./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 46c0d9f9d80db77d4c60fa541a095100d438c0f00ce4cea8ddaeb964f10aa3ad --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 02:44:26,340 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 02:44:26,402 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 02:44:26,405 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 02:44:26,406 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 02:44:26,427 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 02:44:26,428 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 02:44:26,428 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 02:44:26,428 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 02:44:26,429 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 02:44:26,429 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 02:44:26,429 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 02:44:26,429 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 02:44:26,430 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 02:44:26,430 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 02:44:26,432 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 02:44:26,433 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 02:44:26,435 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 02:44:26,435 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 02:44:26,435 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 02:44:26,436 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 02:44:26,436 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 02:44:26,437 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 02:44:26,437 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 02:44:26,438 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 02:44:26,438 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 02:44:26,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 02:44:26,438 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 02:44:26,438 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 02:44:26,438 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 02:44:26,439 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 02:44:26,439 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 02:44:26,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:44:26,440 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 02:44:26,440 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 02:44:26,440 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 02:44:26,440 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 02:44:26,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 02:44:26,440 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 02:44:26,441 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 02:44:26,441 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 02:44:26,441 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 02:44:26,441 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/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46c0d9f9d80db77d4c60fa541a095100d438c0f00ce4cea8ddaeb964f10aa3ad [2024-10-24 02:44:26,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 02:44:26,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 02:44:26,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 02:44:26,650 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 02:44:26,650 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 02:44:26,651 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c [2024-10-24 02:44:27,886 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 02:44:28,235 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 02:44:28,236 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c [2024-10-24 02:44:28,261 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30a7109fd/a8034478b52c44e7b2e0a0d940ac7a91/FLAG16c5adb3b [2024-10-24 02:44:28,457 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30a7109fd/a8034478b52c44e7b2e0a0d940ac7a91 [2024-10-24 02:44:28,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 02:44:28,460 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 02:44:28,461 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 02:44:28,461 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 02:44:28,465 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 02:44:28,466 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:44:28" (1/1) ... [2024-10-24 02:44:28,466 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e31e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:28, skipping insertion in model container [2024-10-24 02:44:28,466 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:44:28" (1/1) ... [2024-10-24 02:44:28,544 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 02:44:28,844 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c[8616,8629] [2024-10-24 02:44:28,891 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c[15552,15565] [2024-10-24 02:44:29,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:44:29,425 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 02:44:29,454 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c[8616,8629] [2024-10-24 02:44:29,467 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c[15552,15565] [2024-10-24 02:44:29,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:44:29,774 INFO L204 MainTranslator]: Completed translation [2024-10-24 02:44:29,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:29 WrapperNode [2024-10-24 02:44:29,775 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 02:44:29,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 02:44:29,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 02:44:29,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 02:44:29,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:29" (1/1) ... [2024-10-24 02:44:29,816 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:29" (1/1) ... [2024-10-24 02:44:30,057 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5039 [2024-10-24 02:44:30,058 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 02:44:30,059 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 02:44:30,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 02:44:30,059 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 02:44:30,067 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:29" (1/1) ... [2024-10-24 02:44:30,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:29" (1/1) ... [2024-10-24 02:44:30,104 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:29" (1/1) ... [2024-10-24 02:44:30,286 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]. [2024-10-24 02:44:30,286 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:29" (1/1) ... [2024-10-24 02:44:30,286 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:29" (1/1) ... [2024-10-24 02:44:30,397 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:29" (1/1) ... [2024-10-24 02:44:30,416 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:29" (1/1) ... [2024-10-24 02:44:30,439 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:29" (1/1) ... [2024-10-24 02:44:30,451 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:29" (1/1) ... [2024-10-24 02:44:30,491 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 02:44:30,493 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 02:44:30,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 02:44:30,494 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 02:44:30,495 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:29" (1/1) ... [2024-10-24 02:44:30,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:44:30,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:44:30,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 02:44:30,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 02:44:30,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 02:44:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 02:44:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 02:44:30,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 02:44:30,638 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 02:44:30,640 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 02:44:33,782 INFO L? ?]: Removed 737 outVars from TransFormulas that were not future-live. [2024-10-24 02:44:33,782 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 02:44:33,829 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 02:44:33,832 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 02:44:33,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:44:33 BoogieIcfgContainer [2024-10-24 02:44:33,833 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 02:44:33,834 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 02:44:33,835 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 02:44:33,837 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 02:44:33,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:44:28" (1/3) ... [2024-10-24 02:44:33,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df60c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:44:33, skipping insertion in model container [2024-10-24 02:44:33,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:44:29" (2/3) ... [2024-10-24 02:44:33,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df60c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:44:33, skipping insertion in model container [2024-10-24 02:44:33,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:44:33" (3/3) ... [2024-10-24 02:44:33,840 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c [2024-10-24 02:44:33,853 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 02:44:33,854 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 02:44:33,951 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 02:44:33,962 INFO L333 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=LoopHeads, 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;@f6c6a3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 02:44:33,963 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 02:44:33,969 INFO L276 IsEmpty]: Start isEmpty. Operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:33,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-24 02:44:33,978 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:33,978 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:33,979 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:33,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:33,984 INFO L85 PathProgramCache]: Analyzing trace with hash -404549255, now seen corresponding path program 1 times [2024-10-24 02:44:33,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:33,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202532669] [2024-10-24 02:44:33,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:33,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:34,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:34,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202532669] [2024-10-24 02:44:34,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202532669] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:44:34,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:44:34,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 02:44:34,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170176180] [2024-10-24 02:44:34,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:44:34,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 02:44:34,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:34,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 02:44:34,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 02:44:34,190 INFO L87 Difference]: Start difference. First operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:34,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:34,273 INFO L93 Difference]: Finished difference Result 1613 states and 3180 transitions. [2024-10-24 02:44:34,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 02:44:34,280 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-24 02:44:34,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:34,297 INFO L225 Difference]: With dead ends: 1613 [2024-10-24 02:44:34,297 INFO L226 Difference]: Without dead ends: 816 [2024-10-24 02:44:34,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 02:44:34,306 INFO L432 NwaCegarLoop]: 1545 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:34,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1545 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:44:34,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2024-10-24 02:44:34,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2024-10-24 02:44:34,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.898034398034398) internal successors, (1545), 