./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Fibonacci03.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 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/Fibonacci03.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 be0a584ba9648c80e7a0523ff51ba530f1926c55cecd3c62f2cee05fbbff42e3 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-11 20:24:54,748 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 20:24:54,827 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 20:24:54,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 20:24:54,831 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 20:24:54,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 20:24:54,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 20:24:54,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 20:24:54,859 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 20:24:54,860 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 20:24:54,860 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 20:24:54,860 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 20:24:54,861 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 20:24:54,864 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 20:24:54,864 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 20:24:54,864 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 20:24:54,865 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 20:24:54,865 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 20:24:54,865 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 20:24:54,865 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 20:24:54,866 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 20:24:54,867 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 20:24:54,867 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 20:24:54,867 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 20:24:54,868 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 20:24:54,869 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 20:24:54,869 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 20:24:54,869 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 20:24:54,869 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 20:24:54,870 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 20:24:54,870 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 20:24:54,870 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 20:24:54,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:24:54,871 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 20:24:54,871 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 20:24:54,872 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 20:24:54,872 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 20:24:54,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 20:24:54,873 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 20:24:54,873 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 20:24:54,873 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 20:24:54,874 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 20:24:54,874 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be0a584ba9648c80e7a0523ff51ba530f1926c55cecd3c62f2cee05fbbff42e3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 20:24:55,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 20:24:55,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 20:24:55,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 20:24:55,136 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 20:24:55,136 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 20:24:55,137 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/Fibonacci03.c [2024-09-11 20:24:56,523 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 20:24:56,705 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 20:24:56,705 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Fibonacci03.c [2024-09-11 20:24:56,712 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/5a781197d/0b93e34a35a14a08854b91c16fc288d5/FLAG5f6d2677e [2024-09-11 20:24:57,111 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/5a781197d/0b93e34a35a14a08854b91c16fc288d5 [2024-09-11 20:24:57,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 20:24:57,115 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 20:24:57,116 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 20:24:57,121 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 20:24:57,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 20:24:57,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:24:57" (1/1) ... [2024-09-11 20:24:57,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c459a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:57, skipping insertion in model container [2024-09-11 20:24:57,136 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:24:57" (1/1) ... [2024-09-11 20:24:57,164 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 20:24:57,334 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Fibonacci03.c[788,801] [2024-09-11 20:24:57,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:24:57,353 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 20:24:57,368 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Fibonacci03.c[788,801] [2024-09-11 20:24:57,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:24:57,384 INFO L204 MainTranslator]: Completed translation [2024-09-11 20:24:57,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:57 WrapperNode [2024-09-11 20:24:57,385 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 20:24:57,386 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 20:24:57,386 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 20:24:57,386 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 20:24:57,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:57" (1/1) ... [2024-09-11 20:24:57,399 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:57" (1/1) ... [2024-09-11 20:24:57,417 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2024-09-11 20:24:57,418 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 20:24:57,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 20:24:57,420 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 20:24:57,420 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 20:24:57,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:57" (1/1) ... [2024-09-11 20:24:57,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:57" (1/1) ... [2024-09-11 20:24:57,431 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:57" (1/1) ... [2024-09-11 20:24:57,446 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]. [2024-09-11 20:24:57,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:57" (1/1) ... [2024-09-11 20:24:57,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:57" (1/1) ... [2024-09-11 20:24:57,450 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:57" (1/1) ... [2024-09-11 20:24:57,452 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:57" (1/1) ... [2024-09-11 20:24:57,453 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:57" (1/1) ... [2024-09-11 20:24:57,454 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:57" (1/1) ... [2024-09-11 20:24:57,455 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 20:24:57,458 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 20:24:57,458 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 20:24:57,458 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 20:24:57,460 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:57" (1/1) ... [2024-09-11 20:24:57,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:24:57,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:57,489 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) [2024-09-11 20:24:57,493 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 [2024-09-11 20:24:57,531 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-09-11 20:24:57,531 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-09-11 20:24:57,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 20:24:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 20:24:57,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 20:24:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 20:24:57,584 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 20:24:57,586 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 20:24:57,692 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-09-11 20:24:57,693 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 20:24:57,716 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 20:24:57,716 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-11 20:24:57,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:24:57 BoogieIcfgContainer [2024-09-11 20:24:57,717 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 20:24:57,719 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 20:24:57,719 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 20:24:57,722 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 20:24:57,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 08:24:57" (1/3) ... [2024-09-11 20:24:57,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba1c11d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:24:57, skipping insertion in model container [2024-09-11 20:24:57,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:57" (2/3) ... [2024-09-11 20:24:57,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba1c11d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:24:57, skipping insertion in model container [2024-09-11 20:24:57,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:24:57" (3/3) ... [2024-09-11 20:24:57,726 INFO L112 eAbstractionObserver]: Analyzing ICFG Fibonacci03.c [2024-09-11 20:24:57,742 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 20:24:57,743 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 20:24:57,791 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 20:24:57,800 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;@13f45999, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 20:24:57,801 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 20:24:57,805 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-11 20:24:57,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-11 20:24:57,817 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:57,817 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:57,818 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:57,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:57,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1216674335, now seen corresponding path program 1 times [2024-09-11 20:24:57,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:57,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008233698] [2024-09-11 20:24:57,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:57,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:58,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:58,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 20:24:58,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:58,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008233698] [2024-09-11 20:24:58,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008233698] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 20:24:58,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 20:24:58,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-11 20:24:58,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903991456] [2024-09-11 20:24:58,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 20:24:58,123 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 20:24:58,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:58,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 20:24:58,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 20:24:58,148 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-11 20:24:58,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:58,252 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2024-09-11 20:24:58,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 20:24:58,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-11 20:24:58,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:58,262 INFO L225 Difference]: With dead ends: 28 [2024-09-11 20:24:58,263 INFO L226 Difference]: Without dead ends: 20 [2024-09-11 20:24:58,266 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 20:24:58,269 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:58,270 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 37 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:24:58,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-11 20:24:58,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-09-11 20:24:58,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-11 20:24:58,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-09-11 20:24:58,301 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2024-09-11 20:24:58,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:58,302 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-09-11 20:24:58,302 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-11 20:24:58,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:58,303 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-09-11 20:24:58,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-11 20:24:58,304 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:58,304 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:58,304 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 20:24:58,304 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:58,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:58,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1629096597, now seen corresponding path program 1 times [2024-09-11 20:24:58,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:58,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986783054] [2024-09-11 20:24:58,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:58,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:58,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 20:24:58,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:58,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986783054] [2024-09-11 20:24:58,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986783054] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 20:24:58,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 20:24:58,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-11 20:24:58,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963216447] [2024-09-11 20:24:58,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 20:24:58,396 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 20:24:58,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:58,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 20:24:58,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 20:24:58,398 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-11 20:24:58,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:58,448 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2024-09-11 20:24:58,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-11 20:24:58,448 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-11 20:24:58,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:58,449 INFO L225 Difference]: With dead ends: 24 [2024-09-11 20:24:58,449 INFO L226 Difference]: Without dead ends: 20 [2024-09-11 20:24:58,450 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 20:24:58,451 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:58,451 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 32 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 20:24:58,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-11 20:24:58,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-09-11 20:24:58,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-11 20:24:58,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-09-11 20:24:58,459 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2024-09-11 20:24:58,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:58,459 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-09-11 20:24:58,459 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-11 20:24:58,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:58,460 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-09-11 20:24:58,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-11 20:24:58,461 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:58,461 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:58,461 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-11 20:24:58,465 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:58,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:58,465 INFO L85 PathProgramCache]: Analyzing trace with hash 161002844, now seen corresponding path program 1 times [2024-09-11 20:24:58,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:58,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969517126] [2024-09-11 20:24:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:58,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:58,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:58,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:58,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-11 20:24:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:58,713 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 20:24:58,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:58,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969517126] [2024-09-11 20:24:58,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969517126] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:58,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339273244] [2024-09-11 20:24:58,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:58,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:58,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:58,720 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) [2024-09-11 20:24:58,722 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-11 20:24:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:58,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-11 20:24:58,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:58,867 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 20:24:58,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 20:24:59,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339273244] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:59,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:59,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 13 [2024-09-11 20:24:59,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074793648] [2024-09-11 20:24:59,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:59,094 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-11 20:24:59,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:59,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-11 20:24:59,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-09-11 20:24:59,096 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 states have internal predecessors, (35), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-11 20:24:59,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:59,304 INFO L93 Difference]: Finished difference Result 46 states and 69 transitions. [2024-09-11 20:24:59,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-11 20:24:59,304 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 states have internal predecessors, (35), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) Word has length 23 [2024-09-11 20:24:59,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:59,306 INFO L225 Difference]: With dead ends: 46 [2024-09-11 20:24:59,306 INFO L226 Difference]: Without dead ends: 29 [2024-09-11 20:24:59,307 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-09-11 20:24:59,308 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:59,308 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 57 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:24:59,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-11 20:24:59,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-11 20:24:59,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-09-11 20:24:59,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 41 transitions. [2024-09-11 20:24:59,320 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 41 transitions. Word has length 23 [2024-09-11 20:24:59,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:59,320 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 41 transitions. [2024-09-11 20:24:59,321 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 states have internal predecessors, (35), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-11 20:24:59,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:59,322 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2024-09-11 20:24:59,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-09-11 20:24:59,325 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:59,325 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:59,341 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-11 20:24:59,526 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:59,526 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:59,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:59,527 INFO L85 PathProgramCache]: Analyzing trace with hash 596043763, now seen corresponding path program 1 times [2024-09-11 20:24:59,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:59,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463240632] [2024-09-11 20:24:59,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:59,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:59,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:24:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:59,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:59,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:59,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:24:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:59,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:24:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:59,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:59,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:24:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:59,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:59,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:24:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:59,880 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 44 proven. 63 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-09-11 20:24:59,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:59,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463240632] [2024-09-11 20:24:59,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463240632] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:59,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476529319] [2024-09-11 20:24:59,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:59,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:59,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:59,884 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) [2024-09-11 20:24:59,885 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-11 20:24:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:59,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-11 20:24:59,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:00,028 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 16 proven. 75 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-09-11 20:25:00,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:00,449 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 16 proven. 82 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-11 20:25:00,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476529319] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:00,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:00,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 9] total 18 [2024-09-11 20:25:00,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158915676] [2024-09-11 20:25:00,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:00,451 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-11 20:25:00,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:00,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-11 20:25:00,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2024-09-11 20:25:00,457 INFO L87 Difference]: Start difference. First operand 29 states and 41 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 11 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 11 states have call predecessors, (18), 11 states have call successors, (18) [2024-09-11 20:25:00,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:00,685 INFO L93 Difference]: Finished difference Result 73 states and 123 transitions. [2024-09-11 20:25:00,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-11 20:25:00,686 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 11 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 11 states have call predecessors, (18), 11 states have call successors, (18) Word has length 65 [2024-09-11 20:25:00,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:00,690 INFO L225 Difference]: With dead ends: 73 [2024-09-11 20:25:00,691 INFO L226 Difference]: Without dead ends: 45 [2024-09-11 20:25:00,692 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2024-09-11 20:25:00,693 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:00,694 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 79 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:25:00,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-11 20:25:00,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2024-09-11 20:25:00,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (25), 9 states have call predecessors, (25), 7 states have call successors, (25) [2024-09-11 20:25:00,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 65 transitions. [2024-09-11 20:25:00,715 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 65 transitions. Word has length 65 [2024-09-11 20:25:00,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:00,716 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 65 transitions. [2024-09-11 20:25:00,716 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 11 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 11 states have call predecessors, (18), 11 states have call successors, (18) [2024-09-11 20:25:00,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:00,717 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 65 transitions. [2024-09-11 20:25:00,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-09-11 20:25:00,724 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:00,724 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 17, 12, 12, 12, 12, 12, 12, 12, 8, 5, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:00,741 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-11 20:25:00,925 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 [2024-09-11 20:25:00,925 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:00,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:00,926 INFO L85 PathProgramCache]: Analyzing trace with hash 37710545, now seen corresponding path program 2 times [2024-09-11 20:25:00,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:00,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847590376] [2024-09-11 20:25:00,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:00,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:25:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-11 20:25:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-11 20:25:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-11 20:25:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-11 20:25:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 253 proven. 368 refuted. 0 times theorem prover too weak. 979 trivial. 0 not checked. [2024-09-11 20:25:01,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:01,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847590376] [2024-09-11 20:25:01,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847590376] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:01,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584253089] [2024-09-11 20:25:01,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 20:25:01,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:01,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:01,649 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) [2024-09-11 20:25:01,651 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-11 20:25:01,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 20:25:01,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:25:01,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-11 20:25:01,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:01,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 67 proven. 459 refuted. 0 times theorem prover too weak. 1074 trivial. 0 not checked. [2024-09-11 20:25:01,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:02,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 67 proven. 485 refuted. 0 times theorem prover too weak. 1048 trivial. 0 not checked. [2024-09-11 20:25:02,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584253089] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:02,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:02,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 13] total 23 [2024-09-11 20:25:02,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225099637] [2024-09-11 20:25:02,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:02,954 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-11 20:25:02,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:02,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-11 20:25:02,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2024-09-11 20:25:02,955 INFO L87 Difference]: Start difference. First operand 42 states and 65 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 15 states have call successors, (18), 1 states have call predecessors, (18), 10 states have return successors, (26), 13 states have call predecessors, (26), 15 states have call successors, (26) [2024-09-11 20:25:03,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:03,366 INFO L93 Difference]: Finished difference Result 113 states and 222 transitions. [2024-09-11 20:25:03,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-11 20:25:03,367 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 15 states have call successors, (18), 1 states have call predecessors, (18), 10 states have return successors, (26), 13 states have call predecessors, (26), 15 states have call successors, (26) Word has length 171 [2024-09-11 20:25:03,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:03,369 INFO L225 Difference]: With dead ends: 113 [2024-09-11 20:25:03,369 INFO L226 Difference]: Without dead ends: 72 [2024-09-11 20:25:03,371 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 384 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=438, Invalid=1122, Unknown=0, NotChecked=0, Total=1560 [2024-09-11 20:25:03,372 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 75 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:03,373 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 94 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 20:25:03,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-09-11 20:25:03,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2024-09-11 20:25:03,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 42 states have internal predecessors, (51), 11 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (37), 13 states have call predecessors, (37), 11 states have call successors, (37) [2024-09-11 20:25:03,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 99 transitions. [2024-09-11 20:25:03,391 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 99 transitions. Word has length 171 [2024-09-11 20:25:03,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:03,392 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 99 transitions. [2024-09-11 20:25:03,392 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 15 states have call successors, (18), 1 states have call predecessors, (18), 10 states have return successors, (26), 13 states have call predecessors, (26), 15 states have call successors, (26) [2024-09-11 20:25:03,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:03,394 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 99 transitions. [2024-09-11 20:25:03,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-09-11 20:25:03,402 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:03,402 INFO L216 NwaCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:03,419 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-11 20:25:03,602 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 [2024-09-11 20:25:03,603 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:03,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:03,604 INFO L85 PathProgramCache]: Analyzing trace with hash -848143564, now seen corresponding path program 3 times [2024-09-11 20:25:03,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:03,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922701564] [2024-09-11 20:25:03,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:03,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:03,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:25:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-11 20:25:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-11 20:25:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-11 20:25:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-11 20:25:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-11 20:25:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:04,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-11 20:25:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:05,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:05,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:05,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-11 20:25:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:05,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:05,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:05,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:05,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:05,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-11 20:25:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:05,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:05,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:05,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:05,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:05,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:05,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-11 20:25:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:05,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:05,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:05,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:05,109 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 844 proven. 1612 refuted. 0 times theorem prover too weak. 4664 trivial. 