./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/MultCommutative-2.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/MultCommutative-2.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd --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 20:25:05,001 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 20:25:05,059 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 20:25:05,064 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 20:25:05,066 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 20:25:05,098 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 20:25:05,099 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 20:25:05,099 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 20:25:05,100 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 20:25:05,101 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 20:25:05,101 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 20:25:05,101 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 20:25:05,102 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 20:25:05,103 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 20:25:05,103 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 20:25:05,104 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 20:25:05,104 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 20:25:05,104 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 20:25:05,104 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 20:25:05,105 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 20:25:05,105 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 20:25:05,109 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 20:25:05,109 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 20:25:05,109 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 20:25:05,109 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 20:25:05,109 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 20:25:05,110 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 20:25:05,110 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 20:25:05,110 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 20:25:05,110 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 20:25:05,110 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 20:25:05,111 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 20:25:05,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:25:05,111 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 20:25:05,111 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 20:25:05,111 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 20:25:05,111 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 20:25:05,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 20:25:05,112 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 20:25:05,112 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 20:25:05,113 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 20:25:05,113 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 20:25:05,114 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 20:25:05,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 20:25:05,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 20:25:05,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 20:25:05,341 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 20:25:05,342 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 20:25:05,343 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/MultCommutative-2.c [2024-09-11 20:25:06,566 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 20:25:06,707 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 20:25:06,708 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/MultCommutative-2.c [2024-09-11 20:25:06,716 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/527ca5943/eb2fd65a565c48e0bf5f1274a48213e7/FLAG14ba507df [2024-09-11 20:25:06,729 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/527ca5943/eb2fd65a565c48e0bf5f1274a48213e7 [2024-09-11 20:25:06,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 20:25:06,732 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 20:25:06,734 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 20:25:06,734 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 20:25:06,738 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 20:25:06,739 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:25:06" (1/1) ... [2024-09-11 20:25:06,739 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b68c035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:06, skipping insertion in model container [2024-09-11 20:25:06,739 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:25:06" (1/1) ... [2024-09-11 20:25:06,755 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 20:25:06,886 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/MultCommutative-2.c[970,983] [2024-09-11 20:25:06,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:25:06,901 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 20:25:06,912 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/MultCommutative-2.c[970,983] [2024-09-11 20:25:06,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:25:06,930 INFO L204 MainTranslator]: Completed translation [2024-09-11 20:25:06,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:06 WrapperNode [2024-09-11 20:25:06,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 20:25:06,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 20:25:06,932 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 20:25:06,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 20:25:06,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:06" (1/1) ... [2024-09-11 20:25:06,943 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:06" (1/1) ... [2024-09-11 20:25:06,955 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-09-11 20:25:06,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 20:25:06,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 20:25:06,957 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 20:25:06,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 20:25:06,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:06" (1/1) ... [2024-09-11 20:25:06,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:06" (1/1) ... [2024-09-11 20:25:06,971 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:06" (1/1) ... [2024-09-11 20:25:06,981 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 20:25:06,981 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:06" (1/1) ... [2024-09-11 20:25:06,981 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:06" (1/1) ... [2024-09-11 20:25:06,983 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:06" (1/1) ... [2024-09-11 20:25:06,984 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:06" (1/1) ... [2024-09-11 20:25:06,985 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:06" (1/1) ... [2024-09-11 20:25:06,985 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:06" (1/1) ... [2024-09-11 20:25:06,989 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 20:25:06,989 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 20:25:06,989 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 20:25:06,989 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 20:25:06,990 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:06" (1/1) ... [2024-09-11 20:25:06,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:25:07,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:07,015 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 20:25:07,017 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 20:25:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 20:25:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2024-09-11 20:25:07,048 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2024-09-11 20:25:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 20:25:07,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 20:25:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 20:25:07,097 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 20:25:07,099 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 20:25:07,219 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-09-11 20:25:07,220 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 20:25:07,234 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 20:25:07,234 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-11 20:25:07,234 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:25:07 BoogieIcfgContainer [2024-09-11 20:25:07,235 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 20:25:07,236 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 20:25:07,236 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 20:25:07,239 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 20:25:07,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 08:25:06" (1/3) ... [2024-09-11 20:25:07,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c7feb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:25:07, skipping insertion in model container [2024-09-11 20:25:07,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:25:06" (2/3) ... [2024-09-11 20:25:07,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c7feb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:25:07, skipping insertion in model container [2024-09-11 20:25:07,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:25:07" (3/3) ... [2024-09-11 20:25:07,241 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2024-09-11 20:25:07,254 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 20:25:07,254 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 20:25:07,294 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 20:25:07,301 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;@69efab20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 20:25:07,301 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 20:25:07,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-11 20:25:07,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-11 20:25:07,314 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:07,314 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:07,315 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:07,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:07,320 INFO L85 PathProgramCache]: Analyzing trace with hash 647179642, now seen corresponding path program 1 times [2024-09-11 20:25:07,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:07,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041619512] [2024-09-11 20:25:07,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:07,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:07,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:07,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:07,682 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-11 20:25:07,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:07,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041619512] [2024-09-11 20:25:07,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041619512] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 20:25:07,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 20:25:07,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-11 20:25:07,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033077449] [2024-09-11 20:25:07,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 20:25:07,688 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-11 20:25:07,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:07,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-11 20:25:07,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-11 20:25:07,706 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-11 20:25:07,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:07,778 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2024-09-11 20:25:07,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-11 20:25:07,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-09-11 20:25:07,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:07,785 INFO L225 Difference]: With dead ends: 33 [2024-09-11 20:25:07,785 INFO L226 Difference]: Without dead ends: 25 [2024-09-11 20:25:07,787 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-11 20:25:07,790 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:07,790 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 122 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 20:25:07,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-11 20:25:07,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2024-09-11 20:25:07,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-11 20:25:07,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2024-09-11 20:25:07,829 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 19 [2024-09-11 20:25:07,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:07,830 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2024-09-11 20:25:07,830 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-11 20:25:07,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:07,831 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2024-09-11 20:25:07,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-11 20:25:07,833 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:07,834 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:07,834 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 20:25:07,834 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:07,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:07,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1580415186, now seen corresponding path program 1 times [2024-09-11 20:25:07,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:07,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711094417] [2024-09-11 20:25:07,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:07,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:08,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:08,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-11 20:25:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:08,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:25:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:08,126 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-11 20:25:08,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:08,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711094417] [2024-09-11 20:25:08,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711094417] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:08,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581121746] [2024-09-11 20:25:08,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:08,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:08,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:08,129 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 20:25:08,130 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 20:25:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:08,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-11 20:25:08,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 20:25:08,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:08,311 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-11 20:25:08,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581121746] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:08,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:08,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2024-09-11 20:25:08,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769479651] [2024-09-11 20:25:08,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:08,313 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-11 20:25:08,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:08,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-11 20:25:08,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-09-11 20:25:08,314 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-11 20:25:08,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:08,501 INFO L93 Difference]: Finished difference Result 51 states and 82 transitions. [2024-09-11 20:25:08,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-11 20:25:08,501 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 25 [2024-09-11 20:25:08,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:08,502 INFO L225 Difference]: With dead ends: 51 [2024-09-11 20:25:08,503 INFO L226 Difference]: Without dead ends: 26 [2024-09-11 20:25:08,503 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-09-11 20:25:08,504 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:08,505 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 110 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:25:08,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-11 20:25:08,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-09-11 20:25:08,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-11 20:25:08,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2024-09-11 20:25:08,511 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 25 [2024-09-11 20:25:08,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:08,513 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-09-11 20:25:08,513 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-11 20:25:08,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:08,514 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2024-09-11 20:25:08,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-11 20:25:08,515 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:08,515 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:08,527 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 20:25:08,715 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:08,716 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:08,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:08,716 INFO L85 PathProgramCache]: Analyzing trace with hash -590605896, now seen corresponding path program 1 times [2024-09-11 20:25:08,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:08,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073818282] [2024-09-11 20:25:08,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:08,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:08,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:08,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:08,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-11 20:25:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:08,788 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-11 20:25:08,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:08,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073818282] [2024-09-11 20:25:08,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073818282] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 20:25:08,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 20:25:08,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-11 20:25:08,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618360381] [2024-09-11 20:25:08,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 20:25:08,790 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 20:25:08,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:08,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 20:25:08,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 20:25:08,791 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-11 20:25:08,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:08,847 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2024-09-11 20:25:08,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-11 20:25:08,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2024-09-11 20:25:08,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:08,848 INFO L225 Difference]: With dead ends: 30 [2024-09-11 20:25:08,849 INFO L226 Difference]: Without dead ends: 26 [2024-09-11 20:25:08,850 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-11 20:25:08,851 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:08,852 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 43 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 20:25:08,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-11 20:25:08,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-11 20:25:08,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-11 20:25:08,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-09-11 20:25:08,862 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 26 [2024-09-11 20:25:08,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:08,863 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-09-11 20:25:08,863 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-11 20:25:08,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:08,864 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-09-11 20:25:08,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-11 20:25:08,865 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:08,865 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:08,865 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-11 20:25:08,866 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:08,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:08,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1136587750, now seen corresponding path program 1 times [2024-09-11 20:25:08,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:08,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162372313] [2024-09-11 