815 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:34,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1545 transitions. [2024-10-24 02:44:34,365 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1545 transitions. Word has length 19 [2024-10-24 02:44:34,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:34,365 INFO L471 AbstractCegarLoop]: Abstraction has 816 states and 1545 transitions. [2024-10-24 02:44:34,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:34,366 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1545 transitions. [2024-10-24 02:44:34,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-24 02:44:34,372 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:34,372 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:34,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 02:44:34,372 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:34,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:34,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1684412933, now seen corresponding path program 1 times [2024-10-24 02:44:34,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:34,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635761800] [2024-10-24 02:44:34,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:34,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:34,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:34,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:34,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635761800] [2024-10-24 02:44:34,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635761800] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:44:34,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:44:34,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:44:34,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419421935] [2024-10-24 02:44:34,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:44:34,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:44:34,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:34,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:44:34,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:44:34,507 INFO L87 Difference]: Start difference. First operand 816 states and 1545 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:34,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:34,575 INFO L93 Difference]: Finished difference Result 889 states and 1660 transitions. [2024-10-24 02:44:34,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:44:34,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-24 02:44:34,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:34,580 INFO L225 Difference]: With dead ends: 889 [2024-10-24 02:44:34,580 INFO L226 Difference]: Without dead ends: 851 [2024-10-24 02:44:34,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:44:34,582 INFO L432 NwaCegarLoop]: 1540 mSDtfsCounter, 55 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4592 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:34,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4592 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:44:34,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2024-10-24 02:44:34,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 816. [2024-10-24 02:44:34,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.8697788697788698) internal successors, (1522), 815 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:34,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1522 transitions. [2024-10-24 02:44:34,605 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1522 transitions. Word has length 19 [2024-10-24 02:44:34,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:34,605 INFO L471 AbstractCegarLoop]: Abstraction has 816 states and 1522 transitions. [2024-10-24 02:44:34,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:34,606 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1522 transitions. [2024-10-24 02:44:34,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-24 02:44:34,608 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:34,608 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:34,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 02:44:34,609 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:34,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:34,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1796642934, now seen corresponding path program 1 times [2024-10-24 02:44:34,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:34,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368127661] [2024-10-24 02:44:34,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:34,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:34,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:34,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368127661] [2024-10-24 02:44:34,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368127661] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:44:34,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:44:34,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 02:44:34,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802441083] [2024-10-24 02:44:34,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:44:34,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 02:44:34,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:34,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 02:44:34,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:44:34,742 INFO L87 Difference]: Start difference. First operand 816 states and 1522 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:34,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:34,924 INFO L93 Difference]: Finished difference Result 1096 states and 1970 transitions. [2024-10-24 02:44:34,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 02:44:34,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-10-24 02:44:34,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:34,932 INFO L225 Difference]: With dead ends: 1096 [2024-10-24 02:44:34,932 INFO L226 Difference]: Without dead ends: 1061 [2024-10-24 02:44:34,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:44:34,933 INFO L432 NwaCegarLoop]: 1515 mSDtfsCounter, 6246 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6246 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:34,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6246 Valid, 2155 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:44:34,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2024-10-24 02:44:34,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 849. [2024-10-24 02:44:34,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 847 states have (on average 1.859504132231405) internal successors, (1575), 848 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:34,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1575 transitions. [2024-10-24 02:44:34,948 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1575 transitions. Word has length 41 [2024-10-24 02:44:34,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:34,951 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1575 transitions. [2024-10-24 02:44:34,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:34,951 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1575 transitions. [2024-10-24 02:44:34,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-24 02:44:34,952 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:34,952 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:34,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 02:44:34,952 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:34,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:34,952 INFO L85 PathProgramCache]: Analyzing trace with hash -125681594, now seen corresponding path program 1 times [2024-10-24 02:44:34,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:34,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455555695] [2024-10-24 02:44:34,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:34,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:35,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:35,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:35,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455555695] [2024-10-24 02:44:35,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455555695] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:44:35,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:44:35,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:44:35,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634159220] [2024-10-24 02:44:35,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:44:35,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:44:35,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:35,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:44:35,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:44:35,024 INFO L87 Difference]: Start difference. First operand 849 states and 1575 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:35,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:35,054 INFO L93 Difference]: Finished difference Result 974 states and 1774 transitions. [2024-10-24 02:44:35,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:44:35,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-10-24 02:44:35,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:35,057 INFO L225 Difference]: With dead ends: 974 [2024-10-24 02:44:35,058 INFO L226 Difference]: Without dead ends: 906 [2024-10-24 02:44:35,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:44:35,060 INFO L432 NwaCegarLoop]: 1517 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:35,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1567 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:44:35,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2024-10-24 02:44:35,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2024-10-24 02:44:35,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8414634146341464) internal successors, (1661), 903 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:35,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1661 transitions. [2024-10-24 02:44:35,074 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1661 transitions. Word has length 43 [2024-10-24 02:44:35,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:35,075 INFO L471 AbstractCegarLoop]: Abstraction has 904 states and 1661 transitions. [2024-10-24 02:44:35,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:35,075 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1661 transitions. [2024-10-24 02:44:35,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-24 02:44:35,078 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:35,078 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:35,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 02:44:35,078 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:35,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:35,079 INFO L85 PathProgramCache]: Analyzing trace with hash -123536642, now seen corresponding path program 1 times [2024-10-24 02:44:35,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:35,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074781181] [2024-10-24 02:44:35,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:35,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:35,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:35,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:35,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074781181] [2024-10-24 02:44:35,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074781181] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:44:35,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:44:35,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 02:44:35,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845914819] [2024-10-24 02:44:35,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:44:35,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 02:44:35,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:35,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 02:44:35,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:44:35,259 INFO L87 Difference]: Start difference. First operand 904 states and 1661 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:35,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:35,374 INFO L93 Difference]: Finished difference Result 1029 states and 1857 transitions. [2024-10-24 02:44:35,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 02:44:35,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-10-24 02:44:35,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:35,377 INFO L225 Difference]: With dead ends: 1029 [2024-10-24 02:44:35,378 INFO L226 Difference]: Without dead ends: 906 [2024-10-24 02:44:35,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:44:35,379 INFO L432 NwaCegarLoop]: 1513 mSDtfsCounter, 5916 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5916 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:35,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5916 Valid, 1666 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:44:35,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2024-10-24 02:44:35,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2024-10-24 02:44:35,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8392461197339247) internal successors, (1659), 903 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:35,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1659 transitions. [2024-10-24 02:44:35,391 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1659 transitions. Word has length 43 [2024-10-24 02:44:35,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:35,392 INFO L471 AbstractCegarLoop]: Abstraction has 904 states and 1659 transitions. [2024-10-24 02:44:35,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:35,392 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1659 transitions. [2024-10-24 02:44:35,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-24 02:44:35,393 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:35,393 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:35,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 02:44:35,393 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:35,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:35,394 INFO L85 PathProgramCache]: Analyzing trace with hash 336976631, now seen corresponding path program 1 times [2024-10-24 02:44:35,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:35,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27373529] [2024-10-24 02:44:35,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:35,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:35,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:35,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27373529] [2024-10-24 02:44:35,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27373529] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:44:35,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:44:35,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:44:35,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344499599] [2024-10-24 02:44:35,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:44:35,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:44:35,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:35,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:44:35,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:44:35,515 INFO L87 Difference]: Start difference. First operand 904 states and 1659 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:35,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:35,553 INFO L93 Difference]: Finished difference Result 910 states and 1666 transitions. [2024-10-24 02:44:35,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:44:35,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-10-24 02:44:35,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:35,557 INFO L225 Difference]: With dead ends: 910 [2024-10-24 02:44:35,557 INFO L226 Difference]: Without dead ends: 908 [2024-10-24 02:44:35,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:44:35,558 INFO L432 NwaCegarLoop]: 1518 mSDtfsCounter, 0 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:35,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4546 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:44:35,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2024-10-24 02:44:35,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 908. [2024-10-24 02:44:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 906 states have (on average 1.8344370860927153) internal successors, (1662), 907 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:35,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1662 transitions. [2024-10-24 02:44:35,575 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1662 transitions. Word has length 44 [2024-10-24 02:44:35,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:35,575 INFO L471 AbstractCegarLoop]: Abstraction has 908 states and 1662 transitions. [2024-10-24 02:44:35,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:35,575 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1662 transitions. [2024-10-24 02:44:35,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-24 02:44:35,576 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:35,576 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:35,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 02:44:35,577 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:35,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:35,577 INFO L85 PathProgramCache]: Analyzing trace with hash 514996542, now seen corresponding path program 1 times [2024-10-24 02:44:35,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:35,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516475997] [2024-10-24 02:44:35,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:35,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:35,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:35,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:35,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516475997] [2024-10-24 02:44:35,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516475997] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:44:35,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:44:35,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:44:35,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461600854] [2024-10-24 02:44:35,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:44:35,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:44:35,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:35,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:44:35,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:44:35,621 INFO L87 Difference]: Start difference. First operand 908 states and 1662 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:35,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:35,651 INFO L93 Difference]: Finished difference Result 1046 states and 1875 transitions. [2024-10-24 02:44:35,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:44:35,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-10-24 02:44:35,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:35,655 INFO L225 Difference]: With dead ends: 1046 [2024-10-24 02:44:35,655 INFO L226 Difference]: Without dead ends: 974 [2024-10-24 02:44:35,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:44:35,656 INFO L432 NwaCegarLoop]: 1559 mSDtfsCounter, 1484 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:35,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:44:35,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2024-10-24 02:44:35,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 972. [2024-10-24 02:44:35,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 970 states have (on average 1.81340206185567) internal successors, (1759), 971 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:35,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1759 transitions. [2024-10-24 02:44:35,675 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1759 transitions. Word has length 45 [2024-10-24 02:44:35,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:35,676 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1759 transitions. [2024-10-24 02:44:35,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:35,676 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1759 transitions. [2024-10-24 02:44:35,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-24 02:44:35,676 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:35,677 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:35,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 02:44:35,677 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:35,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:35,677 INFO L85 PathProgramCache]: Analyzing trace with hash -70715586, now seen corresponding path program 1 times [2024-10-24 02:44:35,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:35,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470719246] [2024-10-24 02:44:35,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:35,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:35,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:35,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470719246] [2024-10-24 02:44:35,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470719246] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:44:35,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:44:35,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:44:35,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303629586] [2024-10-24 02:44:35,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:44:35,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:44:35,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:35,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:44:35,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:44:35,724 INFO L87 Difference]: Start difference. First operand 972 states and 1759 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:35,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:35,763 INFO L93 Difference]: Finished difference Result 1326 states and 2299 transitions. [2024-10-24 02:44:35,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:44:35,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-10-24 02:44:35,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:35,769 INFO L225 Difference]: With dead ends: 1326 [2024-10-24 02:44:35,769 INFO L226 Difference]: Without dead ends: 1137 [2024-10-24 02:44:35,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:44:35,771 INFO L432 NwaCegarLoop]: 1551 mSDtfsCounter, 1480 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:35,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:44:35,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2024-10-24 02:44:35,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1135. [2024-10-24 02:44:35,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1133 states have (on average 1.766107678729038) internal successors, (2001), 1134 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:35,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2001 transitions. [2024-10-24 02:44:35,795 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2001 transitions. Word has length 45 [2024-10-24 02:44:35,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:35,795 INFO L471 AbstractCegarLoop]: Abstraction has 1135 states and 2001 transitions. [2024-10-24 02:44:35,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:35,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2001 transitions. [2024-10-24 02:44:35,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-24 02:44:35,796 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:35,797 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:35,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 02:44:35,797 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:35,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:35,797 INFO L85 PathProgramCache]: Analyzing trace with hash 818017854, now seen corresponding path program 1 times [2024-10-24 02:44:35,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:35,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383925030] [2024-10-24 02:44:35,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:35,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:35,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:35,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383925030] [2024-10-24 02:44:35,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383925030] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:44:35,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:44:35,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:44:35,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799809074] [2024-10-24 02:44:35,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:44:35,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:44:35,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:35,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:44:35,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:44:35,854 INFO L87 Difference]: Start difference. First operand 1135 states and 2001 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:35,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:35,891 INFO L93 Difference]: Finished difference Result 1791 states and 2983 transitions. [2024-10-24 02:44:35,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:44:35,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-10-24 02:44:35,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:35,899 INFO L225 Difference]: With dead ends: 1791 [2024-10-24 02:44:35,899 INFO L226 Difference]: Without dead ends: 1439 [2024-10-24 02:44:35,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:44:35,901 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 1478 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:35,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1617 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:44:35,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2024-10-24 02:44:35,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1437. [2024-10-24 02:44:35,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1435 states have (on average 1.6982578397212544) internal successors, (2437), 1436 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:35,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2437 transitions. [2024-10-24 02:44:35,935 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2437 transitions. Word has length 45 [2024-10-24 02:44:35,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:35,936 INFO L471 AbstractCegarLoop]: Abstraction has 1437 states and 2437 transitions. [2024-10-24 02:44:35,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:35,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2437 transitions. [2024-10-24 02:44:35,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-24 02:44:35,937 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:35,937 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:35,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 02:44:35,937 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:35,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:35,938 INFO L85 PathProgramCache]: Analyzing trace with hash 554940478, now seen corresponding path program 1 times [2024-10-24 02:44:35,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:35,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964953627] [2024-10-24 02:44:35,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:35,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:35,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:35,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:35,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964953627] [2024-10-24 02:44:35,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964953627] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:44:35,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:44:35,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:44:35,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592932756] [2024-10-24 02:44:35,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:44:35,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:44:35,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:35,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:44:35,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:44:35,998 INFO L87 Difference]: Start difference. First operand 1437 states and 2437 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:36,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:36,039 INFO L93 Difference]: Finished difference Result 2649 states and 4207 transitions. [2024-10-24 02:44:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:44:36,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-10-24 02:44:36,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:36,046 INFO L225 Difference]: With dead ends: 2649 [2024-10-24 02:44:36,046 INFO L226 Difference]: Without dead ends: 1995 [2024-10-24 02:44:36,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:44:36,048 INFO L432 NwaCegarLoop]: 1561 mSDtfsCounter, 1482 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:36,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:44:36,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2024-10-24 02:44:36,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1993. [2024-10-24 02:44:36,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1991 states have (on average 1.6137619286790557) internal successors, (3213), 1992 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:36,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3213 transitions. [2024-10-24 02:44:36,096 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3213 transitions. Word has length 45 [2024-10-24 02:44:36,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:36,097 INFO L471 AbstractCegarLoop]: Abstraction has 1993 states and 3213 transitions. [2024-10-24 02:44:36,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:36,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3213 transitions. [2024-10-24 02:44:36,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-24 02:44:36,098 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:36,098 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:36,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 02:44:36,098 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:36,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:36,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1594147338, now seen corresponding path program 1 times [2024-10-24 02:44:36,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:36,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085225127] [2024-10-24 02:44:36,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:36,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:36,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:36,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085225127] [2024-10-24 02:44:36,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085225127] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:44:36,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:44:36,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:44:36,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083047966] [2024-10-24 02:44:36,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:44:36,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:44:36,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:36,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:44:36,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:44:36,218 INFO L87 Difference]: Start difference. First operand 1993 states and 3213 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:40,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:40,829 INFO L93 Difference]: Finished difference Result 4248 states and 7522 transitions. [2024-10-24 02:44:40,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:44:40,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-10-24 02:44:40,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:40,838 INFO L225 Difference]: With dead ends: 4248 [2024-10-24 02:44:40,838 INFO L226 Difference]: Without dead ends: 3495 [2024-10-24 02:44:40,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:44:40,839 INFO L432 NwaCegarLoop]: 755 mSDtfsCounter, 2360 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:40,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2360 Valid, 773 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-10-24 02:44:40,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2024-10-24 02:44:40,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 3495. [2024-10-24 02:44:40,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3495 states, 3493 states have (on average 1.5250501002004009) internal successors, (5327), 3494 states have internal predecessors, (5327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:40,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 5327 transitions. [2024-10-24 02:44:40,904 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 5327 transitions. Word has length 59 [2024-10-24 02:44:40,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:40,904 INFO L471 AbstractCegarLoop]: Abstraction has 3495 states and 5327 transitions. [2024-10-24 02:44:40,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:40,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 5327 transitions. [2024-10-24 02:44:40,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 02:44:40,905 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:40,905 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:40,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 02:44:40,906 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:40,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:40,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1873610167, now seen corresponding path program 1 times [2024-10-24 02:44:40,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:40,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656185716] [2024-10-24 02:44:40,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:40,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:41,005 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:44:41,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:41,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656185716] [2024-10-24 02:44:41,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656185716] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:44:41,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:44:41,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 02:44:41,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709787253] [2024-10-24 02:44:41,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:44:41,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 02:44:41,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:41,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 02:44:41,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:44:41,007 INFO L87 Difference]: Start difference. First operand 3495 states and 5327 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:41,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:41,140 INFO L93 Difference]: Finished difference Result 8257 states and 12188 transitions. [2024-10-24 02:44:41,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 02:44:41,140 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-24 02:44:41,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:41,158 INFO L225 Difference]: With dead ends: 8257 [2024-10-24 02:44:41,158 INFO L226 Difference]: Without dead ends: 7391 [2024-10-24 02:44:41,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-24 02:44:41,162 INFO L432 NwaCegarLoop]: 1566 mSDtfsCounter, 4637 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:41,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 3284 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:44:41,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7391 states. [2024-10-24 02:44:41,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7391 to 4535. [2024-10-24 02:44:41,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4535 states, 4533 states have (on average 1.5016545334215752) internal successors, (6807), 4534 states have internal predecessors, (6807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:41,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4535 states to 4535 states and 6807 transitions. [2024-10-24 02:44:41,259 INFO L78 Accepts]: Start accepts. Automaton has 4535 states and 6807 transitions. Word has length 61 [2024-10-24 02:44:41,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:41,260 INFO L471 AbstractCegarLoop]: Abstraction has 4535 states and 6807 transitions. [2024-10-24 02:44:41,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:41,260 INFO L276 IsEmpty]: Start isEmpty. Operand 4535 states and 6807 transitions. [2024-10-24 02:44:41,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 02:44:41,261 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:41,261 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:41,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 02:44:41,261 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:41,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:41,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1287898039, now seen corresponding path program 1 times [2024-10-24 02:44:41,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:41,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472305265] [2024-10-24 02:44:41,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:41,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 02:44:41,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:41,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472305265] [2024-10-24 02:44:41,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472305265] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:44:41,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:44:41,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 02:44:41,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576581919] [2024-10-24 02:44:41,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:44:41,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 02:44:41,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:41,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 02:44:41,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:44:41,369 INFO L87 Difference]: Start difference. First operand 4535 states and 6807 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:41,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:41,522 INFO L93 Difference]: Finished difference Result 9465 states and 13916 transitions. [2024-10-24 02:44:41,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 02:44:41,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-24 02:44:41,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:41,546 INFO L225 Difference]: With dead ends: 9465 [2024-10-24 02:44:41,546 INFO L226 Difference]: Without dead ends: 8255 [2024-10-24 02:44:41,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-24 02:44:41,552 INFO L432 NwaCegarLoop]: 1566 mSDtfsCounter, 4672 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4672 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:41,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4672 Valid, 3304 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:44:41,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8255 states. [2024-10-24 02:44:41,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8255 to 6175. [2024-10-24 02:44:41,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6175 states, 6173 states have (on average 1.4798315243803661) internal successors, (9135), 6174 states have internal predecessors, (9135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:41,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6175 states to 6175 states and 9135 transitions. [2024-10-24 02:44:41,725 INFO L78 Accepts]: Start accepts. Automaton has 6175 states and 9135 transitions. Word has length 61 [2024-10-24 02:44:41,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:41,725 INFO L471 AbstractCegarLoop]: Abstraction has 6175 states and 9135 transitions. [2024-10-24 02:44:41,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:41,726 INFO L276 IsEmpty]: Start isEmpty. Operand 6175 states and 9135 transitions. [2024-10-24 02:44:41,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 02:44:41,726 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:41,727 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:41,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 02:44:41,727 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:41,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:41,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2118335817, now seen corresponding path program 1 times [2024-10-24 02:44:41,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:41,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290838406] [2024-10-24 02:44:41,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:41,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:41,803 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 02:44:41,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:41,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290838406] [2024-10-24 02:44:41,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290838406] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:44:41,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:44:41,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 02:44:41,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561605661] [2024-10-24 02:44:41,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:44:41,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 02:44:41,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:41,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 02:44:41,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:44:41,805 INFO L87 Difference]: Start difference. First operand 6175 states and 9135 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:41,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:41,972 INFO L93 Difference]: Finished difference Result 10673 states and 15636 transitions. [2024-10-24 02:44:41,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 02:44:41,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-24 02:44:41,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:41,991 INFO L225 Difference]: With dead ends: 10673 [2024-10-24 02:44:41,992 INFO L226 Difference]: Without dead ends: 9463 [2024-10-24 02:44:41,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-24 02:44:41,997 INFO L432 NwaCegarLoop]: 1566 mSDtfsCounter, 4667 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:41,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3318 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:44:42,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9463 states. [2024-10-24 02:44:42,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9463 to 7383. [2024-10-24 02:44:42,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7383 states, 7381 states have (on average 1.4706679311746376) internal successors, (10855), 7382 states have internal predecessors, (10855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:42,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7383 states to 7383 states and 10855 transitions. [2024-10-24 02:44:42,138 INFO L78 Accepts]: Start accepts. Automaton has 7383 states and 10855 transitions. Word has length 61 [2024-10-24 02:44:42,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:42,138 INFO L471 AbstractCegarLoop]: Abstraction has 7383 states and 10855 transitions. [2024-10-24 02:44:42,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:42,139 INFO L276 IsEmpty]: Start isEmpty. Operand 7383 states and 10855 transitions. [2024-10-24 02:44:42,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 02:44:42,141 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:42,141 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:42,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 02:44:42,141 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:42,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:42,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1913554103, now seen corresponding path program 1 times [2024-10-24 02:44:42,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:42,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941139382] [2024-10-24 02:44:42,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:42,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 02:44:42,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:42,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941139382] [2024-10-24 02:44:42,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941139382] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:44:42,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:44:42,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 02:44:42,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978904322] [2024-10-24 02:44:42,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:44:42,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 02:44:42,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:42,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 02:44:42,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:44:42,234 INFO L87 Difference]: Start difference. First operand 7383 states and 10855 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:42,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:42,463 INFO L93 Difference]: Finished difference Result 11881 states and 17356 transitions. [2024-10-24 02:44:42,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 02:44:42,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-24 02:44:42,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:42,478 INFO L225 Difference]: With dead ends: 11881 [2024-10-24 02:44:42,478 INFO L226 Difference]: Without dead ends: 10671 [2024-10-24 02:44:42,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-24 02:44:42,481 INFO L432 NwaCegarLoop]: 1565 mSDtfsCounter, 4639 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4639 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:42,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4639 Valid, 3339 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:44:42,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10671 states. [2024-10-24 02:44:42,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10671 to 8591. [2024-10-24 02:44:42,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8589 states have (on average 1.4640819653044592) internal successors, (12575), 8590 states have internal predecessors, (12575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:42,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12575 transitions. [2024-10-24 02:44:42,697 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12575 transitions. Word has length 61 [2024-10-24 02:44:42,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:42,698 INFO L471 AbstractCegarLoop]: Abstraction has 8591 states and 12575 transitions. [2024-10-24 02:44:42,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:42,698 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12575 transitions. [2024-10-24 02:44:42,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 02:44:42,699 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:42,699 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:42,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 02:44:42,700 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:42,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:42,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1134695091, now seen corresponding path program 1 times [2024-10-24 02:44:42,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:42,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44566985] [2024-10-24 02:44:42,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:42,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:42,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:42,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44566985] [2024-10-24 02:44:42,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44566985] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:44:42,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:44:42,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:44:42,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88971430] [2024-10-24 02:44:42,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:44:42,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:44:42,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:42,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:44:42,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:44:42,775 INFO L87 Difference]: Start difference. First operand 8591 states and 12575 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:42,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:42,881 INFO L93 Difference]: Finished difference Result 14899 states and 21569 transitions. [2024-10-24 02:44:42,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:44:42,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-24 02:44:42,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:42,892 INFO L225 Difference]: With dead ends: 14899 [2024-10-24 02:44:42,892 INFO L226 Difference]: Without dead ends: 8593 [2024-10-24 02:44:42,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:44:42,899 INFO L432 NwaCegarLoop]: 1545 mSDtfsCounter, 37 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:42,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3053 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:44:42,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8593 states. [2024-10-24 02:44:43,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8593 to 8591. [2024-10-24 02:44:43,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8589 states have (on average 1.4496448946326697) internal successors, (12451), 8590 states have internal predecessors, (12451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12451 transitions. [2024-10-24 02:44:43,023 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12451 