0 not checked. [2024-09-11 20:25:05,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:05,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922701564] [2024-09-11 20:25:05,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922701564] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:05,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660768253] [2024-09-11 20:25:05,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 20:25:05,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:05,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:05,115 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) [2024-09-11 20:25:05,116 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-11 20:25:05,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-09-11 20:25:05,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:25:05,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-11 20:25:05,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:05,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 1019 proven. 219 refuted. 0 times theorem prover too weak. 5882 trivial. 0 not checked. [2024-09-11 20:25:05,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:06,794 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 1025 proven. 245 refuted. 0 times theorem prover too weak. 5850 trivial. 0 not checked. [2024-09-11 20:25:06,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660768253] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:06,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:06,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 9, 13] total 32 [2024-09-11 20:25:06,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228187196] [2024-09-11 20:25:06,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:06,796 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-11 20:25:06,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:06,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-11 20:25:06,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=760, Unknown=0, NotChecked=0, Total=992 [2024-09-11 20:25:06,798 INFO L87 Difference]: Start difference. First operand 62 states and 99 transitions. Second operand has 32 states, 32 states have (on average 2.4375) internal successors, (78), 32 states have internal predecessors, (78), 17 states have call successors, (25), 1 states have call predecessors, (25), 13 states have return successors, (37), 28 states have call predecessors, (37), 17 states have call successors, (37) [2024-09-11 20:25:07,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:07,388 INFO L93 Difference]: Finished difference Result 186 states and 399 transitions. [2024-09-11 20:25:07,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-11 20:25:07,389 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.4375) internal successors, (78), 32 states have internal predecessors, (78), 17 states have call successors, (25), 1 states have call predecessors, (25), 13 states have return successors, (37), 28 states have call predecessors, (37), 17 states have call successors, (37) Word has length 351 [2024-09-11 20:25:07,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:07,395 INFO L225 Difference]: With dead ends: 186 [2024-09-11 20:25:07,395 INFO L226 Difference]: Without dead ends: 125 [2024-09-11 20:25:07,401 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 790 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=717, Invalid=2363, Unknown=0, NotChecked=0, Total=3080 [2024-09-11 20:25:07,403 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 169 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:07,403 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 149 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 20:25:07,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-09-11 20:25:07,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 107. [2024-09-11 20:25:07,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 76 states have (on average 1.118421052631579) internal successors, (85), 73 states have internal predecessors, (85), 20 states have call successors, (20), 15 states have call predecessors, (20), 10 states have return successors, (51), 18 states have call predecessors, (51), 20 states have call successors, (51) [2024-09-11 20:25:07,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 156 transitions. [2024-09-11 20:25:07,430 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 156 transitions. Word has length 351 [2024-09-11 20:25:07,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:07,431 INFO L474 AbstractCegarLoop]: Abstraction has 107 states and 156 transitions. [2024-09-11 20:25:07,433 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.4375) internal successors, (78), 32 states have internal predecessors, (78), 17 states have call successors, (25), 1 states have call predecessors, (25), 13 states have return successors, (37), 28 states have call predecessors, (37), 17 states have call successors, (37) [2024-09-11 20:25:07,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:07,434 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 156 transitions. [2024-09-11 20:25:07,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 747 [2024-09-11 20:25:07,452 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:07,452 INFO L216 NwaCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:07,469 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-11 20:25:07,656 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 [2024-09-11 20:25:07,657 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:07,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:07,657 INFO L85 PathProgramCache]: Analyzing trace with hash -600231419, now seen corresponding path program 4 times [2024-09-11 20:25:07,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:07,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302514637] [2024-09-11 20:25:07,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:07,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:16,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:25:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:19,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:20,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:20,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:20,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:20,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-11 20:25:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-11 20:25:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-11 20:25:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-11 20:25:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-11 20:25:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-11 20:25:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-11 20:25:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-11 20:25:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-11 20:25:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:21,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-11 20:25:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-11 20:25:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-11 20:25:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2024-09-11 20:25:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-11 20:25:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-11 20:25:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-11 20:25:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-11 20:25:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-11 20:25:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-11 20:25:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-11 20:25:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-11 20:25:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2024-09-11 20:25:23,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:23,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302514637] [2024-09-11 20:25:23,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302514637] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:23,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382427225] [2024-09-11 20:25:23,224 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 20:25:23,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:23,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:23,226 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) [2024-09-11 20:25:23,227 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-11 20:25:23,484 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 20:25:23,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:25:23,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 220 conjuncts are in the unsatisfiable core [2024-09-11 20:25:23,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2024-09-11 20:25:24,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:26:48,761 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2024-09-11 20:26:48,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382427225] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:26:48,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:26:48,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 