20:25:08,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:08,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:08,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:08,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:08,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-11 20:25:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:08,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:08,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-11 20:25:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:08,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:08,987 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-11 20:25:08,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:08,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162372313] [2024-09-11 20:25:08,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162372313] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:08,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75644232] [2024-09-11 20:25:08,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:08,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:08,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:08,990 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 20:25:08,991 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 20:25:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:09,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-11 20:25:09,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:09,100 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-11 20:25:09,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-09-11 20:25:09,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75644232] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:09,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:09,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2024-09-11 20:25:09,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155931334] [2024-09-11 20:25:09,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:09,302 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-11 20:25:09,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:09,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-11 20:25:09,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-09-11 20:25:09,303 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 12 states, 10 states have (on average 3.4) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-11 20:25:09,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:09,368 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2024-09-11 20:25:09,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-11 20:25:09,368 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.4) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 46 [2024-09-11 20:25:09,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:09,369 INFO L225 Difference]: With dead ends: 45 [2024-09-11 20:25:09,369 INFO L226 Difference]: Without dead ends: 19 [2024-09-11 20:25:09,370 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 97 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-09-11 20:25:09,370 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:09,371 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 78 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 20:25:09,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-09-11 20:25:09,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-09-11 20:25:09,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-11 20:25:09,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-09-11 20:25:09,375 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 46 [2024-09-11 20:25:09,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:09,375 INFO L474 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-09-11 20:25:09,375 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.4) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-11 20:25:09,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:09,376 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-09-11 20:25:09,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-11 20:25:09,377 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:09,377 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:09,390 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-11 20:25:09,578 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 20:25:09,578 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:09,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:09,579 INFO L85 PathProgramCache]: Analyzing trace with hash 132154764, now seen corresponding path program 2 times [2024-09-11 20:25:09,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:09,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829272152] [2024-09-11 20:25:09,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:09,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:09,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:09,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:09,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-11 20:25:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:09,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:09,955 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 20:25:09,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:09,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829272152] [2024-09-11 20:25:09,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829272152] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:09,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226798136] [2024-09-11 20:25:09,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 20:25:09,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:09,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:09,960 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 20:25:09,963 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 20:25:09,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 20:25:09,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:25:09,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-11 20:25:10,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:10,261 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-11 20:25:10,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 20:25:11,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226798136] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:11,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:11,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 14] total 35 [2024-09-11 20:25:11,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387968396] [2024-09-11 20:25:11,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:11,016 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-11 20:25:11,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:11,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-11 20:25:11,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1059, Unknown=0, NotChecked=0, Total=1190 [2024-09-11 20:25:11,018 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 35 states, 32 states have (on average 1.53125) internal successors, (49), 24 states have internal predecessors, (49), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) [2024-09-11 20:25:11,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:11,269 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2024-09-11 20:25:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-11 20:25:11,269 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 1.53125) internal successors, (49), 24 states have internal predecessors, (49), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) Word has length 33 [2024-09-11 20:25:11,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:11,270 INFO L225 Difference]: With dead ends: 30 [2024-09-11 20:25:11,270 INFO L226 Difference]: Without dead ends: 26 [2024-09-11 20:25:11,271 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=196, Invalid=1444, Unknown=0, NotChecked=0, Total=1640 [2024-09-11 20:25:11,273 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:11,273 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 129 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:25:11,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-11 20:25:11,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-09-11 20:25:11,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-11 20:25:11,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2024-09-11 20:25:11,283 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 33 [2024-09-11 20:25:11,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:11,283 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-09-11 20:25:11,284 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 1.53125) internal successors, (49), 24 states have internal predecessors, (49), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) [2024-09-11 20:25:11,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:11,284 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2024-09-11 20:25:11,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-11 20:25:11,284 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:11,285 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:11,300 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-11 20:25:11,491 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 20:25:11,492 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:11,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:11,492 INFO L85 PathProgramCache]: Analyzing trace with hash 735115528, now seen corresponding path program 3 times [2024-09-11 20:25:11,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:11,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401493351] [2024-09-11 20:25:11,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:11,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:11,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:11,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:11,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-11 20:25:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:11,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:11,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:11,919 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 20:25:11,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:11,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401493351] [2024-09-11 20:25:11,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401493351] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:11,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063242281] [2024-09-11 20:25:11,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 20:25:11,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:11,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:11,922 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 20:25:11,922 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 20:25:11,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-11 20:25:11,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:25:11,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-09-11 20:25:11,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-11 20:25:12,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:12,762 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 31 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-11 20:25:12,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063242281] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:12,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:12,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 18] total 39 [2024-09-11 20:25:12,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147973968] [2024-09-11 20:25:12,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:12,763 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-11 20:25:12,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:12,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-11 20:25:12,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1366, Unknown=0, NotChecked=0, Total=1482 [2024-09-11 20:25:12,765 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 39 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 25 states have internal predecessors, (51), 8 states have call successors, (8), 1 states have call predecessors, (8), 9 states have return successors, (14), 14 states have call predecessors, (14), 8 states have call successors, (14) [2024-09-11 20:25:13,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:13,378 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2024-09-11 20:25:13,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-11 20:25:13,378 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 25 states have internal predecessors, (51), 8 states have call successors, (8), 1 states have call predecessors, (8), 9 states have return successors, (14), 14 states have call predecessors, (14), 8 states have call successors, (14) Word has length 40 [2024-09-11 20:25:13,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:13,379 INFO L225 Difference]: With dead ends: 44 [2024-09-11 20:25:13,379 INFO L226 Difference]: Without dead ends: 36 [2024-09-11 20:25:13,381 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=326, Invalid=2866, Unknown=0, NotChecked=0, Total=3192 [2024-09-11 20:25:13,381 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 27 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:13,381 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 172 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 20:25:13,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-11 20:25:13,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2024-09-11 20:25:13,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2024-09-11 20:25:13,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2024-09-11 20:25:13,388 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 40 [2024-09-11 20:25:13,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:13,388 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2024-09-11 20:25:13,389 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 25 states have internal predecessors, (51), 8 states have call successors, (8), 1 states have call predecessors, (8), 9 states have return successors, (14), 14 states have call predecessors, (14), 8 states have call successors, (14) [2024-09-11 20:25:13,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:13,389 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2024-09-11 20:25:13,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-11 20:25:13,390 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:13,390 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:13,402 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 20:25:13,594 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 20:25:13,595 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:13,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:13,595 INFO L85 PathProgramCache]: Analyzing trace with hash 2110838554, now seen corresponding path program 4 times [2024-09-11 20:25:13,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:13,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132691382] [2024-09-11 20:25:13,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:13,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:13,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:13,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:13,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:13,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-11 20:25:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:13,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:13,954 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-11 20:25:13,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:13,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132691382] [2024-09-11 20:25:13,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132691382] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:13,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148333643] [2024-09-11 20:25:13,955 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 20:25:13,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:13,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:13,957 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 20:25:13,958 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 20:25:13,997 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 20:25:13,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:25:13,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-09-11 20:25:14,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:14,312 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-11 20:25:14,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:14,909 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-11 20:25:14,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148333643] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:14,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:14,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 20] total 46 [2024-09-11 20:25:14,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568687412] [2024-09-11 20:25:14,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:14,910 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-11 20:25:14,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:14,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-11 20:25:14,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1895, Unknown=0, NotChecked=0, Total=2070 [2024-09-11 20:25:14,912 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 46 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 31 states have internal predecessors, (64), 9 states have call successors, (9), 1 states have call predecessors, (9), 12 states have return successors, (15), 15 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-11 20:25:15,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:15,495 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2024-09-11 20:25:15,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-11 20:25:15,495 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 31 states have internal predecessors, (64), 9 states have call successors, (9), 1 states have call predecessors, (9), 12 states have return successors, (15), 15 states have call predecessors, (15), 9 states have call successors, (15) Word has length 40 [2024-09-11 20:25:15,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:15,497 INFO L225 Difference]: With dead ends: 48 [2024-09-11 20:25:15,497 INFO L226 Difference]: Without dead ends: 40 [2024-09-11 20:25:15,498 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=421, Invalid=3485, Unknown=0, NotChecked=0, Total=3906 [2024-09-11 20:25:15,498 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 27 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:15,499 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 156 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 20:25:15,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-11 20:25:15,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2024-09-11 20:25:15,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2024-09-11 20:25:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2024-09-11 20:25:15,514 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 40 [2024-09-11 20:25:15,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:15,515 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2024-09-11 20:25:15,515 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 31 states have internal predecessors, (64), 9 states have call successors, (9), 1 states have call predecessors, (9), 12 states have return successors, (15), 15 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-11 20:25:15,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:15,515 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2024-09-11 20:25:15,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-11 20:25:15,517 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:15,517 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:15,532 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-11 20:25:15,717 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 20:25:15,717 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:15,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:15,718 INFO L85 PathProgramCache]: Analyzing trace with hash 283456060, now seen corresponding path program 5 times [2024-09-11 20:25:15,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:15,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576856378] [2024-09-11 20:25:15,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:15,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:15,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:15,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:15,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-11 20:25:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:15,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:16,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:16,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 7 proven. 46 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-11 20:25:16,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:16,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576856378] [2024-09-11 20:25:16,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576856378] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:16,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803772467] [2024-09-11 20:25:16,134 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 20:25:16,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:16,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:16,135 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:25:16,136 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-11 20:25:16,177 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-11 20:25:16,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:25:16,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-09-11 20:25:16,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 22 proven. 41 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-11 20:25:16,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:17,457 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 7 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-11 20:25:17,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803772467] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:17,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:17,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 22] total 53 [2024-09-11 20:25:17,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976656] [2024-09-11 20:25:17,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:17,458 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-11 20:25:17,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:17,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-11 20:25:17,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=2570, Unknown=0, NotChecked=0, Total=2756 [2024-09-11 20:25:17,460 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 53 states, 50 states have (on average 1.48) internal successors, (74), 35 states have internal predecessors, (74), 10 states have call successors, (10), 1 states have call predecessors, (10), 16 states have return successors, (18), 18 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-11 20:25:18,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:18,336 INFO L93 Difference]: Finished difference Result 67 states and 92 transitions. [2024-09-11 20:25:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-11 20:25:18,336 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 50 states have (on average 1.48) internal successors, (74), 35 states have internal predecessors, (74), 10 states have call successors, (10), 1 states have call predecessors, (10), 16 states have return successors, (18), 18 states have call predecessors, (18), 10 states have call successors, (18) Word has length 47 [2024-09-11 20:25:18,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:18,338 INFO L225 Difference]: With dead ends: 67 [2024-09-11 20:25:18,338 INFO L226 Difference]: Without dead ends: 61 [2024-09-11 20:25:18,339 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=502, Invalid=4900, Unknown=0, NotChecked=0, Total=5402 [2024-09-11 20:25:18,340 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 44 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:18,340 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 314 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 20:25:18,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-11 20:25:18,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2024-09-11 20:25:18,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 9 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (26), 12 states have call predecessors, (26), 9 states have call successors, (26) [2024-09-11 20:25:18,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 76 transitions. [2024-09-11 20:25:18,352 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 76 transitions. Word has length 47 [2024-09-11 20:25:18,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:18,352 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 76 transitions. [2024-09-11 20:25:18,352 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 50 states have (on average 1.48) internal successors, (74), 35 states have internal predecessors, (74), 10 states have call successors, (10), 1 states have call predecessors, (10), 16 states have return successors, (18), 18 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-11 20:25:18,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:18,353 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 76 transitions. [2024-09-11 20:25:18,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-11 20:25:18,353 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:18,354 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:18,365 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-11 20:25:18,557 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:18,558 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:18,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:18,558 INFO L85 PathProgramCache]: Analyzing trace with hash -71623192, now seen corresponding path program 6 times [2024-09-11 20:25:18,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:18,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793824742] [2024-09-11 20:25:18,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:18,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:18,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:18,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:18,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:19,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:19,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-11 20:25:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:19,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:19,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:19,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:19,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:19,394 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 24 proven. 117 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-09-11 20:25:19,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:19,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793824742] [2024-09-11 20:25:19,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793824742] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:19,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901431413] [2024-09-11 20:25:19,395 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 20:25:19,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:19,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:19,397 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:25:19,398 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-11 20:25:19,458 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-11 20:25:19,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:25:19,461 WARN L260 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-09-11 20:25:19,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:19,936 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 4 proven. 106 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-11 20:25:19,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 29 proven. 153 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-11 20:25:21,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901431413] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:21,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:21,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 18, 30] total 61 [2024-09-11 20:25:21,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254385695] [2024-09-11 20:25:21,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:21,256 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-09-11 20:25:21,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:21,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-09-11 20:25:21,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=3432, Unknown=0, NotChecked=0, Total=3660 [2024-09-11 20:25:21,258 INFO L87 Difference]: Start difference. First operand 55 states and 76 transitions. Second operand has 61 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 38 states have internal predecessors, (81), 13 states have call successors, (13), 1 states have call predecessors, (13), 17 states have return successors, (24), 23 states have call predecessors, (24), 13 states have call successors, (24) [2024-09-11 20:25:22,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:22,414 INFO L93 Difference]: Finished difference Result 77 states and 109 transitions. [2024-09-11 20:25:22,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-11 20:25:22,415 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 38 states have internal predecessors, (81), 13 states have call successors, (13), 1 states have call predecessors, (13), 17 states have return successors, (24), 23 states have call predecessors, (24), 13 states have call successors, (24) Word has length 68 [2024-09-11 20:25:22,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:22,417 INFO L225 Difference]: With dead ends: 77 [2024-09-11 20:25:22,417 INFO L226 Difference]: Without dead ends: 67 [2024-09-11 20:25:22,419 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1446 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=638, Invalid=6502, Unknown=0, NotChecked=0, Total=7140 [2024-09-11 20:25:22,419 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 38 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 1635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:22,420 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 354 Invalid, 1635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-11 20:25:22,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-11 20:25:22,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 56. [2024-09-11 20:25:22,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 38 states have (on average 1.105263157894737) internal successors, (42), 39 states have internal predecessors, (42), 8 states have call successors, (8), 4 states have call predecessors, (8), 9 states have return successors, (25), 12 states have call predecessors, (25), 8 states have call successors, (25) [2024-09-11 20:25:22,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 75 transitions. [2024-09-11 20:25:22,433 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 75 transitions. Word has length 68 [2024-09-11 20:25:22,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:22,433 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 75 transitions. [2024-09-11 20:25:22,433 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 38 states have internal predecessors, (81), 13 states have call successors, (13), 1 states have call predecessors, (13), 17 states have return successors, (24), 23 states have call predecessors, (24), 13 states have call successors, (24) [2024-09-11 20:25:22,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:22,434 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 75 transitions. [2024-09-11 20:25:22,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-11 20:25:22,435 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:22,435 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:22,451 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-11 20:25:22,636 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:22,636 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:22,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:22,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1515345786, now seen corresponding path program 7 times [2024-09-11 20:25:22,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:22,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793543417] [2024-09-11 20:25:22,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:22,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:22,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:22,965 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 24 [2024-09-11 20:25:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,457 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 24 proven. 117 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-09-11 20:25:23,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:23,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793543417] [2024-09-11 20:25:23,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793543417] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:23,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271752658] [2024-09-11 20:25:23,457 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 20:25:23,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:23,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:23,459 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:25:23,460 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-11 20:25:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:23,510 WARN L260 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-09-11 20:25:23,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:24,019 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 5 proven. 108 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-09-11 20:25:24,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:25,258 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 26 proven. 156 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-11 20:25:25,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271752658] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:25,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:25,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 30] total 62 [2024-09-11 20:25:25,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16625541] [2024-09-11 20:25:25,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:25,260 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-11 20:25:25,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:25,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-11 20:25:25,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=3556, Unknown=0, NotChecked=0, Total=3782 [2024-09-11 20:25:25,261 INFO L87 Difference]: Start difference. First operand 56 states and 75 transitions. Second operand has 62 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 38 states have internal predecessors, (82), 13 states have call successors, (13), 1 states have call predecessors, (13), 17 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) [2024-09-11 20:25:26,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:26,206 INFO L93 Difference]: Finished difference Result 77 states and 108 transitions. [2024-09-11 20:25:26,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-11 20:25:26,207 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 38 states have internal predecessors, (82), 13 states have call successors, (13), 1 states have call predecessors, (13), 17 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) Word has length 68 [2024-09-11 20:25:26,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:26,208 INFO L225 Difference]: With dead ends: 77 [2024-09-11 20:25:26,208 INFO L226 Difference]: Without dead ends: 70 [2024-09-11 20:25:26,210 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1491 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=578, Invalid=6562, Unknown=0, NotChecked=0, Total=7140 [2024-09-11 20:25:26,210 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 61 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:26,210 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 403 Invalid, 1518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-11 20:25:26,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-11 20:25:26,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2024-09-11 20:25:26,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 40 states have (on average 1.1) internal successors, (44), 41 states have internal predecessors, (44), 8 states have call successors, (8), 4 states have call predecessors, (8), 10 states have return successors, (28), 13 states have call predecessors, (28), 8 states have call successors, (28) [2024-09-11 20:25:26,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 80 transitions. [2024-09-11 20:25:26,227 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 80 transitions. Word has length 68 [2024-09-11 20:25:26,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:26,227 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 80 transitions. [2024-09-11 20:25:26,227 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 38 states have internal predecessors, (82), 13 states have call successors, (13), 1 states have call predecessors, (13), 17 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) [2024-09-11 20:25:26,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:26,227 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 80 transitions. [2024-09-11 20:25:26,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-09-11 20:25:26,228 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:26,228 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:26,240 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-11 20:25:26,428 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:26,429 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:26,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:26,429 INFO L85 PathProgramCache]: Analyzing trace with hash -335813798, now seen corresponding path program 8 times [2024-09-11 20:25:26,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:26,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412235330] [2024-09-11 20:25:26,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:26,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:26,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:26,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:26,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:26,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-11 20:25:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:26,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:26,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:27,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:27,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:27,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:27,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:27,333 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 28 proven. 146 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-09-11 20:25:27,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:27,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412235330] [2024-09-11 20:25:27,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412235330] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:27,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681650801] [2024-09-11 20:25:27,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 20:25:27,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:27,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:27,336 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:25:27,337 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-11 20:25:27,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 20:25:27,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:25:27,400 WARN L260 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-09-11 20:25:27,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:28,011 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 6 proven. 136 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-09-11 20:25:28,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 29 proven. 203 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-11 20:25:29,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681650801] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:29,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:29,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 33] total 68 [2024-09-11 20:25:29,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266808392] [2024-09-11 20:25:29,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:29,462 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-11 20:25:29,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:29,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-11 20:25:29,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=4308, Unknown=0, NotChecked=0, Total=4556 [2024-09-11 20:25:29,464 INFO L87 Difference]: Start difference. First operand 59 states and 80 transitions. Second operand has 68 states, 64 states have (on average 1.40625) internal successors, (90), 41 states have internal predecessors, (90), 14 states have call successors, (14), 1 states have call predecessors, (14), 19 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) [2024-09-11 20:25:30,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:30,589 INFO L93 Difference]: Finished difference Result 80 states and 113 transitions. [2024-09-11 20:25:30,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-11 20:25:30,590 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 64 states have (on average 1.40625) internal successors, (90), 41 states have internal predecessors, (90), 14 states have call successors, (14), 1 states have call predecessors, (14), 19 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) Word has length 75 [2024-09-11 20:25:30,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:30,591 INFO L225 Difference]: With dead ends: 80 [2024-09-11 20:25:30,591 INFO L226 Difference]: Without dead ends: 73 [2024-09-11 20:25:30,593 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1795 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=655, Invalid=7901, Unknown=0, NotChecked=0, Total=8556 [2024-09-11 20:25:30,593 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 86 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 1641 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:30,593 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 455 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-11 20:25:30,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-11 20:25:30,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 62. [2024-09-11 20:25:30,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 43 states have internal predecessors, (46), 8 states have call successors, (8), 4 states have call predecessors, (8), 11 states have return successors, (31), 14 states have call predecessors, (31), 8 states have call successors, (31) [2024-09-11 20:25:30,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 85 transitions. [2024-09-11 20:25:30,607 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 85 transitions. Word has length 75 [2024-09-11 20:25:30,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:30,607 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 85 transitions. [2024-09-11 20:25:30,608 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 64 states have (on average 1.40625) internal successors, (90), 41 states have internal predecessors, (90), 14 states have call successors, (14), 1 states have call predecessors, (14), 19 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) [2024-09-11 20:25:30,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:30,608 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 85 transitions. [2024-09-11 20:25:30,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-11 20:25:30,608 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:30,609 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:30,621 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-11 20:25:30,812 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-11 20:25:30,812 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:30,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:30,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1184049882, now seen corresponding path program 9 times [2024-09-11 20:25:30,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:30,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925165360] [2024-09-11 20:25:30,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:30,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:30,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:31,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:31,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:31,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:31,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:31,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-11 20:25:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:31,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:31,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:31,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 22 proven. 119 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-09-11 20:25:31,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:31,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925165360] [2024-09-11 20:25:31,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925165360] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:31,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235117139] [2024-09-11 20:25:31,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 20:25:31,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:31,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:31,485 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:25:31,487 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-11 20:25:31,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-11 20:25:31,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:25:31,544 WARN L260 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-09-11 20:25:31,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:31,897 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 3 proven. 107 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-11 20:25:31,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 29 proven. 153 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-11 20:25:33,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235117139] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:33,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:33,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 18, 30] total 62 [2024-09-11 20:25:33,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826431413] [2024-09-11 20:25:33,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:33,108 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-11 20:25:33,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:33,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-11 20:25:33,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=3547, Unknown=0, NotChecked=0, Total=3782 [2024-09-11 20:25:33,109 INFO L87 Difference]: Start difference. First operand 62 states and 85 transitions. Second operand has 62 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 39 states have internal predecessors, (82), 13 states have call successors, (13), 1 states have call predecessors, (13), 18 states have return successors, (24), 23 states have call predecessors, (24), 13 states have call successors, (24) [2024-09-11 20:25:34,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:34,161 INFO L93 Difference]: Finished difference Result 83 states and 116 transitions. [2024-09-11 20:25:34,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-11 20:25:34,162 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 39 states have internal predecessors, (82), 13 states have call successors, (13), 1 states have call predecessors, (13), 18 states have return successors, (24), 23 states have call predecessors, (24), 13 states have call successors, (24) Word has length 68 [2024-09-11 20:25:34,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:34,163 INFO L225 Difference]: With dead ends: 83 [2024-09-11 20:25:34,163 INFO L226 Difference]: Without dead ends: 71 [2024-09-11 20:25:34,163 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1441 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=642, Invalid=6498, Unknown=0, NotChecked=0, Total=7140 [2024-09-11 20:25:34,164 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 55 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:34,164 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 357 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-11 20:25:34,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-11 20:25:34,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2024-09-11 20:25:34,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 43 states have internal predecessors, (46), 8 states have call successors, (8), 4 states have call predecessors, (8), 11 states have return successors, (30), 14 states have call predecessors, (30), 8 states have call successors, (30) [2024-09-11 20:25:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 84 transitions. [2024-09-11 20:25:34,178 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 84 transitions. Word has length 68 [2024-09-11 20:25:34,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:34,178 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 84 transitions. [2024-09-11 20:25:34,179 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 39 states have internal predecessors, (82), 13 states have call successors, (13), 1 states have call predecessors, (13), 18 states have return successors, (24), 23 states have call predecessors, (24), 13 states have call successors, (24) [2024-09-11 20:25:34,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:34,179 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 84 transitions. [2024-09-11 20:25:34,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-11 20:25:34,179 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:34,180 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:34,192 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-11 20:25:34,383 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-11 20:25:34,384 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:34,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:34,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1392852054, now seen corresponding path program 10 times [2024-09-11 20:25:34,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:34,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097254751] [2024-09-11 20:25:34,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:34,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:34,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:34,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:34,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:34,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-11 20:25:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:34,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:34,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:35,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:35,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:35,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:35,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:35,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:35,381 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 178 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-09-11 20:25:35,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:35,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097254751] [2024-09-11 20:25:35,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097254751] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:35,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964399598] [2024-09-11 20:25:35,382 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 20:25:35,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:35,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:35,383 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:25:35,385 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-11 20:25:35,446 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 20:25:35,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:25:35,449 WARN L260 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 133 conjuncts are in the unsatisfiable core [2024-09-11 20:25:35,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:36,040 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 7 proven. 167 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-09-11 20:25:36,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:37,779 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 256 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-09-11 20:25:37,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964399598] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:37,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:37,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24, 36] total 74 [2024-09-11 20:25:37,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26722273] [2024-09-11 20:25:37,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:37,780 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-11 20:25:37,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:37,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-11 20:25:37,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=5132, Unknown=0, NotChecked=0, Total=5402 [2024-09-11 20:25:37,781 INFO L87 Difference]: Start difference. First operand 62 states and 84 transitions. Second operand has 74 states, 70 states have (on average 1.4) internal successors, (98), 44 states have internal predecessors, (98), 15 states have call successors, (15), 1 states have call predecessors, (15), 21 states have return successors, (31), 30 states have call predecessors, (31), 15 states have call successors, (31) [2024-09-11 20:25:38,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:38,996 INFO L93 Difference]: Finished difference Result 81 states and 115 transitions. [2024-09-11 20:25:38,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-11 20:25:38,996 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 70 states have (on average 1.4) internal successors, (98), 44 states have internal predecessors, (98), 15 states have call successors, (15), 1 states have call predecessors, (15), 21 states have return successors, (31), 30 states have call predecessors, (31), 15 states have call successors, (31) Word has length 82 [2024-09-11 20:25:38,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:38,997 INFO L225 Difference]: With dead ends: 81 [2024-09-11 20:25:38,997 INFO L226 Difference]: Without dead ends: 74 [2024-09-11 20:25:38,998 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2077 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=732, Invalid=9168, Unknown=0, NotChecked=0, Total=9900 [2024-09-11 20:25:38,998 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 109 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 2093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:38,998 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 515 Invalid, 2093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-11 20:25:38,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-11 20:25:39,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 65. [2024-09-11 20:25:39,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 45 states have internal predecessors, (48), 8 states have call successors, (8), 4 states have call predecessors, (8), 12 states have return successors, (33), 15 states have call predecessors, (33), 8 states have call successors, (33) [2024-09-11 20:25:39,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 89 transitions. [2024-09-11 20:25:39,014 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 89 transitions. Word has length 82 [2024-09-11 20:25:39,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:39,014 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 89 transitions. [2024-09-11 20:25:39,014 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 70 states have (on average 1.4) internal successors, (98), 44 states have internal predecessors, (98), 15 states have call successors, (15), 1 states have call predecessors, (15), 21 states have return successors, (31), 30 states have call predecessors, (31), 15 states have call successors, (31) [2024-09-11 20:25:39,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:39,015 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 89 transitions. [2024-09-11 20:25:39,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-09-11 20:25:39,015 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:39,015 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:39,028 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-11 20:25:39,219 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:39,220 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:39,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:39,220 INFO L85 PathProgramCache]: Analyzing trace with hash -34520552, now seen corresponding path program 11 times [2024-09-11 20:25:39,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:39,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47715828] [2024-09-11 20:25:39,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:39,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:39,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:39,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:39,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:39,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:39,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:39,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:39,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-11 20:25:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:39,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:40,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:40,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:40,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:40,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:40,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:40,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:40,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:40,660 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 48 proven. 336 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-09-11 20:25:40,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:40,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47715828] [2024-09-11 20:25:40,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47715828] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:40,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441810166] [2024-09-11 20:25:40,661 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 20:25:40,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:40,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:40,662 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:25:40,663 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-11 20:25:40,728 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-09-11 20:25:40,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:25:40,731 WARN L260 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 181 conjuncts are in the unsatisfiable core [2024-09-11 20:25:40,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 8 proven. 316 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-09-11 20:25:41,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:44,415 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 53 proven. 520 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-09-11 20:25:44,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441810166] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:44,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:44,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 26, 48] total 95 [2024-09-11 20:25:44,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574848498] [2024-09-11 20:25:44,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:44,416 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-09-11 20:25:44,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:44,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-09-11 20:25:44,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=8566, Unknown=0, NotChecked=0, Total=8930 [2024-09-11 20:25:44,417 INFO L87 Difference]: Start difference. First operand 65 states and 89 transitions. Second operand has 95 states, 91 states have (on average 1.4285714285714286) internal successors, (130), 56 states have internal predecessors, (130), 19 states have call successors, (19), 1 states have call predecessors, (19), 29 states have return successors, (40), 39 states have call predecessors, (40), 19 states have call successors, (40) [2024-09-11 20:25:46,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:46,677 INFO L93 Difference]: Finished difference Result 91 states and 134 transitions. [2024-09-11 20:25:46,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-11 20:25:46,677 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 91 states have (on average 1.4285714285714286) internal successors, (130), 56 states have internal predecessors, (130), 19 states have call successors, (19), 1 states have call predecessors, (19), 29 states have return successors, (40), 39 states have call predecessors, (40), 19 states have call successors, (40) Word has length 110 [2024-09-11 20:25:46,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:46,679 INFO L225 Difference]: With dead ends: 91 [2024-09-11 20:25:46,679 INFO L226 Difference]: Without dead ends: 77 [2024-09-11 20:25:46,680 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3402 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1218, Invalid=15552, Unknown=0, NotChecked=0, Total=16770 [2024-09-11 20:25:46,681 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 113 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 3806 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 3941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 3806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:46,681 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 837 Invalid, 3941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 3806 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-09-11 20:25:46,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-11 20:25:46,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 68. [2024-09-11 20:25:46,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 47 states have internal predecessors, (50), 8 states have call successors, (8), 4 states have call predecessors, (8), 13 states have return successors, (36), 16 states have call predecessors, (36), 8 states have call successors, (36) [2024-09-11 20:25:46,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2024-09-11 20:25:46,697 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 110 [2024-09-11 20:25:46,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:46,698 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2024-09-11 20:25:46,698 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 91 states have (on average 1.4285714285714286) internal successors, (130), 56 states have internal predecessors, (130), 19 states have call successors, (19), 1 states have call predecessors, (19), 29 states have return successors, (40), 39 states have call predecessors, (40), 19 states have call successors, (40) [2024-09-11 20:25:46,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:46,698 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2024-09-11 20:25:46,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-09-11 20:25:46,699 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:46,699 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 15, 15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:46,712 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-11 20:25:46,903 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-11 20:25:46,903 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:46,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:46,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1625676038, now seen corresponding path program 12 times [2024-09-11 20:25:46,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:46,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579320956] [2024-09-11 20:25:46,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:46,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:47,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:47,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:47,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:47,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:47,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:47,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:47,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:47,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-11 20:25:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:47,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:47,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:48,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:48,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:48,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:48,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:48,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:48,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:48,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:48,744 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 56 proven. 433 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2024-09-11 20:25:48,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:48,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579320956] [2024-09-11 20:25:48,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579320956] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:48,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541306377] [2024-09-11 20:25:48,745 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 20:25:48,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:48,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:48,747 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:25:48,749 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-11 20:25:48,832 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2024-09-11 20:25:48,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:25:48,836 WARN L260 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 205 conjuncts are in the unsatisfiable core [2024-09-11 20:25:48,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:49,801 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 9 proven. 408 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2024-09-11 20:25:49,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:25:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 62 proven. 688 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-09-11 20:25:53,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541306377] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:25:53,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:25:53,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 28, 54] total 106 [2024-09-11 20:25:53,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89890199] [2024-09-11 20:25:53,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:25:53,468 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-09-11 20:25:53,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:25:53,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-09-11 20:25:53,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=10720, Unknown=0, NotChecked=0, Total=11130 [2024-09-11 20:25:53,470 INFO L87 Difference]: Start difference. First operand 68 states and 94 transitions. Second operand has 106 states, 102 states have (on average 1.392156862745098) internal successors, (142), 62 states have internal predecessors, (142), 21 states have call successors, (21), 1 states have call predecessors, (21), 33 states have return successors, (45), 44 states have call predecessors, (45), 21 states have call successors, (45) [2024-09-11 20:25:56,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:25:56,065 INFO L93 Difference]: Finished difference Result 95 states and 141 transitions. [2024-09-11 20:25:56,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-11 20:25:56,066 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 102 states have (on average 1.392156862745098) internal successors, (142), 62 states have internal predecessors, (142), 21 states have call successors, (21), 1 states have call predecessors, (21), 33 states have return successors, (45), 44 states have call predecessors, (45), 21 states have call successors, (45) Word has length 124 [2024-09-11 20:25:56,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:25:56,067 INFO L225 Difference]: With dead ends: 95 [2024-09-11 20:25:56,067 INFO L226 Difference]: Without dead ends: 80 [2024-09-11 20:25:56,069 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4149 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1417, Invalid=19175, Unknown=0, NotChecked=0, Total=20592 [2024-09-11 20:25:56,069 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 156 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 4252 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 4385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 4252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-09-11 20:25:56,072 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 908 Invalid, 4385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 4252 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-09-11 20:25:56,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-11 20:25:56,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2024-09-11 20:25:56,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 49 states have internal predecessors, (52), 8 states have call successors, (8), 4 states have call predecessors, (8), 14 states have return successors, (39), 17 states have call predecessors, (39), 8 states have call successors, (39) [2024-09-11 20:25:56,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 99 transitions. [2024-09-11 20:25:56,093 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 99 transitions. Word has length 124 [2024-09-11 20:25:56,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:25:56,094 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 99 transitions. [2024-09-11 20:25:56,094 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 102 states have (on average 1.392156862745098) internal successors, (142), 62 states have internal predecessors, (142), 21 states have call successors, (21), 1 states have call predecessors, (21), 33 states have return successors, (45), 44 states have call predecessors, (45), 21 states have call successors, (45) [2024-09-11 20:25:56,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:56,094 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 99 transitions. [2024-09-11 20:25:56,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-09-11 20:25:56,095 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:25:56,095 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:25:56,107 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-11 20:25:56,295 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-11 20:25:56,295 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:25:56,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:25:56,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1109932794, now seen corresponding path program 13 times [2024-09-11 20:25:56,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:25:56,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243256163] [2024-09-11 20:25:56,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:25:56,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:25:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:56,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:56,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:56,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:56,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-11 20:25:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:56,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:57,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:57,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:57,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:57,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:57,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:57,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:57,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:57,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:57,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:25:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 44 proven. 292 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2024-09-11 20:25:57,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:25:57,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243256163] [2024-09-11 20:25:57,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243256163] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:25:57,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337128516] [2024-09-11 20:25:57,800 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 20:25:57,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:25:57,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:25:57,802 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:25:57,803 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-11 20:25:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:25:57,888 WARN L260 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 169 conjuncts are in the unsatisfiable core [2024-09-11 20:25:57,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:25:58,769 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 10 proven. 278 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2024-09-11 20:25:58,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:26:01,470 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 41 proven. 451 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-09-11 20:26:01,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337128516] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:26:01,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:26:01,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 30, 45] total 92 [2024-09-11 20:26:01,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487019744] [2024-09-11 20:26:01,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:26:01,471 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-09-11 20:26:01,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:26:01,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-09-11 20:26:01,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=8036, Unknown=0, NotChecked=0, Total=8372 [2024-09-11 20:26:01,472 INFO L87 Difference]: Start difference. First operand 71 states and 99 transitions. Second operand has 92 states, 88 states have (on average 1.3863636363636365) internal successors, (122), 53 states have internal predecessors, (122), 18 states have call successors, (18), 1 states have call predecessors, (18), 27 states have return successors, (40), 39 states have call predecessors, (40), 18 states have call successors, (40) [2024-09-11 20:26:03,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:26:03,352 INFO L93 Difference]: Finished difference Result 90 states and 130 transitions. [2024-09-11 20:26:03,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-11 20:26:03,352 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 88 states have (on average 1.3863636363636365) internal successors, (122), 53 states have internal predecessors, (122), 18 states have call successors, (18), 1 states have call predecessors, (18), 27 states have return successors, (40), 39 states have call predecessors, (40), 18 states have call successors, (40) Word has length 103 [2024-09-11 20:26:03,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:26:03,353 INFO L225 Difference]: With dead ends: 90 [2024-09-11 20:26:03,353 INFO L226 Difference]: Without dead ends: 83 [2024-09-11 20:26:03,355 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3232 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=999, Invalid=14253, Unknown=0, NotChecked=0, Total=15252 [2024-09-11 20:26:03,355 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 128 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 3201 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 3420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 3201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:26:03,355 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 823 Invalid, 3420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 3201 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-11 20:26:03,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-09-11 20:26:03,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 74. [2024-09-11 20:26:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.08) internal successors, (54), 51 states have internal predecessors, (54), 8 states have call successors, (8), 4 states have call predecessors, (8), 15 states have return successors, (42), 18 states have call predecessors, (42), 8 states have call successors, (42) [2024-09-11 20:26:03,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 104 transitions. [2024-09-11 20:26:03,374 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 104 transitions. Word has length 103 [2024-09-11 20:26:03,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:26:03,374 INFO L474 AbstractCegarLoop]: Abstraction has 74 states and 104 transitions. [2024-09-11 20:26:03,375 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 88 states have (on average 1.3863636363636365) internal successors, (122), 53 states have internal predecessors, (122), 18 states have call successors, (18), 1 states have call predecessors, (18), 27 states have return successors, (40), 39 states have call predecessors, (40), 18 states have call successors, (40) [2024-09-11 20:26:03,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:03,375 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 104 transitions. [2024-09-11 20:26:03,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-09-11 20:26:03,376 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:26:03,376 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 18, 18, 18, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:26:03,388 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-11 20:26:03,580 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-11 20:26:03,580 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:26:03,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:03,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2043264436, now seen corresponding path program 14 times [2024-09-11 20:26:03,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:26:03,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70269198] [2024-09-11 20:26:03,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:26:03,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:26:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:03,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:04,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:04,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:04,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:04,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:04,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:04,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:04,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:04,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-11 20:26:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:04,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:05,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:05,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:05,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:05,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:05,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:05,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:05,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:05,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:05,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:06,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 68 proven. 601 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2024-09-11 20:26:06,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:26:06,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70269198] [2024-09-11 20:26:06,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70269198] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:26:06,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595898365] [2024-09-11 20:26:06,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 20:26:06,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:26:06,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:26:06,052 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:26:06,053 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-11 20:26:06,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 20:26:06,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:26:06,141 WARN L260 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 241 conjuncts are in the unsatisfiable core [2024-09-11 20:26:06,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:26:07,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 11 proven. 571 refuted. 0 times theorem prover too weak. 674 trivial. 0 not checked. [2024-09-11 20:26:07,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:26:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 74 proven. 988 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-09-11 20:26:12,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595898365] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:26:12,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:26:12,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 32, 63] total 123 [2024-09-11 20:26:12,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807878904] [2024-09-11 20:26:12,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:26:12,369 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2024-09-11 20:26:12,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:26:12,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2024-09-11 20:26:12,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=14528, Unknown=0, NotChecked=0, Total=15006 [2024-09-11 20:26:12,371 INFO L87 Difference]: Start difference. First operand 74 states and 104 transitions. Second operand has 123 states, 119 states have (on average 1.3865546218487395) internal successors, (165), 71 states have internal predecessors, (165), 24 states have call successors, (24), 1 states have call predecessors, (24), 39 states have return successors, (53), 52 states have call predecessors, (53), 24 states have call successors, (53) [2024-09-11 20:26:15,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:26:15,706 INFO L93 Difference]: Finished difference Result 103 states and 155 transitions. [2024-09-11 20:26:15,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-09-11 20:26:15,707 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 119 states have (on average 1.3865546218487395) internal successors, (165), 71 states have internal predecessors, (165), 24 states have call successors, (24), 1 states have call predecessors, (24), 39 states have return successors, (53), 52 states have call predecessors, (53), 24 states have call successors, (53) Word has length 145 [2024-09-11 20:26:15,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:26:15,708 INFO L225 Difference]: With dead ends: 103 [2024-09-11 20:26:15,708 INFO L226 Difference]: Without dead ends: 86 [2024-09-11 20:26:15,709 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5597 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1784, Invalid=25938, Unknown=0, NotChecked=0, Total=27722 [2024-09-11 20:26:15,710 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 229 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 5097 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 5346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 5097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-09-11 20:26:15,710 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1076 Invalid, 5346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 5097 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-09-11 20:26:15,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-09-11 20:26:15,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2024-09-11 20:26:15,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 53 states have internal predecessors, (56), 8 states have call successors, (8), 4 states have call predecessors, (8), 16 states have return successors, (45), 19 states have call predecessors, (45), 8 states have call successors, (45) [2024-09-11 20:26:15,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 109 transitions. [2024-09-11 20:26:15,731 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 109 transitions. Word has length 145 [2024-09-11 20:26:15,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:26:15,731 INFO L474 AbstractCegarLoop]: Abstraction has 77 states and 109 transitions. [2024-09-11 20:26:15,732 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 119 states have (on average 1.3865546218487395) internal successors, (165), 71 states have internal predecessors, (165), 24 states have call successors, (24), 1 states have call predecessors, (24), 39 states have return successors, (53), 52 states have call predecessors, (53), 24 states have call successors, (53) [2024-09-11 20:26:15,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:15,732 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 109 transitions. [2024-09-11 20:26:15,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-09-11 20:26:15,733 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:26:15,733 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 20, 20, 20, 20, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:26:15,751 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-11 20:26:15,933 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-11 20:26:15,933 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:26:15,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:15,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1264518682, now seen corresponding path program 15 times [2024-09-11 20:26:15,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:26:15,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623213280] [2024-09-11 20:26:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:26:15,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:26:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:16,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:16,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:16,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:16,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:16,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:16,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:16,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:16,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:16,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:17,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-11 20:26:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:17,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:17,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:17,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:17,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:18,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:18,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:18,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:18,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:18,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:18,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:18,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:18,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:18,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1535 backedges. 76 proven. 728 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked. [2024-09-11 20:26:18,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:26:18,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623213280] [2024-09-11 20:26:18,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623213280] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:26:18,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030723920] [2024-09-11 20:26:18,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 20:26:18,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:26:18,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:26:18,832 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:26:18,833 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-11 20:26:18,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2024-09-11 20:26:18,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:26:18,954 WARN L260 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 265 conjuncts are in the unsatisfiable core [2024-09-11 20:26:18,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:26:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1535 backedges. 12 proven. 694 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2024-09-11 20:26:20,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:26:26,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1535 backedges. 83 proven. 1217 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-09-11 20:26:26,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030723920] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:26:26,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:26:26,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 34, 69] total 134 [2024-09-11 20:26:26,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030937364] [2024-09-11 20:26:26,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:26:26,295 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2024-09-11 20:26:26,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:26:26,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2024-09-11 20:26:26,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=524, Invalid=17298, Unknown=0, NotChecked=0, Total=17822 [2024-09-11 20:26:26,297 INFO L87 Difference]: Start difference. First operand 77 states and 109 transitions. Second operand has 134 states, 130 states have (on average 1.3846153846153846) internal successors, (180), 77 states have internal predecessors, (180), 26 states have call successors, (26), 1 states have call predecessors, (26), 43 states have return successors, (58), 57 states have call predecessors, (58), 26 states have call successors, (58) [2024-09-11 20:26:30,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:26:30,512 INFO L93 Difference]: Finished difference Result 107 states and 162 transitions. [2024-09-11 20:26:30,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-09-11 20:26:30,512 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 130 states have (on average 1.3846153846153846) internal successors, (180), 77 states have internal predecessors, (180), 26 states have call successors, (26), 1 states have call predecessors, (26), 43 states have return successors, (58), 57 states have call predecessors, (58), 26 states have call successors, (58) Word has length 159 [2024-09-11 20:26:30,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:26:30,513 INFO L225 Difference]: With dead ends: 107 [2024-09-11 20:26:30,513 INFO L226 Difference]: Without dead ends: 89 [2024-09-11 20:26:30,515 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6561 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=2016, Invalid=30564, Unknown=0, NotChecked=0, Total=32580 [2024-09-11 20:26:30,515 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 245 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 6832 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 7120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 6832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-09-11 20:26:30,515 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1466 Invalid, 7120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 6832 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-09-11 20:26:30,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-09-11 20:26:30,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2024-09-11 20:26:30,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 55 states have internal predecessors, (58), 8 states have call successors, (8), 4 states have call predecessors, (8), 17 states have return successors, (48), 20 states have call predecessors, (48), 8 states have call successors, (48) [2024-09-11 20:26:30,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 114 transitions. [2024-09-11 20:26:30,542 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 114 transitions. Word has length 159 [2024-09-11 20:26:30,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:26:30,543 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 114 transitions. [2024-09-11 20:26:30,543 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 130 states have (on average 1.3846153846153846) internal successors, (180), 77 states have internal predecessors, (180), 26 states have call successors, (26), 1 states have call predecessors, (26), 43 states have return successors, (58), 57 states have call predecessors, (58), 26 states have call successors, (58) [2024-09-11 20:26:30,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:30,543 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 114 transitions. [2024-09-11 20:26:30,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-09-11 20:26:30,546 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:26:30,546 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 22, 22, 22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:26:30,564 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-11 20:26:30,747 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:26:30,747 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:26:30,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:30,747 INFO L85 PathProgramCache]: Analyzing trace with hash 164223852, now seen corresponding path program 16 times [2024-09-11 20:26:30,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:26:30,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639688219] [2024-09-11 20:26:30,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:26:30,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:26:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:31,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:31,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:31,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:31,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:31,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:31,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:31,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:31,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:31,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:32,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:32,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-11 20:26:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:32,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:32,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:32,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:32,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:33,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:33,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:33,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:33,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:33,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:33,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:33,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:34,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:34,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:34,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:34,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 84 proven. 867 refuted. 0 times theorem prover too weak. 891 trivial. 0 not checked. [2024-09-11 20:26:34,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:26:34,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639688219] [2024-09-11 20:26:34,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639688219] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:26:34,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680397731] [2024-09-11 20:26:34,297 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 20:26:34,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:26:34,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:26:34,298 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:26:34,299 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-11 20:26:34,409 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 20:26:34,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:26:34,413 WARN L260 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 289 conjuncts are in the unsatisfiable core [2024-09-11 20:26:34,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:26:36,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 13 proven. 829 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2024-09-11 20:26:36,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:26:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 92 proven. 1470 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-09-11 20:26:43,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680397731] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:26:43,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:26:43,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 36, 75] total 145 [2024-09-11 20:26:43,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222769464] [2024-09-11 20:26:43,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:26:43,027 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 145 states [2024-09-11 20:26:43,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:26:43,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2024-09-11 20:26:43,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=20310, Unknown=0, NotChecked=0, Total=20880 [2024-09-11 20:26:43,030 INFO L87 Difference]: Start difference. First operand 80 states and 114 transitions. Second operand has 145 states, 141 states have (on average 1.3829787234042554) internal successors, (195), 83 states have internal predecessors, (195), 28 states have call successors, (28), 1 states have call predecessors, (28), 47 states have return successors, (63), 62 states have call predecessors, (63), 28 states have call successors, (63) [2024-09-11 20:26:47,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:26:47,296 INFO L93 Difference]: Finished difference Result 111 states and 169 transitions. [2024-09-11 20:26:47,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-09-11 20:26:47,296 INFO L78 Accepts]: Start accepts. Automaton has has 145 states, 141 states have (on average 1.3829787234042554) internal successors, (195), 83 states have internal predecessors, (195), 28 states have call successors, (28), 1 states have call predecessors, (28), 47 states have return successors, (63), 62 states have call predecessors, (63), 28 states have call successors, (63) Word has length 173 [2024-09-11 20:26:47,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:26:47,297 INFO L225 Difference]: With dead ends: 111 [2024-09-11 20:26:47,297 INFO L226 Difference]: Without dead ends: 92 [2024-09-11 20:26:47,300 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7606 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=2260, Invalid=35570, Unknown=0, NotChecked=0, Total=37830 [2024-09-11 20:26:47,300 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 267 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 6418 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 6761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 6418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-09-11 20:26:47,300 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 1316 Invalid, 6761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 6418 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-09-11 20:26:47,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-09-11 20:26:47,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2024-09-11 20:26:47,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 56 states have (on average 1.0714285714285714) internal successors, (60), 57 states have internal predecessors, (60), 8 states have call successors, (8), 4 states have call predecessors, (8), 18 states have return successors, (51), 21 states have call predecessors, (51), 8 states have call successors, (51) [2024-09-11 20:26:47,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 119 transitions. [2024-09-11 20:26:47,325 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 119 transitions. Word has length 173 [2024-09-11 20:26:47,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:26:47,325 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 119 transitions. [2024-09-11 20:26:47,326 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 145 states, 141 states have (on average 1.3829787234042554) internal successors, (195), 83 states have internal predecessors, (195), 28 states have call successors, (28), 1 states have call predecessors, (28), 47 states have return successors, (63), 62 states have call predecessors, (63), 28 states have call successors, (63) [2024-09-11 20:26:47,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:47,326 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 119 transitions. [2024-09-11 20:26:47,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-09-11 20:26:47,327 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:26:47,327 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 24, 24, 24, 24, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:26:47,342 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-11 20:26:47,531 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:26:47,532 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:26:47,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:26:47,532 INFO L85 PathProgramCache]: Analyzing trace with hash -961164198, now seen corresponding path program 17 times [2024-09-11 20:26:47,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:26:47,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019672044] [2024-09-11 20:26:47,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:26:47,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:26:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:48,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:48,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:48,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:48,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:48,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:48,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:48,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:48,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:48,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:48,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:49,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:49,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-11 20:26:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:49,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:49,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:50,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:50,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:50,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:50,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:50,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:50,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:51,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:51,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:51,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:51,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:51,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:51,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:26:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:26:51,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 92 proven. 1018 refuted. 0 times theorem prover too weak. 1067 trivial. 0 not checked. [2024-09-11 20:26:51,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:26:51,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019672044] [2024-09-11 20:26:51,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019672044] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:26:51,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345590546] [2024-09-11 20:26:51,707 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 20:26:51,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:26:51,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:26:51,709 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:26:51,710 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-11 20:26:51,864 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-09-11 20:26:51,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:26:51,870 WARN L260 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 313 conjuncts are in the unsatisfiable core [2024-09-11 20:26:51,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:26:53,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 14 proven. 976 refuted. 0 times theorem prover too weak. 1187 trivial. 0 not checked. [2024-09-11 20:26:53,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:27:02,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 101 proven. 1747 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2024-09-11 20:27:02,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345590546] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:27:02,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:27:02,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 38, 81] total 156 [2024-09-11 20:27:02,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602004591] [2024-09-11 20:27:02,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:27:02,195 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 156 states [2024-09-11 20:27:02,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:27:02,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2024-09-11 20:27:02,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=616, Invalid=23564, Unknown=0, NotChecked=0, Total=24180 [2024-09-11 20:27:02,197 INFO L87 Difference]: Start difference. First operand 83 states and 119 transitions. Second operand has 156 states, 152 states have (on average 1.381578947368421) internal successors, (210), 89 states have internal predecessors, (210), 30 states have call successors, (30), 1 states have call predecessors, (30), 51 states have return successors, (68), 67 states have call predecessors, (68), 30 states have call successors, (68) [2024-09-11 20:27:07,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:27:07,867 INFO L93 Difference]: Finished difference Result 115 states and 176 transitions. [2024-09-11 20:27:07,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-11 20:27:07,867 INFO L78 Accepts]: Start accepts. Automaton has has 156 states, 152 states have (on average 1.381578947368421) internal successors, (210), 89 states have internal predecessors, (210), 30 states have call successors, (30), 1 states have call predecessors, (30), 51 states have return successors, (68), 67 states have call predecessors, (68), 30 states have call successors, (68) Word has length 187 [2024-09-11 20:27:07,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:27:07,870 INFO L225 Difference]: With dead ends: 115 [2024-09-11 20:27:07,870 INFO L226 Difference]: Without dead ends: 95 [2024-09-11 20:27:07,871 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8727 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=2516, Invalid=40956, Unknown=0, NotChecked=0, Total=43472 [2024-09-11 20:27:07,872 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 370 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 9140 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 9605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 9140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-09-11 20:27:07,872 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1913 Invalid, 9605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 9140 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-09-11 20:27:07,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-09-11 20:27:07,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 86. [2024-09-11 20:27:07,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 59 states have internal predecessors, (62), 8 states have call successors, (8), 4 states have call predecessors, (8), 19 states have return successors, (54), 22 states have call predecessors, (54), 8 states have call successors, (54) [2024-09-11 20:27:07,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 124 transitions. [2024-09-11 20:27:07,899 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 124 transitions. Word has length 187 [2024-09-11 20:27:07,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:27:07,899 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 124 transitions. [2024-09-11 20:27:07,900 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 156 states, 152 states have (on average 1.381578947368421) internal successors, (210), 89 states have internal predecessors, (210), 30 states have call successors, (30), 1 states have call predecessors, (30), 51 states have return successors, (68), 67 states have call predecessors, (68), 30 states have call successors, (68) [2024-09-11 20:27:07,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:27:07,900 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 124 transitions. [2024-09-11 20:27:07,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-09-11 20:27:07,902 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:27:07,902 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 28, 26, 26, 26, 26, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:27:07,922 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-09-11 20:27:08,102 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:27:08,102 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:27:08,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:27:08,103 INFO L85 PathProgramCache]: Analyzing trace with hash 595897484, now seen corresponding path program 18 times [2024-09-11 20:27:08,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:27:08,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199172027] [2024-09-11 20:27:08,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:27:08,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:27:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:08,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:08,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:09,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:09,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:09,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:09,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:09,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:09,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:09,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:09,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:09,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:09,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:09,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-11 20:27:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:10,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:10,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:11,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:11,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:11,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:11,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:11,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:12,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:12,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:12,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:12,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:12,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:12,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:12,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:12,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2540 backedges. 100 proven. 1181 refuted. 0 times theorem prover too weak. 1259 trivial. 0 not checked. [2024-09-11 20:27:12,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:27:12,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199172027] [2024-09-11 20:27:12,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199172027] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:27:12,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656628100] [2024-09-11 20:27:12,955 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 20:27:12,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:27:12,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:27:12,956 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:27:12,957 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-11 20:27:13,123 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2024-09-11 20:27:13,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:27:13,129 WARN L260 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 337 conjuncts are in the unsatisfiable core [2024-09-11 20:27:13,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:27:15,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2540 backedges. 15 proven. 1135 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2024-09-11 20:27:15,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:27:24,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2540 backedges. 110 proven. 2048 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2024-09-11 20:27:24,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656628100] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:27:24,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:27:24,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 40, 87] total 167 [2024-09-11 20:27:24,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563725344] [2024-09-11 20:27:24,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:27:24,585 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 167 states [2024-09-11 20:27:24,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:27:24,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2024-09-11 20:27:24,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=662, Invalid=27060, Unknown=0, NotChecked=0, Total=27722 [2024-09-11 20:27:24,588 INFO L87 Difference]: Start difference. First operand 86 states and 124 transitions. Second operand has 167 states, 163 states have (on average 1.3803680981595092) internal successors, (225), 95 states have internal predecessors, (225), 32 states have call successors, (32), 1 states have call predecessors, (32), 55 states have return successors, (73), 72 states have call predecessors, (73), 32 states have call successors, (73) [2024-09-11 20:27:29,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:27:29,799 INFO L93 Difference]: Finished difference Result 119 states and 183 transitions. [2024-09-11 20:27:29,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-09-11 20:27:29,799 INFO L78 Accepts]: Start accepts. Automaton has has 167 states, 163 states have (on average 1.3803680981595092) internal successors, (225), 95 states have internal predecessors, (225), 32 states have call successors, (32), 1 states have call predecessors, (32), 55 states have return successors, (73), 72 states have call predecessors, (73), 32 states have call successors, (73) Word has length 201 [2024-09-11 20:27:29,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:27:29,800 INFO L225 Difference]: With dead ends: 119 [2024-09-11 20:27:29,800 INFO L226 Difference]: Without dead ends: 98 [2024-09-11 20:27:29,803 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9927 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=2784, Invalid=46722, Unknown=0, NotChecked=0, Total=49506 [2024-09-11 20:27:29,803 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 379 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 6968 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 7516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 6968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-09-11 20:27:29,803 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 1291 Invalid, 7516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 6968 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-09-11 20:27:29,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-09-11 20:27:29,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2024-09-11 20:27:29,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 60 states have (on average 1.0666666666666667) internal successors, (64), 61 states have internal predecessors, (64), 8 states have call successors, (8), 4 states have call predecessors, (8), 20 states have return successors, (57), 23 states have call predecessors, (57), 8 states have call successors, (57) [2024-09-11 20:27:29,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 129 transitions. [2024-09-11 20:27:29,833 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 129 transitions. Word has length 201 [2024-09-11 20:27:29,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:27:29,833 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 129 transitions. [2024-09-11 20:27:29,833 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 167 states, 163 states have (on average 1.3803680981595092) internal successors, (225), 95 states have internal predecessors, (225), 32 states have call successors, (32), 1 states have call predecessors, (32), 55 states have return successors, (73), 72 states have call predecessors, (73), 32 states have call successors, (73) [2024-09-11 20:27:29,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:27:29,834 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 129 transitions. [2024-09-11 20:27:29,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-09-11 20:27:29,834 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:27:29,835 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 28, 28, 28, 28, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:27:29,848 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-11 20:27:30,035 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-11 20:27:30,035 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:27:30,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:27:30,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1283398298, now seen corresponding path program 19 times [2024-09-11 20:27:30,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:27:30,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355034775] [2024-09-11 20:27:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:27:30,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:27:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:30,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:31,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:31,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:31,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:31,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:31,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:31,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:31,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:32,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:32,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:32,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:32,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:32,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:32,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-11 20:27:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:32,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:33,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:33,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:33,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:34,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:34,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:34,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:34,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:34,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:35,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:35,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:35,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:35,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:35,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:35,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:35,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:35,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2931 backedges. 108 proven. 1356 refuted. 0 times theorem prover too weak. 1467 trivial. 0 not checked. [2024-09-11 20:27:35,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:27:35,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355034775] [2024-09-11 20:27:35,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355034775] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:27:35,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539230994] [2024-09-11 20:27:35,829 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 20:27:35,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:27:35,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:27:35,830 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:27:35,831 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-11 20:27:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:36,002 WARN L260 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 361 conjuncts are in the unsatisfiable core [2024-09-11 20:27:36,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:27:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2931 backedges. 16 proven. 1306 refuted. 0 times theorem prover too weak. 1609 trivial. 0 not checked. [2024-09-11 20:27:38,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:27:48,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2931 backedges. 119 proven. 2373 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2024-09-11 20:27:48,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539230994] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:27:48,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:27:48,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 42, 93] total 178 [2024-09-11 20:27:48,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9815271] [2024-09-11 20:27:48,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:27:48,999 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 178 states [2024-09-11 20:27:48,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:27:49,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2024-09-11 20:27:49,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=708, Invalid=30798, Unknown=0, NotChecked=0, Total=31506 [2024-09-11 20:27:49,002 INFO L87 Difference]: Start difference. First operand 89 states and 129 transitions. Second operand has 178 states, 174 states have (on average 1.3793103448275863) internal successors, (240), 101 states have internal predecessors, (240), 34 states have call successors, (34), 1 states have call predecessors, (34), 59 states have return successors, (78), 77 states have call predecessors, (78), 34 states have call successors, (78) [2024-09-11 20:27:55,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:27:55,662 INFO L93 Difference]: Finished difference Result 123 states and 190 transitions. [2024-09-11 20:27:55,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-09-11 20:27:55,665 INFO L78 Accepts]: Start accepts. Automaton has has 178 states, 174 states have (on average 1.3793103448275863) internal successors, (240), 101 states have internal predecessors, (240), 34 states have call successors, (34), 1 states have call predecessors, (34), 59 states have return successors, (78), 77 states have call predecessors, (78), 34 states have call successors, (78) Word has length 215 [2024-09-11 20:27:55,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:27:55,666 INFO L225 Difference]: With dead ends: 123 [2024-09-11 20:27:55,666 INFO L226 Difference]: Without dead ends: 101 [2024-09-11 20:27:55,669 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11213 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=3064, Invalid=52868, Unknown=0, NotChecked=0, Total=55932 [2024-09-11 20:27:55,669 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 326 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 10188 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 10697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 10188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-09-11 20:27:55,670 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 2001 Invalid, 10697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 10188 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-09-11 20:27:55,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-09-11 20:27:55,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 92. [2024-09-11 20:27:55,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 62 states have (on average 1.064516129032258) internal successors, (66), 63 states have internal predecessors, (66), 8 states have call successors, (8), 4 states have call predecessors, (8), 21 states have return successors, (60), 24 states have call predecessors, (60), 8 states have call successors, (60) [2024-09-11 20:27:55,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 134 transitions. [2024-09-11 20:27:55,702 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 134 transitions. Word has length 215 [2024-09-11 20:27:55,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:27:55,702 INFO L474 AbstractCegarLoop]: Abstraction has 92 states and 134 transitions. [2024-09-11 20:27:55,702 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 178 states, 174 states have (on average 1.3793103448275863) internal successors, (240), 101 states have internal predecessors, (240), 34 states have call successors, (34), 1 states have call predecessors, (34), 59 states have return successors, (78), 77 states have call predecessors, (78), 34 states have call successors, (78) [2024-09-11 20:27:55,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:27:55,703 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 134 transitions. [2024-09-11 20:27:55,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-09-11 20:27:55,703 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:27:55,703 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 32, 30, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:27:55,716 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-11 20:27:55,904 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-11 20:27:55,904 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:27:55,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:27:55,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1715227220, now seen corresponding path program 20 times [2024-09-11 20:27:55,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:27:55,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867730010] [2024-09-11 20:27:55,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:27:55,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:27:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:56,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:57,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:57,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:57,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:57,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:57,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:57,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:57,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:58,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:58,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:58,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:58,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:58,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:58,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:58,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-11 20:27:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:58,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:59,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:27:59,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:27:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:00,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:00,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:00,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:00,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:01,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:01,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:01,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:01,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:01,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:01,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:02,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:02,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:02,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:02,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 116 proven. 1543 refuted. 0 times theorem prover too weak. 1691 trivial. 0 not checked. [2024-09-11 20:28:02,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:28:02,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867730010] [2024-09-11 20:28:02,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867730010] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:28:02,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699467009] [2024-09-11 20:28:02,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 20:28:02,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:28:02,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:28:02,454 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:28:02,454 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-11 20:28:02,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 20:28:02,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:28:02,648 WARN L260 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 385 conjuncts are in the unsatisfiable core [2024-09-11 20:28:02,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:28:05,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 17 proven. 1489 refuted. 0 times theorem prover too weak. 1844 trivial. 0 not checked. [2024-09-11 20:28:05,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:28:17,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 128 proven. 2722 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-09-11 20:28:17,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699467009] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:28:17,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:28:17,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 44, 99] total 189 [2024-09-11 20:28:17,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300014076] [2024-09-11 20:28:17,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:28:17,282 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 189 states [2024-09-11 20:28:17,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:28:17,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2024-09-11 20:28:17,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=34778, Unknown=0, NotChecked=0, Total=35532 [2024-09-11 20:28:17,284 INFO L87 Difference]: Start difference. First operand 92 states and 134 transitions. Second operand has 189 states, 185 states have (on average 1.3783783783783783) internal successors, (255), 107 states have internal predecessors, (255), 36 states have call successors, (36), 1 states have call predecessors, (36), 63 states have return successors, (83), 82 states have call predecessors, (83), 36 states have call successors, (83) [2024-09-11 20:28:24,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:28:24,901 INFO L93 Difference]: Finished difference Result 127 states and 197 transitions. [2024-09-11 20:28:24,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-09-11 20:28:24,902 INFO L78 Accepts]: Start accepts. Automaton has has 189 states, 185 states have (on average 1.3783783783783783) internal successors, (255), 107 states have internal predecessors, (255), 36 states have call successors, (36), 1 states have call predecessors, (36), 63 states have return successors, (83), 82 states have call predecessors, (83), 36 states have call successors, (83) Word has length 229 [2024-09-11 20:28:24,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:28:24,903 INFO L225 Difference]: With dead ends: 127 [2024-09-11 20:28:24,903 INFO L226 Difference]: Without dead ends: 104 [2024-09-11 20:28:24,906 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12563 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=3356, Invalid=59394, Unknown=0, NotChecked=0, Total=62750 [2024-09-11 20:28:24,907 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 427 mSDsluCounter, 2302 mSDsCounter, 0 mSdLazyCounter, 11787 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 12313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 11787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:28:24,907 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 2330 Invalid, 12313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 11787 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-09-11 20:28:24,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-11 20:28:24,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95. [2024-09-11 20:28:24,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 64 states have (on average 1.0625) internal successors, (68), 65 states have internal predecessors, (68), 8 states have call successors, (8), 4 states have call predecessors, (8), 22 states have return successors, (63), 25 states have call predecessors, (63), 8 states have call successors, (63) [2024-09-11 20:28:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 139 transitions. [2024-09-11 20:28:24,941 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 139 transitions. Word has length 229 [2024-09-11 20:28:24,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:28:24,942 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 139 transitions. [2024-09-11 20:28:24,942 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 189 states, 185 states have (on average 1.3783783783783783) internal successors, (255), 107 states have internal predecessors, (255), 36 states have call successors, (36), 1 states have call predecessors, (36), 63 states have return successors, (83), 82 states have call predecessors, (83), 36 states have call successors, (83) [2024-09-11 20:28:24,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:28:24,942 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 139 transitions. [2024-09-11 20:28:24,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-09-11 20:28:24,943 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:28:24,943 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 32, 32, 32, 32, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:28:24,960 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-11 20:28:25,143 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:28:25,144 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:28:25,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:28:25,144 INFO L85 PathProgramCache]: Analyzing trace with hash -682233638, now seen corresponding path program 21 times [2024-09-11 20:28:25,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:28:25,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623396499] [2024-09-11 20:28:25,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:28:25,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:28:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:26,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:26,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:26,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:26,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:27,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:27,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:27,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:27,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:27,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:27,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:27,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:27,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:27,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:28,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:28,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:28,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-11 20:28:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:28,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:29,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:29,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:30,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:30,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:30,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:31,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:31,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:31,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:31,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:31,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:32,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:32,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:32,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:32,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:32,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:32,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:32,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:32,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 124 proven. 1742 refuted. 0 times theorem prover too weak. 1931 trivial. 0 not checked. [2024-09-11 20:28:32,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:28:32,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623396499] [2024-09-11 20:28:32,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623396499] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:28:32,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685084870] [2024-09-11 20:28:32,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 20:28:32,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:28:32,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:28:32,960 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:28:32,961 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-11 20:28:33,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2024-09-11 20:28:33,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:28:33,245 WARN L260 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 409 conjuncts are in the unsatisfiable core [2024-09-11 20:28:33,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:28:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 18 proven. 1684 refuted. 0 times theorem prover too weak. 2095 trivial. 0 not checked. [2024-09-11 20:28:36,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:28:50,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 137 proven. 3095 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2024-09-11 20:28:50,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685084870] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:28:50,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:28:50,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 46, 105] total 200 [2024-09-11 20:28:50,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365927446] [2024-09-11 20:28:50,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:28:50,041 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 200 states [2024-09-11 20:28:50,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:28:50,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2024-09-11 20:28:50,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=800, Invalid=39000, Unknown=0, NotChecked=0, Total=39800 [2024-09-11 20:28:50,046 INFO L87 Difference]: Start difference. First operand 95 states and 139 transitions. Second operand has 200 states, 196 states have (on average 1.3775510204081634) internal successors, (270), 113 states have internal predecessors, (270), 38 states have call successors, (38), 1 states have call predecessors, (38), 67 states have return successors, (88), 87 states have call predecessors, (88), 38 states have call successors, (88) [2024-09-11 20:28:58,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:28:58,241 INFO L93 Difference]: Finished difference Result 131 states and 204 transitions. [2024-09-11 20:28:58,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-09-11 20:28:58,241 INFO L78 Accepts]: Start accepts. Automaton has has 200 states, 196 states have (on average 1.3775510204081634) internal successors, (270), 113 states have internal predecessors, (270), 38 states have call successors, (38), 1 states have call predecessors, (38), 67 states have return successors, (88), 87 states have call predecessors, (88), 38 states have call successors, (88) Word has length 243 [2024-09-11 20:28:58,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:28:58,243 INFO L225 Difference]: With dead ends: 131 [2024-09-11 20:28:58,243 INFO L226 Difference]: Without dead ends: 107 [2024-09-11 20:28:58,248 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13999 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=3660, Invalid=66300, Unknown=0, NotChecked=0, Total=69960 [2024-09-11 20:28:58,248 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 474 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 11686 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 12114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 11686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-09-11 20:28:58,248 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 2264 Invalid, 12114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 11686 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-09-11 20:28:58,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-09-11 20:28:58,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 98. [2024-09-11 20:28:58,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 66 states have (on average 1.0606060606060606) internal successors, (70), 67 states have internal predecessors, (70), 8 states have call successors, (8), 4 states have call predecessors, (8), 23 states have return successors, (66), 26 states have call predecessors, (66), 8 states have call successors, (66) [2024-09-11 20:28:58,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 144 transitions. [2024-09-11 20:28:58,287 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 144 transitions. Word has length 243 [2024-09-11 20:28:58,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:28:58,288 INFO L474 AbstractCegarLoop]: Abstraction has 98 states and 144 transitions. [2024-09-11 20:28:58,288 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 200 states, 196 states have (on average 1.3775510204081634) internal successors, (270), 113 states have internal predecessors, (270), 38 states have call successors, (38), 1 states have call predecessors, (38), 67 states have return successors, (88), 87 states have call predecessors, (88), 38 states have call successors, (88) [2024-09-11 20:28:58,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:28:58,288 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 144 transitions. [2024-09-11 20:28:58,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-09-11 20:28:58,289 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:28:58,289 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 34, 34, 34, 34, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:28:58,304 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-11 20:28:58,490 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-11 20:28:58,490 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:28:58,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:28:58,490 INFO L85 PathProgramCache]: Analyzing trace with hash -387713332, now seen corresponding path program 22 times [2024-09-11 20:28:58,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:28:58,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056791722] [2024-09-11 20:28:58,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:28:58,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:28:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:59,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:28:59,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:28:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:00,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:00,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:00,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:01,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:01,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:01,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:01,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:01,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:01,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:01,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:01,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:02,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:02,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:02,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:02,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-11 20:29:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:02,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:03,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:03,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:04,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:04,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:05,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:05,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:05,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:06,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:06,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:06,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:06,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:06,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:07,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:07,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:07,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:07,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:07,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:07,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:29:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:29:07,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4272 backedges. 132 proven. 1953 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2024-09-11 20:29:07,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:29:07,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056791722] [2024-09-11 20:29:07,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056791722] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:29:07,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838147034] [2024-09-11 20:29:07,746 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 20:29:07,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:29:07,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:29:07,748 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:29:07,749 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-11 20:29:08,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 20:29:08,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:29:08,016 WARN L260 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 433 conjuncts are in the unsatisfiable core [2024-09-11 20:29:08,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:29:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4272 backedges. 19 proven. 1891 refuted. 0 times theorem prover too weak. 2362 trivial. 0 not checked. [2024-09-11 20:29:11,256 INFO L327 TraceCheckSpWp]: Computing backward predicates...