transitions. Word has length 62 [2024-10-24 02:44:43,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:43,023 INFO L471 AbstractCegarLoop]: Abstraction has 8591 states and 12451 transitions. [2024-10-24 02:44:43,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:43,024 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12451 transitions. [2024-10-24 02:44:43,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-24 02:44:43,024 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:43,024 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:43,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 02:44:43,025 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:43,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:43,025 INFO L85 PathProgramCache]: Analyzing trace with hash 558947071, now seen corresponding path program 1 times [2024-10-24 02:44:43,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:43,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516316112] [2024-10-24 02:44:43,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:43,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:43,079 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:43,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:43,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516316112] [2024-10-24 02:44:43,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516316112] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:44:43,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:44:43,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:44:43,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397581826] [2024-10-24 02:44:43,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:44:43,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:44:43,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:43,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:44:43,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:44:43,081 INFO L87 Difference]: Start difference. First operand 8591 states and 12451 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:43,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:43,133 INFO L93 Difference]: Finished difference Result 10987 states and 15858 transitions. [2024-10-24 02:44:43,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:44:43,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-24 02:44:43,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:43,140 INFO L225 Difference]: With dead ends: 10987 [2024-10-24 02:44:43,140 INFO L226 Difference]: Without dead ends: 4681 [2024-10-24 02:44:43,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:44:43,146 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 31 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:43,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3050 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:44:43,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2024-10-24 02:44:43,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4674. [2024-10-24 02:44:43,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4674 states, 4672 states have (on average 1.4850171232876712) internal successors, (6938), 4673 states have internal predecessors, (6938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:43,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 6938 transitions. [2024-10-24 02:44:43,205 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 6938 transitions. Word has length 63 [2024-10-24 02:44:43,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:43,205 INFO L471 AbstractCegarLoop]: Abstraction has 4674 states and 6938 transitions. [2024-10-24 02:44:43,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:43,206 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 6938 transitions. [2024-10-24 02:44:43,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 02:44:43,206 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:43,206 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:43,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 02:44:43,207 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:43,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:43,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1485090395, now seen corresponding path program 1 times [2024-10-24 02:44:43,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:43,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478771966] [2024-10-24 02:44:43,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:43,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:43,303 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:43,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:43,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478771966] [2024-10-24 02:44:43,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478771966] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:44:43,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:44:43,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:44:43,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581303476] [2024-10-24 02:44:43,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:44:43,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:44:43,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:43,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:44:43,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:44:43,304 INFO L87 Difference]: Start difference. First operand 4674 states and 6938 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:43,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:43,337 INFO L93 Difference]: Finished difference Result 5866 states and 8612 transitions. [2024-10-24 02:44:43,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:44:43,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-24 02:44:43,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:43,342 INFO L225 Difference]: With dead ends: 5866 [2024-10-24 02:44:43,343 INFO L226 Difference]: Without dead ends: 3488 [2024-10-24 02:44:43,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:44:43,345 INFO L432 NwaCegarLoop]: 1537 mSDtfsCounter, 33 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:43,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3029 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:44:43,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2024-10-24 02:44:43,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 3486. [2024-10-24 02:44:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3484 states have (on average 1.505166475315729) internal successors, (5244), 3485 states have internal predecessors, (5244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:43,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 5244 transitions. [2024-10-24 02:44:43,380 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 5244 transitions. Word has length 64 [2024-10-24 02:44:43,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:43,380 INFO L471 AbstractCegarLoop]: Abstraction has 3486 states and 5244 transitions. [2024-10-24 02:44:43,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:43,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 5244 transitions. [2024-10-24 02:44:43,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 02:44:43,381 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:43,381 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:43,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 02:44:43,381 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:43,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:43,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1800255255, now seen corresponding path program 1 times [2024-10-24 02:44:43,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:43,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763038583] [2024-10-24 02:44:43,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:43,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:43,436 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:43,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:43,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763038583] [2024-10-24 02:44:43,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763038583] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:44:43,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:44:43,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:44:43,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400563485] [2024-10-24 02:44:43,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:44:43,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:44:43,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:43,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:44:43,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:44:43,438 INFO L87 Difference]: Start difference. First operand 3486 states and 5244 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:43,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:43,466 INFO L93 Difference]: Finished difference Result 4084 states and 6071 transitions. [2024-10-24 02:44:43,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:44:43,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 02:44:43,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:43,470 INFO L225 Difference]: With dead ends: 4084 [2024-10-24 02:44:43,471 INFO L226 Difference]: Without dead ends: 2894 [2024-10-24 02:44:43,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:44:43,473 INFO L432 NwaCegarLoop]: 1530 mSDtfsCounter, 30 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:43,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3014 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:44:43,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2024-10-24 02:44:43,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 2892. [2024-10-24 02:44:43,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2890 states have (on average 1.5252595155709343) internal successors, (4408), 2891 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:43,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 4408 transitions. [2024-10-24 02:44:43,502 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 4408 transitions. Word has length 66 [2024-10-24 02:44:43,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:43,502 INFO L471 AbstractCegarLoop]: Abstraction has 2892 states and 4408 transitions. [2024-10-24 02:44:43,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:43,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 4408 transitions. [2024-10-24 02:44:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-24 02:44:43,503 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:43,503 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:43,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 02:44:43,504 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:43,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:43,504 INFO L85 PathProgramCache]: Analyzing trace with hash -200565513, now seen corresponding path program 1 times [2024-10-24 02:44:43,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:43,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424118433] [2024-10-24 02:44:43,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:43,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:43,599 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:44:43,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:43,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424118433] [2024-10-24 02:44:43,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424118433] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:44:43,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860848937] [2024-10-24 02:44:43,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:43,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:44:43,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:44:43,602 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:44:43,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 02:44:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:43,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 02:44:43,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:44:43,781 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:44:43,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:44:44,024 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:44:44,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860848937] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:44:44,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:44:44,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-24 02:44:44,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320375497] [2024-10-24 02:44:44,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:44:44,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:44:44,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:44,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:44:44,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:44:44,026 INFO L87 Difference]: Start difference. First operand 2892 states and 4408 transitions. Second operand has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:44,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:44,108 INFO L93 Difference]: Finished difference Result 4320 states and 6318 transitions. [2024-10-24 02:44:44,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 02:44:44,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-10-24 02:44:44,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:44,114 INFO L225 Difference]: With dead ends: 4320 [2024-10-24 02:44:44,114 INFO L226 Difference]: Without dead ends: 3724 [2024-10-24 02:44:44,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2024-10-24 02:44:44,115 INFO L432 NwaCegarLoop]: 1516 mSDtfsCounter, 4454 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4454 SdHoareTripleChecker+Valid, 3184 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:44,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4454 Valid, 3184 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:44:44,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3724 states. [2024-10-24 02:44:44,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3724 to 3667. [2024-10-24 02:44:44,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3667 states, 3665 states have (on average 1.4679399727148703) internal successors, (5380), 3666 states have internal predecessors, (5380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:44,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3667 states to 3667 states and 5380 transitions. [2024-10-24 02:44:44,161 INFO L78 Accepts]: Start accepts. Automaton has 3667 states and 5380 transitions. Word has length 68 [2024-10-24 02:44:44,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:44,161 INFO L471 AbstractCegarLoop]: Abstraction has 3667 states and 5380 transitions. [2024-10-24 02:44:44,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:44,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3667 states and 5380 transitions. [2024-10-24 02:44:44,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 02:44:44,162 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:44,162 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:44,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 02:44:44,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:44:44,367 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:44,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:44,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1703842709, now seen corresponding path program 1 times [2024-10-24 02:44:44,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:44,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686899060] [2024-10-24 02:44:44,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:44,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:45,620 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:45,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:45,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686899060] [2024-10-24 02:44:45,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686899060] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:44:45,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372414448] [2024-10-24 02:44:45,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:45,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:44:45,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:44:45,623 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:44:45,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 02:44:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:45,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-24 02:44:45,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:44:46,181 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:46,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:44:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:47,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372414448] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:44:47,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:44:47,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 32 [2024-10-24 02:44:47,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739756389] [2024-10-24 02:44:47,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:44:47,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-24 02:44:47,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:47,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-24 02:44:47,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2024-10-24 02:44:47,005 INFO L87 Difference]: Start difference. First operand 3667 states and 5380 transitions. Second operand has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:47,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:47,763 INFO L93 Difference]: Finished difference Result 6307 states and 8834 transitions. [2024-10-24 02:44:47,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-24 02:44:47,764 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-24 02:44:47,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:47,771 INFO L225 Difference]: With dead ends: 6307 [2024-10-24 02:44:47,772 INFO L226 Difference]: Without dead ends: 5063 [2024-10-24 02:44:47,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=473, Invalid=1783, Unknown=0, NotChecked=0, Total=2256 [2024-10-24 02:44:47,774 INFO L432 NwaCegarLoop]: 1496 mSDtfsCounter, 20919 mSDsluCounter, 6265 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20919 SdHoareTripleChecker+Valid, 7761 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:47,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20919 Valid, 7761 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 02:44:47,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5063 states. [2024-10-24 02:44:47,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5063 to 5017. [2024-10-24 02:44:47,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5017 states, 5015 states have (on average 1.4125623130608176) internal successors, (7084), 5016 states have internal predecessors, (7084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:47,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5017 states to 5017 states and 7084 transitions. [2024-10-24 02:44:47,852 INFO L78 Accepts]: Start accepts. Automaton has 5017 states and 7084 transitions. Word has length 69 [2024-10-24 02:44:47,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:47,852 INFO L471 AbstractCegarLoop]: Abstraction has 5017 states and 7084 transitions. [2024-10-24 02:44:47,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:47,853 INFO L276 IsEmpty]: Start isEmpty. Operand 5017 states and 7084 transitions. [2024-10-24 02:44:47,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 02:44:47,853 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:47,854 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:47,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 02:44:48,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-24 02:44:48,055 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:48,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:48,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1884833821, now seen corresponding path program 1 times [2024-10-24 02:44:48,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:48,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269661494] [2024-10-24 02:44:48,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:48,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:49,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:49,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269661494] [2024-10-24 02:44:49,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269661494] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:44:49,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849015342] [2024-10-24 02:44:49,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:49,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:44:49,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:44:49,140 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:44:49,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 02:44:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:49,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 02:44:49,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:44:49,470 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:49,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:44:50,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:50,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849015342] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:44:50,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:44:50,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2024-10-24 02:44:50,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191042586] [2024-10-24 02:44:50,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:44:50,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-24 02:44:50,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:50,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-24 02:44:50,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2024-10-24 02:44:50,118 INFO L87 Difference]: Start difference. First operand 5017 states and 7084 transitions. Second operand has 29 states, 29 states have (on average 6.172413793103448) internal successors, (179), 28 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:51,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:51,097 INFO L93 Difference]: Finished difference Result 15556 states and 20615 transitions. [2024-10-24 02:44:51,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-24 02:44:51,098 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.172413793103448) internal successors, (179), 28 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-24 02:44:51,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:51,110 INFO L225 Difference]: With dead ends: 15556 [2024-10-24 02:44:51,110 INFO L226 Difference]: Without dead ends: 12991 [2024-10-24 02:44:51,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=615, Invalid=2465, Unknown=0, NotChecked=0, Total=3080 [2024-10-24 02:44:51,116 INFO L432 NwaCegarLoop]: 1494 mSDtfsCounter, 21419 mSDsluCounter, 6372 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21419 SdHoareTripleChecker+Valid, 7866 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:51,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21419 Valid, 7866 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 02:44:51,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12991 states. [2024-10-24 02:44:51,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12991 to 12979. [2024-10-24 02:44:51,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12979 states, 12977 states have (on average 1.3218771672959853) internal successors, (17154), 12978 states have internal predecessors, (17154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:51,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12979 states to 12979 states and 17154 transitions. [2024-10-24 02:44:51,414 INFO L78 Accepts]: Start accepts. Automaton has 12979 states and 17154 transitions. Word has length 69 [2024-10-24 02:44:51,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:51,415 INFO L471 AbstractCegarLoop]: Abstraction has 12979 states and 17154 transitions. [2024-10-24 02:44:51,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.172413793103448) internal successors, (179), 28 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:51,415 INFO L276 IsEmpty]: Start isEmpty. Operand 12979 states and 17154 transitions. [2024-10-24 02:44:51,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 02:44:51,417 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:51,417 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:51,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 02:44:51,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:44:51,618 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:51,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:51,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1383295715, now seen corresponding path program 1 times [2024-10-24 02:44:51,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:51,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828100559] [2024-10-24 02:44:51,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:51,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:52,244 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:52,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:52,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828100559] [2024-10-24 02:44:52,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828100559] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:44:52,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534717262] [2024-10-24 02:44:52,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:52,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:44:52,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:44:52,246 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:44:52,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 02:44:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:52,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 02:44:52,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:44:52,579 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:52,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:44:53,011 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:53,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534717262] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:44:53,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:44:53,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 27 [2024-10-24 02:44:53,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020287138] [2024-10-24 02:44:53,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:44:53,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 02:44:53,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:53,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 02:44:53,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2024-10-24 02:44:53,013 INFO L87 Difference]: Start difference. First operand 12979 states and 17154 transitions. Second operand has 28 states, 28 states have (on average 6.607142857142857) internal successors, (185), 27 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:54,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:44:54,319 INFO L93 Difference]: Finished difference Result 34404 states and 44604 transitions. [2024-10-24 02:44:54,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-24 02:44:54,319 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.607142857142857) internal successors, (185), 27 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-24 02:44:54,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:44:54,345 INFO L225 Difference]: With dead ends: 34404 [2024-10-24 02:44:54,345 INFO L226 Difference]: Without dead ends: 25249 [2024-10-24 02:44:54,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=714, Invalid=2708, Unknown=0, NotChecked=0, Total=3422 [2024-10-24 02:44:54,355 INFO L432 NwaCegarLoop]: 1515 mSDtfsCounter, 21528 mSDsluCounter, 6333 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21528 SdHoareTripleChecker+Valid, 7848 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 02:44:54,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21528 Valid, 7848 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 02:44:54,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25249 states. [2024-10-24 02:44:54,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25249 to 24049. [2024-10-24 02:44:54,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24049 states, 24047 states have (on average 1.2825300453278996) internal successors, (30841), 24048 states have internal predecessors, (30841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:54,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24049 states to 24049 states and 30841 transitions. [2024-10-24 02:44:54,961 INFO L78 Accepts]: Start accepts. Automaton has 24049 states and 30841 transitions. Word has length 69 [2024-10-24 02:44:54,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:44:54,961 INFO L471 AbstractCegarLoop]: Abstraction has 24049 states and 30841 transitions. [2024-10-24 02:44:54,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.607142857142857) internal successors, (185), 27 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:44:54,961 INFO L276 IsEmpty]: Start isEmpty. Operand 24049 states and 30841 transitions. [2024-10-24 02:44:54,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 02:44:54,962 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:44:54,962 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:44:54,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 02:44:55,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:44:55,163 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:44:55,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:44:55,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1292347099, now seen corresponding path program 1 times [2024-10-24 02:44:55,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:44:55,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026538191] [2024-10-24 02:44:55,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:55,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:44:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:55,424 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:55,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:44:55,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026538191] [2024-10-24 02:44:55,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026538191] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:44:55,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477936125] [2024-10-24 02:44:55,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:44:55,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:44:55,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:44:55,426 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:44:55,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 02:44:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:44:55,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-24 02:44:55,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:44:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:57,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:44:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:44:59,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477936125] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:44:59,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:44:59,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 21, 21] total 49 [2024-10-24 02:44:59,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812094234] [2024-10-24 02:44:59,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:44:59,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-24 02:44:59,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:44:59,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-24 02:44:59,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=2035, Unknown=0, NotChecked=0, Total=2352 [2024-10-24 02:44:59,629 INFO L87 Difference]: Start difference. First operand 24049 states and 30841 transitions. Second operand has 49 states, 49 states have (on average 4.040816326530612) internal successors, (198), 49 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:45:27,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:45:27,282 INFO L93 Difference]: Finished difference Result 71272 states and 92043 transitions. [2024-10-24 02:45:27,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2024-10-24 02:45:27,283 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.040816326530612) internal successors, (198), 49 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-24 02:45:27,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:45:27,334 INFO L225 Difference]: With dead ends: 71272 [2024-10-24 02:45:27,334 INFO L226 Difference]: Without dead ends: 52676 [2024-10-24 02:45:27,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16715 ImplicationChecksByTransitivity, 25.7s TimeCoverageRelationStatistics Valid=8336, Invalid=34306, Unknown=0, NotChecked=0, Total=42642 [2024-10-24 02:45:27,354 INFO L432 NwaCegarLoop]: 1555 mSDtfsCounter, 31553 mSDsluCounter, 14962 mSDsCounter, 0 mSdLazyCounter, 2735 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31553 SdHoareTripleChecker+Valid, 16517 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-24 02:45:27,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31553 Valid, 16517 Invalid, 2885 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [150 Valid, 2735 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-24 02:45:27,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52676 states. [2024-10-24 02:45:28,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52676 to 21879. [2024-10-24 02:45:28,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21879 states, 21877 states have (on average 1.271929423595557) internal successors, (27826), 21878 states have internal predecessors, (27826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:45:28,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21879 states to 21879 states and 27826 transitions. [2024-10-24 02:45:28,142 INFO L78 Accepts]: Start accepts. Automaton has 21879 states and 27826 transitions. Word has length 70 [2024-10-24 02:45:28,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:45:28,142 INFO L471 AbstractCegarLoop]: Abstraction has 21879 states and 27826 transitions. [2024-10-24 02:45:28,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.040816326530612) internal successors, (198), 49 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:45:28,142 INFO L276 IsEmpty]: Start isEmpty. Operand 21879 states and 27826 transitions. [2024-10-24 02:45:28,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 02:45:28,143 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:45:28,143 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:45:28,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 02:45:28,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-24 02:45:28,349 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:45:28,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:45:28,349 INFO L85 PathProgramCache]: Analyzing trace with hash -993642665, now seen corresponding path program 1 times [2024-10-24 02:45:28,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:45:28,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368399367] [2024-10-24 02:45:28,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:45:28,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:45:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:45:30,266 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:45:30,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:45:30,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368399367] [2024-10-24 02:45:30,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368399367] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:45:30,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779177821] [2024-10-24 02:45:30,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:45:30,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:45:30,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:45:30,268 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:45:30,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 02:45:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:45:30,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-24 02:45:30,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:45:31,517 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:45:31,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:45:33,431 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:45:33,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779177821] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:45:33,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:45:33,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 18, 17] total 58 [2024-10-24 02:45:33,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63127746] [2024-10-24 02:45:33,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:45:33,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-10-24 02:45:33,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:45:33,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-10-24 02:45:33,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=3072, Unknown=0, NotChecked=0, Total=3306 [2024-10-24 02:45:33,433 INFO L87 Difference]: Start difference. First operand 21879 states and 27826 transitions. Second operand has 58 states, 58 states have (on average 3.2586206896551726) internal successors, (189), 58 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)