36 [2024-09-11 20:26:48,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146725415] [2024-09-11 20:26:48,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:26:48,763 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-11 20:26:48,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:26:48,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-11 20:26:48,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260 [2024-09-11 20:26:48,765 INFO L87 Difference]: Start difference. First operand 107 states and 156 transitions. Second operand has 36 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 19 states have internal predecessors, (42), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (24), 24 states have call predecessors, (24), 8 states have call successors, (24) [2024-09-11 20:26:49,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:26:49,051 INFO L93 Difference]: Finished difference Result 137 states and 208 transitions. [2024-09-11 20:26:49,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-11 20:26:49,052 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 19 states have internal predecessors, (42), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (24), 24 states have call predecessors, (24), 8 states have call successors, (24) Word has length 746 [2024-09-11 20:26:49,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:26:49,055 INFO L225 Difference]: With dead ends: 137 [2024-09-11 20:26:49,055 INFO L226 Difference]: Without dead ends: 0 [2024-09-11 20:26:49,057 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1936 GetRequests, 1677 SyntacticMatches, 218 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5811 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=415, Invalid=1391, Unknown=0, NotChecked=0, Total=1806 [2024-09-11 20:26:49,057 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 20:26:49,058 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 402 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 20:26:49,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-11 20:26:49,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-11 20:26:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-11 20:26:49,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-11 20:26:49,059 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 746 [2024-09-11 20:26:49,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:26:49,059 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-11 20:26:49,059 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 19 states have internal predecessors, (42), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (24), 24 states have call predecessors, (24), 8 states have call successors, (24) [2024-09-11 20:26:49,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:49,060 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-11 20:26:49,060 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-11 20:26:49,062 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-11 20:26:49,077 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-11 20:26:49,263 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 [2024-09-11 20:26:49,266 INFO L408 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2024-09-11 20:26:49,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-11 20:26:51,395 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-11 20:26:51,420 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-11 20:26:51,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 08:26:51 BoogieIcfgContainer [2024-09-11 20:26:51,422 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-11 20:26:51,423 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-11 20:26:51,423 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-11 20:26:51,423 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-11 20:26:51,423 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:24:57" (3/4) ... [2024-09-11 20:26:51,425 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-11 20:26:51,428 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2024-09-11 20:26:51,432 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-09-11 20:26:51,432 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-09-11 20:26:51,432 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-11 20:26:51,432 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-11 20:26:51,511 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-11 20:26:51,514 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-11 20:26:51,515 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-11 20:26:51,515 INFO L158 Benchmark]: Toolchain (without parser) took 114399.86ms. Allocated memory was 172.0MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 140.3MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 76.5MB. Max. memory is 16.1GB. [2024-09-11 20:26:51,515 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 127.9MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 20:26:51,516 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.10ms. Allocated memory is still 172.0MB. Free memory was 140.3MB in the beginning and 129.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-11 20:26:51,516 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.59ms. Allocated memory is still 172.0MB. Free memory was 129.2MB in the beginning and 127.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-11 20:26:51,516 INFO L158 Benchmark]: Boogie Preprocessor took 38.22ms. Allocated memory is still 172.0MB. Free memory was 127.1MB in the beginning and 126.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 20:26:51,516 INFO L158 Benchmark]: RCFGBuilder took 259.13ms. Allocated memory is still 172.0MB. Free memory was 126.0MB in the beginning and 114.5MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-11 20:26:51,517 INFO L158 Benchmark]: TraceAbstraction took 113703.86ms. Allocated memory was 172.0MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 114.5MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 753.9MB. Max. memory is 16.1GB. [2024-09-11 20:26:51,517 INFO L158 Benchmark]: Witness Printer took 91.93ms. Allocated memory is still 1.3GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-11 20:26:51,519 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 127.9MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.10ms. Allocated memory is still 172.0MB. Free memory was 140.3MB in the beginning and 129.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.59ms. Allocated memory is still 172.0MB. Free memory was 129.2MB in the beginning and 127.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.22ms. Allocated memory is still 172.0MB. Free memory was 127.1MB in the beginning and 126.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 259.13ms. Allocated memory is still 172.0MB. Free memory was 126.0MB in the beginning and 114.5MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 113703.86ms. Allocated memory was 172.0MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 114.5MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 753.9MB. Max. memory is 16.1GB. * Witness Printer took 91.93ms. Allocated memory is still 1.3GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 36]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 111.5s, OverallIterations: 7, TraceHistogramMax: 109, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.1s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 331 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 308 mSDsluCounter, 850 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 709 mSDsCounter, 415 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1308 IncrementalHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 415 mSolverCounterUnsat, 141 mSDtfsCounter, 1308 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3452 GetRequests, 3043 SyntacticMatches, 231 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7280 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=6, InterpolantAutomatonStates: 140, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 35 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 107.2s InterpolantComputationTime, 2733 NumberOfCodeBlocks, 2586 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 4072 ConstructedInterpolants, 0 QuantifiedInterpolants, 7852 SizeOfPredicates, 11 NumberOfNonLiveVariables, 2785 ConjunctsInSsa, 258 ConjunctsInUnsatCore, 17 InterpolantComputations, 2 PerfectInterpolantSequences, 107601/126051 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Location Invariant Derived location invariant: 1 - ProcedureContractResult [Line: 16]: Procedure Contract for fibonacci Derived contract for procedure fibonacci. Ensures: (((\old(n) < 1) || (0 < \result)) && (0 <= \result)) RESULT: Ultimate proved your program to be correct! [2024-09-11 20:26:51,555 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE