/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:34:50,907 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:34:50,996 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 11:34:51,028 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:34:51,030 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:34:51,030 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:34:51,031 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:34:51,031 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:34:51,032 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:34:51,037 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:34:51,038 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:34:51,038 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:34:51,038 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:34:51,039 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:34:51,040 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:34:51,040 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:34:51,040 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:34:51,040 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:34:51,040 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:34:51,041 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:34:51,041 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:34:51,041 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:34:51,042 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:34:51,042 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:34:51,042 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:34:51,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:34:51,042 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:34:51,043 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:34:51,043 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:34:51,043 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:34:51,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:34:51,044 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:34:51,044 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:34:51,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:34:51,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:34:51,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:34:51,340 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:34:51,340 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:34:51,341 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i [2023-11-17 11:34:52,612 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:34:52,815 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:34:52,816 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i [2023-11-17 11:34:52,827 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/966448cb6/cceda22fae6f4b5f986862a18b04f037/FLAG36fa2fcfc [2023-11-17 11:34:52,844 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/966448cb6/cceda22fae6f4b5f986862a18b04f037 [2023-11-17 11:34:52,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:34:52,848 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:34:52,849 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:34:52,849 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:34:52,853 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:34:52,854 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:34:52" (1/1) ... [2023-11-17 11:34:52,857 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eb94f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:52, skipping insertion in model container [2023-11-17 11:34:52,857 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:34:52" (1/1) ... [2023-11-17 11:34:52,908 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:34:53,031 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i[1105,1118] [2023-11-17 11:34:53,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:34:53,209 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:34:53,220 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i[1105,1118] [2023-11-17 11:34:53,255 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:34:53,304 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:34:53,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:53 WrapperNode [2023-11-17 11:34:53,305 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:34:53,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:34:53,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:34:53,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:34:53,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:53" (1/1) ... [2023-11-17 11:34:53,334 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:53" (1/1) ... [2023-11-17 11:34:53,354 INFO L138 Inliner]: procedures = 163, calls = 48, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2023-11-17 11:34:53,355 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:34:53,355 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:34:53,355 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:34:53,355 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:34:53,364 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:53" (1/1) ... [2023-11-17 11:34:53,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:53" (1/1) ... [2023-11-17 11:34:53,372 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:53" (1/1) ... [2023-11-17 11:34:53,372 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:53" (1/1) ... [2023-11-17 11:34:53,385 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:53" (1/1) ... [2023-11-17 11:34:53,386 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:53" (1/1) ... [2023-11-17 11:34:53,388 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:53" (1/1) ... [2023-11-17 11:34:53,389 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:53" (1/1) ... [2023-11-17 11:34:53,391 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:34:53,391 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:34:53,392 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:34:53,392 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:34:53,392 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:53" (1/1) ... [2023-11-17 11:34:53,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:34:53,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:34:53,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 11:34:53,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 11:34:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:34:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:34:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 11:34:53,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:34:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:34:53,460 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-17 11:34:53,460 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-17 11:34:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:34:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:34:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 11:34:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:34:53,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:34:53,463 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:34:53,581 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:34:53,583 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:34:53,765 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:34:53,890 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:34:53,890 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:34:53,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:34:53 BoogieIcfgContainer [2023-11-17 11:34:53,891 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:34:53,893 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:34:53,893 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:34:53,896 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:34:53,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:34:52" (1/3) ... [2023-11-17 11:34:53,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ceaa1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:34:53, skipping insertion in model container [2023-11-17 11:34:53,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:34:53" (2/3) ... [2023-11-17 11:34:53,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ceaa1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:34:53, skipping insertion in model container [2023-11-17 11:34:53,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:34:53" (3/3) ... [2023-11-17 11:34:53,899 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_32-traces-mine-vs-oplus-vs-meet_true.i [2023-11-17 11:34:53,914 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:34:53,914 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-17 11:34:53,914 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:34:53,953 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-17 11:34:53,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 49 transitions, 105 flow [2023-11-17 11:34:54,032 INFO L124 PetriNetUnfolderBase]: 2/48 cut-off events. [2023-11-17 11:34:54,033 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:34:54,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 48 events. 2/48 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2023-11-17 11:34:54,036 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 49 transitions, 105 flow [2023-11-17 11:34:54,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 39 transitions, 81 flow [2023-11-17 11:34:54,044 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:34:54,063 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 39 transitions, 81 flow [2023-11-17 11:34:54,065 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 39 transitions, 81 flow [2023-11-17 11:34:54,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 39 transitions, 81 flow [2023-11-17 11:34:54,087 INFO L124 PetriNetUnfolderBase]: 1/39 cut-off events. [2023-11-17 11:34:54,087 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:34:54,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 39 events. 1/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-11-17 11:34:54,089 INFO L119 LiptonReduction]: Number of co-enabled transitions 680 [2023-11-17 11:34:54,837 INFO L134 LiptonReduction]: Checked pairs total: 3656 [2023-11-17 11:34:54,838 INFO L136 LiptonReduction]: Total number of compositions: 28 [2023-11-17 11:34:54,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:34:54,866 INFO L357 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, mHoare=false, 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;@58133d33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:34:54,866 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 11:34:54,870 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:34:54,870 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-17 11:34:54,871 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:34:54,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:34:54,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-17 11:34:54,872 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:34:54,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:34:54,876 INFO L85 PathProgramCache]: Analyzing trace with hash 304656, now seen corresponding path program 1 times [2023-11-17 11:34:54,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:34:54,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805535665] [2023-11-17 11:34:54,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:34:54,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:34:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:34:55,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:34:55,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:34:55,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805535665] [2023-11-17 11:34:55,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805535665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:34:55,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:34:55,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:34:55,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429059225] [2023-11-17 11:34:55,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:34:55,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-17 11:34:55,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:34:55,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-17 11:34:55,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-17 11:34:55,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 77 [2023-11-17 11:34:55,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 47 flow. Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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) [2023-11-17 11:34:55,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:34:55,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 77 [2023-11-17 11:34:55,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:34:55,223 INFO L124 PetriNetUnfolderBase]: 90/201 cut-off events. [2023-11-17 11:34:55,223 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:34:55,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 201 events. 90/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 617 event pairs, 90 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 398. Up to 202 conditions per place. [2023-11-17 11:34:55,227 INFO L140 encePairwiseOnDemand]: 76/77 looper letters, 21 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-11-17 11:34:55,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 21 transitions, 87 flow [2023-11-17 11:34:55,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 11:34:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-17 11:34:55,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 58 transitions. [2023-11-17 11:34:55,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37662337662337664 [2023-11-17 11:34:55,240 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 58 transitions. [2023-11-17 11:34:55,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 58 transitions. [2023-11-17 11:34:55,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:34:55,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 58 transitions. [2023-11-17 11:34:55,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 29.0) internal successors, (58), 2 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) [2023-11-17 11:34:55,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2023-11-17 11:34:55,252 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2023-11-17 11:34:55,254 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 47 flow. Second operand 2 states and 58 transitions. [2023-11-17 11:34:55,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 21 transitions, 87 flow [2023-11-17 11:34:55,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 86 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:34:55,258 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 44 flow [2023-11-17 11:34:55,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2023-11-17 11:34:55,263 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2023-11-17 11:34:55,264 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 44 flow [2023-11-17 11:34:55,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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) [2023-11-17 11:34:55,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:34:55,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-17 11:34:55,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:34:55,265 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:34:55,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:34:55,266 INFO L85 PathProgramCache]: Analyzing trace with hash 292769028, now seen corresponding path program 1 times [2023-11-17 11:34:55,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:34:55,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394500676] [2023-11-17 11:34:55,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:34:55,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:34:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:34:55,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:34:55,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:34:55,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394500676] [2023-11-17 11:34:55,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394500676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:34:55,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:34:55,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:34:55,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501294976] [2023-11-17 11:34:55,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:34:55,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:34:55,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:34:55,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:34:55,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:34:55,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 77 [2023-11-17 11:34:55,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) 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) [2023-11-17 11:34:55,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:34:55,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 77 [2023-11-17 11:34:55,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:34:55,556 INFO L124 PetriNetUnfolderBase]: 86/204 cut-off events. [2023-11-17 11:34:55,556 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:34:55,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 204 events. 86/204 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 706 event pairs, 53 based on Foata normal form. 11/212 useless extension candidates. Maximal degree in co-relation 410. Up to 152 conditions per place. [2023-11-17 11:34:55,559 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 24 selfloop transitions, 3 changer transitions 4/31 dead transitions. [2023-11-17 11:34:55,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 31 transitions, 126 flow [2023-11-17 11:34:55,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:34:55,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:34:55,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2023-11-17 11:34:55,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37662337662337664 [2023-11-17 11:34:55,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 87 transitions. [2023-11-17 11:34:55,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 87 transitions. [2023-11-17 11:34:55,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:34:55,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 87 transitions. [2023-11-17 11:34:55,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2023-11-17 11:34:55,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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) [2023-11-17 11:34:55,568 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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) [2023-11-17 11:34:55,568 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 44 flow. Second operand 3 states and 87 transitions. [2023-11-17 11:34:55,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 31 transitions, 126 flow [2023-11-17 11:34:55,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:34:55,569 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 62 flow [2023-11-17 11:34:55,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2023-11-17 11:34:55,570 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-11-17 11:34:55,570 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 62 flow [2023-11-17 11:34:55,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) 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) [2023-11-17 11:34:55,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:34:55,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:34:55,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:34:55,571 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:34:55,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:34:55,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1712540017, now seen corresponding path program 1 times [2023-11-17 11:34:55,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:34:55,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677992712] [2023-11-17 11:34:55,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:34:55,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:34:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:34:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:34:55,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:34:55,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677992712] [2023-11-17 11:34:55,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677992712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:34:55,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:34:55,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:34:55,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325674714] [2023-11-17 11:34:55,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:34:55,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:34:55,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:34:55,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:34:55,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:34:55,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 77 [2023-11-17 11:34:55,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 62 flow. 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) [2023-11-17 11:34:55,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:34:55,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 77 [2023-11-17 11:34:55,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:34:55,763 INFO L124 PetriNetUnfolderBase]: 69/179 cut-off events. [2023-11-17 11:34:55,764 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-17 11:34:55,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418 conditions, 179 events. 69/179 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 627 event pairs, 33 based on Foata normal form. 5/184 useless extension candidates. Maximal degree in co-relation 413. Up to 130 conditions per place. [2023-11-17 11:34:55,767 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 27 selfloop transitions, 6 changer transitions 4/37 dead transitions. [2023-11-17 11:34:55,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 37 transitions, 180 flow [2023-11-17 11:34:55,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:34:55,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:34:55,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2023-11-17 11:34:55,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2023-11-17 11:34:55,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 93 transitions. [2023-11-17 11:34:55,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 93 transitions. [2023-11-17 11:34:55,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:34:55,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 93 transitions. [2023-11-17 11:34:55,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2023-11-17 11:34:55,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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) [2023-11-17 11:34:55,772 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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) [2023-11-17 11:34:55,772 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 62 flow. Second operand 3 states and 93 transitions. [2023-11-17 11:34:55,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 37 transitions, 180 flow [2023-11-17 11:34:55,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 37 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:34:55,774 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 90 flow [2023-11-17 11:34:55,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-11-17 11:34:55,775 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2023-11-17 11:34:55,776 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 90 flow [2023-11-17 11:34:55,776 INFO L496 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) [2023-11-17 11:34:55,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:34:55,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:34:55,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:34:55,776 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:34:55,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:34:55,777 INFO L85 PathProgramCache]: Analyzing trace with hash 799487819, now seen corresponding path program 1 times [2023-11-17 11:34:55,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:34:55,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121897716] [2023-11-17 11:34:55,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:34:55,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:34:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:34:55,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:34:55,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:34:55,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121897716] [2023-11-17 11:34:55,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121897716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:34:55,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:34:55,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:34:55,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023694486] [2023-11-17 11:34:55,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:34:55,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:34:55,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:34:55,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:34:55,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:34:55,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 77 [2023-11-17 11:34:55,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 90 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2023-11-17 11:34:55,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:34:55,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 77 [2023-11-17 11:34:55,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:34:56,011 INFO L124 PetriNetUnfolderBase]: 31/105 cut-off events. [2023-11-17 11:34:56,011 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-17 11:34:56,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 105 events. 31/105 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 313 event pairs, 10 based on Foata normal form. 19/124 useless extension candidates. Maximal degree in co-relation 280. Up to 69 conditions per place. [2023-11-17 11:34:56,012 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 13 selfloop transitions, 8 changer transitions 7/28 dead transitions. [2023-11-17 11:34:56,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 28 transitions, 158 flow [2023-11-17 11:34:56,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:34:56,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:34:56,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2023-11-17 11:34:56,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33116883116883117 [2023-11-17 11:34:56,013 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 102 transitions. [2023-11-17 11:34:56,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 102 transitions. [2023-11-17 11:34:56,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:34:56,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 102 transitions. [2023-11-17 11:34:56,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2023-11-17 11:34:56,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 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) [2023-11-17 11:34:56,015 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 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) [2023-11-17 11:34:56,015 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 90 flow. Second operand 4 states and 102 transitions. [2023-11-17 11:34:56,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 28 transitions, 158 flow [2023-11-17 11:34:56,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 28 transitions, 150 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 11:34:56,017 INFO L231 Difference]: Finished difference. Result has 32 places, 18 transitions, 78 flow [2023-11-17 11:34:56,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=32, PETRI_TRANSITIONS=18} [2023-11-17 11:34:56,018 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2023-11-17 11:34:56,018 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 18 transitions, 78 flow [2023-11-17 11:34:56,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2023-11-17 11:34:56,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:34:56,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:34:56,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:34:56,019 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:34:56,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:34:56,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1569050095, now seen corresponding path program 2 times [2023-11-17 11:34:56,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:34:56,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204521445] [2023-11-17 11:34:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:34:56,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:34:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:34:56,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:34:56,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:34:56,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204521445] [2023-11-17 11:34:56,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204521445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:34:56,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:34:56,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:34:56,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291319043] [2023-11-17 11:34:56,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:34:56,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:34:56,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:34:56,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:34:56,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:34:56,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 77 [2023-11-17 11:34:56,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 18 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2023-11-17 11:34:56,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:34:56,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 77 [2023-11-17 11:34:56,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:34:56,188 INFO L124 PetriNetUnfolderBase]: 17/59 cut-off events. [2023-11-17 11:34:56,188 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-17 11:34:56,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 59 events. 17/59 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 142 event pairs, 7 based on Foata normal form. 1/60 useless extension candidates. Maximal degree in co-relation 170. Up to 41 conditions per place. [2023-11-17 11:34:56,189 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 15 selfloop transitions, 4 changer transitions 2/21 dead transitions. [2023-11-17 11:34:56,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 128 flow [2023-11-17 11:34:56,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:34:56,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:34:56,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2023-11-17 11:34:56,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30194805194805197 [2023-11-17 11:34:56,190 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 93 transitions. [2023-11-17 11:34:56,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 93 transitions. [2023-11-17 11:34:56,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:34:56,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 93 transitions. [2023-11-17 11:34:56,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2023-11-17 11:34:56,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 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) [2023-11-17 11:34:56,192 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 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) [2023-11-17 11:34:56,192 INFO L175 Difference]: Start difference. First operand has 32 places, 18 transitions, 78 flow. Second operand 4 states and 93 transitions. [2023-11-17 11:34:56,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 128 flow [2023-11-17 11:34:56,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 21 transitions, 114 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-17 11:34:56,194 INFO L231 Difference]: Finished difference. Result has 26 places, 17 transitions, 70 flow [2023-11-17 11:34:56,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=26, PETRI_TRANSITIONS=17} [2023-11-17 11:34:56,195 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2023-11-17 11:34:56,195 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 17 transitions, 70 flow [2023-11-17 11:34:56,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2023-11-17 11:34:56,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:34:56,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:34:56,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:34:56,196 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:34:56,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:34:56,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1628266460, now seen corresponding path program 1 times [2023-11-17 11:34:56,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:34:56,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904525883] [2023-11-17 11:34:56,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:34:56,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:34:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:34:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:34:56,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:34:56,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904525883] [2023-11-17 11:34:56,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904525883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:34:56,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:34:56,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:34:56,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484676572] [2023-11-17 11:34:56,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:34:56,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:34:56,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:34:56,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:34:56,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:34:56,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 77 [2023-11-17 11:34:56,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2023-11-17 11:34:56,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:34:56,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 77 [2023-11-17 11:34:56,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:34:56,453 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2023-11-17 11:34:56,453 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-17 11:34:56,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 36 events. 7/36 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 10/46 useless extension candidates. Maximal degree in co-relation 107. Up to 29 conditions per place. [2023-11-17 11:34:56,454 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2023-11-17 11:34:56,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 21 transitions, 130 flow [2023-11-17 11:34:56,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:34:56,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:34:56,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2023-11-17 11:34:56,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30194805194805197 [2023-11-17 11:34:56,457 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 93 transitions. [2023-11-17 11:34:56,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 93 transitions. [2023-11-17 11:34:56,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:34:56,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 93 transitions. [2023-11-17 11:34:56,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2023-11-17 11:34:56,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 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) [2023-11-17 11:34:56,460 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 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) [2023-11-17 11:34:56,460 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 70 flow. Second operand 4 states and 93 transitions. [2023-11-17 11:34:56,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 21 transitions, 130 flow [2023-11-17 11:34:56,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 122 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:34:56,462 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2023-11-17 11:34:56,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2023-11-17 11:34:56,464 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2023-11-17 11:34:56,464 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2023-11-17 11:34:56,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2023-11-17 11:34:56,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 11:34:56,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-17 11:34:56,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 11:34:56,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:34:56,467 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-11-17 11:34:56,470 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:34:56,470 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:34:56,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:34:56 BasicIcfg [2023-11-17 11:34:56,473 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:34:56,475 INFO L158 Benchmark]: Toolchain (without parser) took 3625.01ms. Allocated memory was 324.0MB in the beginning and 389.0MB in the end (delta: 65.0MB). Free memory was 268.0MB in the beginning and 325.6MB in the end (delta: -57.6MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. [2023-11-17 11:34:56,477 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 190.8MB. Free memory is still 139.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:34:56,478 INFO L158 Benchmark]: CACSL2BoogieTranslator took 456.12ms. Allocated memory is still 324.0MB. Free memory was 268.0MB in the beginning and 248.1MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 11:34:56,478 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.59ms. Allocated memory is still 324.0MB. Free memory was 248.1MB in the beginning and 246.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:34:56,478 INFO L158 Benchmark]: Boogie Preprocessor took 35.57ms. Allocated memory is still 324.0MB. Free memory was 246.0MB in the beginning and 245.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 11:34:56,478 INFO L158 Benchmark]: RCFGBuilder took 500.07ms. Allocated memory is still 324.0MB. Free memory was 244.4MB in the beginning and 216.1MB in the end (delta: 28.3MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2023-11-17 11:34:56,479 INFO L158 Benchmark]: TraceAbstraction took 2579.44ms. Allocated memory was 324.0MB in the beginning and 389.0MB in the end (delta: 65.0MB). Free memory was 215.1MB in the beginning and 325.6MB in the end (delta: -110.5MB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:34:56,480 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 190.8MB. Free memory is still 139.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 456.12ms. Allocated memory is still 324.0MB. Free memory was 268.0MB in the beginning and 248.1MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.59ms. Allocated memory is still 324.0MB. Free memory was 248.1MB in the beginning and 246.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.57ms. Allocated memory is still 324.0MB. Free memory was 246.0MB in the beginning and 245.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 500.07ms. Allocated memory is still 324.0MB. Free memory was 244.4MB in the beginning and 216.1MB in the end (delta: 28.3MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * TraceAbstraction took 2579.44ms. Allocated memory was 324.0MB in the beginning and 389.0MB in the end (delta: 65.0MB). Free memory was 215.1MB in the beginning and 325.6MB in the end (delta: -110.5MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8s, 42 PlacesBefore, 25 PlacesAfterwards, 39 TransitionsBefore, 22 TransitionsAfterwards, 680 CoEnabledTransitionPairs, 9 FixpointIterations, 0 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 28 TotalNumberOfCompositions, 3656 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1305, independent: 1004, independent conditional: 0, independent unconditional: 1004, dependent: 301, dependent conditional: 0, dependent unconditional: 301, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 514, independent: 459, independent conditional: 0, independent unconditional: 459, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 514, independent: 382, independent conditional: 0, independent unconditional: 382, dependent: 132, dependent conditional: 0, dependent unconditional: 132, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 132, independent: 77, independent conditional: 0, independent unconditional: 77, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 289, independent: 104, independent conditional: 0, independent unconditional: 104, dependent: 186, dependent conditional: 0, dependent unconditional: 186, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1305, independent: 545, independent conditional: 0, independent unconditional: 545, dependent: 246, dependent conditional: 0, dependent unconditional: 246, unknown: 514, unknown conditional: 0, unknown unconditional: 514] , Statistics on independence cache: Total cache size (in pairs): 114, Positive cache size: 80, Positive conditional cache size: 0, Positive unconditional cache size: 80, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 67 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 68 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 68 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 217 IncrementalHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 0 mSDtfsCounter, 217 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=3, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 262 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 11:34:56,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...