:59,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2024-09-21 12:28:59,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:28:59,633 WARN L260 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 349 conjuncts are in the unsatisfiable core [2024-09-21 12:28:59,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:29:02,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2732 backedges. 18 proven. 1224 refuted. 0 times theorem prover too weak. 1490 trivial. 0 not checked. [2024-09-21 12:29:02,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:29:15,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2732 backedges. 107 proven. 2215 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2024-09-21 12:29:15,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539679359] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:29:15,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:29:15,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 46, 90] total 175 [2024-09-21 12:29:15,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84542780] [2024-09-21 12:29:15,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:29:15,240 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 175 states [2024-09-21 12:29:15,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:29:15,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2024-09-21 12:29:15,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=680, Invalid=29770, Unknown=0, NotChecked=0, Total=30450 [2024-09-21 12:29:15,243 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) [2024-09-21 12:29:24,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:29:24,208 INFO L93 Difference]: Finished difference Result 135 states and 208 transitions. [2024-09-21 12:29:24,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-09-21 12:29:24,208 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 [2024-09-21 12:29:24,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:29:24,210 INFO L225 Difference]: With dead ends: 135 [2024-09-21 12:29:24,210 INFO L226 Difference]: Without dead ends: 111 [2024-09-21 12:29:24,212 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11730 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=3220, Invalid=54140, Unknown=0, NotChecked=0, Total=57360 [2024-09-21 12:29:24,213 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 512 mSDsluCounter, 2533 mSDsCounter, 0 mSdLazyCounter, 10967 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 11605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 10967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-09-21 12:29:24,213 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 2567 Invalid, 11605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 10967 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-09-21 12:29:24,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-09-21 12:29:24,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 102. [2024-09-21 12:29:24,250 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) [2024-09-21 12:29:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 148 transitions. [2024-09-21 12:29:24,251 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 148 transitions. Word has length 212 [2024-09-21 12:29:24,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:29:24,252 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 148 transitions. [2024-09-21 12:29:24,252 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) [2024-09-21 12:29:24,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:29:24,252 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 148 transitions. [2024-09-21 12:29:24,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-09-21 12:29:24,253 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:29:24,253 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] [2024-09-21 12:29:24,267 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-09-21 12:29:24,454 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 [2024-09-21 12:29:24,454 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:29:24,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:29:24,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1710663391, now seen corresponding path program 22 times [2024-09-21 12:29:24,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:29:24,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736559762] [2024-09-21 12:29:24,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:29:24,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:29:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:25,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:29:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:25,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-21 12:29:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:25,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:29:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:25,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:29:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:25,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-21 12:29:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:25,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:29:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:26,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:29:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat