/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 14:57:36,663 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 14:57:36,726 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-NoLbe.epf [2023-12-09 14:57:36,769 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 14:57:36,770 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 14:57:36,770 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 14:57:36,770 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 14:57:36,771 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 14:57:36,771 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 14:57:36,774 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 14:57:36,774 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 14:57:36,775 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 14:57:36,775 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 14:57:36,776 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 14:57:36,776 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 14:57:36,776 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 14:57:36,776 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 14:57:36,776 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 14:57:36,776 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 14:57:36,777 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 14:57:36,777 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 14:57:36,777 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 14:57:36,778 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 14:57:36,778 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 14:57:36,778 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 14:57:36,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:57:36,779 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 14:57:36,779 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 14:57:36,779 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 14:57:36,779 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 14:57:36,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 14:57:36,780 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 14:57:36,780 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 14:57:36,780 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 14:57:36,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 14:57:36,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 14:57:36,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 14:57:36,986 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 14:57:36,990 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 14:57:36,991 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-12-09 14:57:38,037 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 14:57:38,256 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 14:57:38,257 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-12-09 14:57:38,271 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b98fd32c/2f39d05dcc614c4c90fcbffb7fad358c/FLAG80ce84a5d [2023-12-09 14:57:38,292 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b98fd32c/2f39d05dcc614c4c90fcbffb7fad358c [2023-12-09 14:57:38,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 14:57:38,294 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 14:57:38,295 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 14:57:38,295 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 14:57:38,299 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 14:57:38,299 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:57:38" (1/1) ... [2023-12-09 14:57:38,301 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79a43267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:38, skipping insertion in model container [2023-12-09 14:57:38,301 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:57:38" (1/1) ... [2023-12-09 14:57:38,348 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 14:57:38,473 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i[947,960] [2023-12-09 14:57:38,677 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:57:38,693 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 14:57:38,705 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i[947,960] [2023-12-09 14:57:38,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:57:38,789 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:57:38,790 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:57:38,795 INFO L206 MainTranslator]: Completed translation [2023-12-09 14:57:38,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:38 WrapperNode [2023-12-09 14:57:38,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 14:57:38,797 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 14:57:38,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 14:57:38,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 14:57:38,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:38" (1/1) ... [2023-12-09 14:57:38,830 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:38" (1/1) ... [2023-12-09 14:57:38,852 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 172 [2023-12-09 14:57:38,853 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 14:57:38,853 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 14:57:38,853 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 14:57:38,853 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 14:57:38,874 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:38" (1/1) ... [2023-12-09 14:57:38,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:38" (1/1) ... [2023-12-09 14:57:38,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:38" (1/1) ... [2023-12-09 14:57:38,884 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:38" (1/1) ... [2023-12-09 14:57:38,892 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:38" (1/1) ... [2023-12-09 14:57:38,893 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:38" (1/1) ... [2023-12-09 14:57:38,895 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:38" (1/1) ... [2023-12-09 14:57:38,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:38" (1/1) ... [2023-12-09 14:57:38,938 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 14:57:38,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 14:57:38,939 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 14:57:38,939 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 14:57:38,939 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:38" (1/1) ... [2023-12-09 14:57:38,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:57:38,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:57:38,978 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) [2023-12-09 14:57:38,999 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 [2023-12-09 14:57:39,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 14:57:39,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 14:57:39,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 14:57:39,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 14:57:39,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 14:57:39,007 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-09 14:57:39,007 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-09 14:57:39,007 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-09 14:57:39,007 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-09 14:57:39,007 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-09 14:57:39,008 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-09 14:57:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 14:57:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 14:57:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 14:57:39,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 14:57:39,009 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 14:57:39,141 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 14:57:39,143 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 14:57:39,495 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 14:57:39,648 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 14:57:39,648 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-09 14:57:39,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:57:39 BoogieIcfgContainer [2023-12-09 14:57:39,649 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 14:57:39,651 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 14:57:39,651 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 14:57:39,653 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 14:57:39,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:57:38" (1/3) ... [2023-12-09 14:57:39,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fff320b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:57:39, skipping insertion in model container [2023-12-09 14:57:39,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:57:38" (2/3) ... [2023-12-09 14:57:39,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fff320b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:57:39, skipping insertion in model container [2023-12-09 14:57:39,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:57:39" (3/3) ... [2023-12-09 14:57:39,655 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2023-12-09 14:57:39,667 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 14:57:39,667 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-09 14:57:39,683 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 14:57:39,726 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:57:39,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 115 transitions, 242 flow [2023-12-09 14:57:39,811 INFO L124 PetriNetUnfolderBase]: 2/112 cut-off events. [2023-12-09 14:57:39,811 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:57:39,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 112 events. 2/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2023-12-09 14:57:39,815 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 115 transitions, 242 flow [2023-12-09 14:57:39,819 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 112 transitions, 233 flow [2023-12-09 14:57:39,828 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:57:39,833 INFO L362 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=true, 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;@d1ef65d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:57:39,833 INFO L363 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-09 14:57:39,844 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:57:39,844 INFO L124 PetriNetUnfolderBase]: 0/73 cut-off events. [2023-12-09 14:57:39,844 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:57:39,844 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:57:39,845 INFO L233 CegarLoopForPetriNet]: 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] [2023-12-09 14:57:39,845 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-09 14:57:39,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:57:39,849 INFO L85 PathProgramCache]: Analyzing trace with hash -914477327, now seen corresponding path program 1 times [2023-12-09 14:57:39,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:57:39,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703529090] [2023-12-09 14:57:39,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:57:39,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:57:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:57:40,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:57:40,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:57:40,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703529090] [2023-12-09 14:57:40,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703529090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:57:40,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:57:40,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-09 14:57:40,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775187791] [2023-12-09 14:57:40,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:57:40,318 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 14:57:40,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:57:40,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 14:57:40,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 14:57:40,339 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2023-12-09 14:57:40,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 112 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2023-12-09 14:57:40,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:57:40,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2023-12-09 14:57:40,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:57:40,614 INFO L124 PetriNetUnfolderBase]: 359/991 cut-off events. [2023-12-09 14:57:40,615 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-12-09 14:57:40,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1583 conditions, 991 events. 359/991 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6125 event pairs, 59 based on Foata normal form. 76/1012 useless extension candidates. Maximal degree in co-relation 1534. Up to 445 conditions per place. [2023-12-09 14:57:40,628 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 20 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2023-12-09 14:57:40,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 115 transitions, 283 flow [2023-12-09 14:57:40,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 14:57:40,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 14:57:40,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2023-12-09 14:57:40,645 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9130434782608695 [2023-12-09 14:57:40,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2023-12-09 14:57:40,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2023-12-09 14:57:40,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:57:40,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2023-12-09 14:57:40,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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) [2023-12-09 14:57:40,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2023-12-09 14:57:40,657 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2023-12-09 14:57:40,661 INFO L308 CegarLoopForPetriNet]: 120 programPoint places, 0 predicate places. [2023-12-09 14:57:40,662 INFO L500 AbstractCegarLoop]: Abstraction has has 120 places, 115 transitions, 283 flow [2023-12-09 14:57:40,662 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2023-12-09 14:57:40,662 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:57:40,663 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:57:40,663 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 14:57:40,663 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-09 14:57:40,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:57:40,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1418303027, now seen corresponding path program 1 times [2023-12-09 14:57:40,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:57:40,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116921692] [2023-12-09 14:57:40,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:57:40,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:57:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:57:41,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:57:41,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:57:41,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116921692] [2023-12-09 14:57:41,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116921692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:57:41,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:57:41,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:57:41,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532922454] [2023-12-09 14:57:41,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:57:41,019 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 14:57:41,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:57:41,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 14:57:41,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:57:41,021 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 115 [2023-12-09 14:57:41,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 115 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 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) [2023-12-09 14:57:41,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:57:41,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 115 [2023-12-09 14:57:41,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:57:41,779 INFO L124 PetriNetUnfolderBase]: 1501/3309 cut-off events. [2023-12-09 14:57:41,779 INFO L125 PetriNetUnfolderBase]: For 926/2234 co-relation queries the response was YES. [2023-12-09 14:57:41,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7318 conditions, 3309 events. 1501/3309 cut-off events. For 926/2234 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 24868 event pairs, 138 based on Foata normal form. 1/3244 useless extension candidates. Maximal degree in co-relation 7265. Up to 1509 conditions per place. [2023-12-09 14:57:41,794 INFO L140 encePairwiseOnDemand]: 107/115 looper letters, 30 selfloop transitions, 2 changer transitions 84/191 dead transitions. [2023-12-09 14:57:41,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 191 transitions, 775 flow [2023-12-09 14:57:41,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 14:57:41,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 14:57:41,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 878 transitions. [2023-12-09 14:57:41,797 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8483091787439614 [2023-12-09 14:57:41,797 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 878 transitions. [2023-12-09 14:57:41,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 878 transitions. [2023-12-09 14:57:41,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:57:41,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 878 transitions. [2023-12-09 14:57:41,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.55555555555556) internal successors, (878), 9 states have internal predecessors, (878), 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) [2023-12-09 14:57:41,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 115.0) internal successors, (1150), 10 states have internal predecessors, (1150), 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) [2023-12-09 14:57:41,803 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 115.0) internal successors, (1150), 10 states have internal predecessors, (1150), 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) [2023-12-09 14:57:41,804 INFO L308 CegarLoopForPetriNet]: 120 programPoint places, 8 predicate places. [2023-12-09 14:57:41,804 INFO L500 AbstractCegarLoop]: Abstraction has has 128 places, 191 transitions, 775 flow [2023-12-09 14:57:41,805 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 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) [2023-12-09 14:57:41,805 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:57:41,805 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:57:41,805 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 14:57:41,805 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-09 14:57:41,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:57:41,806 INFO L85 PathProgramCache]: Analyzing trace with hash 221726320, now seen corresponding path program 1 times [2023-12-09 14:57:41,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:57:41,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530638482] [2023-12-09 14:57:41,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:57:41,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:57:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:57:42,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:57:42,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:57:42,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530638482] [2023-12-09 14:57:42,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530638482] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:57:42,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:57:42,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-09 14:57:42,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359714631] [2023-12-09 14:57:42,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:57:42,552 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-09 14:57:42,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:57:42,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-09 14:57:42,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-09 14:57:42,557 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 115 [2023-12-09 14:57:42,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 191 transitions, 775 flow. Second operand has 8 states, 8 states have (on average 86.125) internal successors, (689), 8 states have internal predecessors, (689), 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) [2023-12-09 14:57:42,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:57:42,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 115 [2023-12-09 14:57:42,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:57:44,013 INFO L124 PetriNetUnfolderBase]: 4932/9605 cut-off events. [2023-12-09 14:57:44,013 INFO L125 PetriNetUnfolderBase]: For 2855/17343 co-relation queries the response was YES. [2023-12-09 14:57:44,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28499 conditions, 9605 events. 4932/9605 cut-off events. For 2855/17343 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 76824 event pairs, 293 based on Foata normal form. 3/9492 useless extension candidates. Maximal degree in co-relation 28439. Up to 4678 conditions per place. [2023-12-09 14:57:44,047 INFO L140 encePairwiseOnDemand]: 99/115 looper letters, 39 selfloop transitions, 20 changer transitions 309/439 dead transitions. [2023-12-09 14:57:44,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 439 transitions, 2839 flow [2023-12-09 14:57:44,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 14:57:44,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 14:57:44,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 960 transitions. [2023-12-09 14:57:44,049 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8347826086956521 [2023-12-09 14:57:44,049 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 960 transitions. [2023-12-09 14:57:44,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 960 transitions. [2023-12-09 14:57:44,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:57:44,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 960 transitions. [2023-12-09 14:57:44,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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) [2023-12-09 14:57:44,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 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) [2023-12-09 14:57:44,054 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 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) [2023-12-09 14:57:44,054 INFO L308 CegarLoopForPetriNet]: 120 programPoint places, 17 predicate places. [2023-12-09 14:57:44,055 INFO L500 AbstractCegarLoop]: Abstraction has has 137 places, 439 transitions, 2839 flow [2023-12-09 14:57:44,055 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 86.125) internal successors, (689), 8 states have internal predecessors, (689), 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) [2023-12-09 14:57:44,055 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:57:44,055 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:57:44,056 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 14:57:44,056 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-09 14:57:44,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:57:44,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2110677770, now seen corresponding path program 2 times [2023-12-09 14:57:44,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:57:44,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642777975] [2023-12-09 14:57:44,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:57:44,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:57:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:57:45,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:57:45,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:57:45,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642777975] [2023-12-09 14:57:45,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642777975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:57:45,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:57:45,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-09 14:57:45,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693007709] [2023-12-09 14:57:45,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:57:45,049 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 14:57:45,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:57:45,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 14:57:45,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-09 14:57:45,050 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 115 [2023-12-09 14:57:45,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 439 transitions, 2839 flow. Second operand has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2023-12-09 14:57:45,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:57:45,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 115 [2023-12-09 14:57:45,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:57:47,131 INFO L124 PetriNetUnfolderBase]: 6845/13557 cut-off events. [2023-12-09 14:57:47,132 INFO L125 PetriNetUnfolderBase]: For 4636/31424 co-relation queries the response was YES. [2023-12-09 14:57:47,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49836 conditions, 13557 events. 6845/13557 cut-off events. For 4636/31424 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 118927 event pairs, 104 based on Foata normal form. 18/13460 useless extension candidates. Maximal degree in co-relation 49766. Up to 6555 conditions per place. [2023-12-09 14:57:47,187 INFO L140 encePairwiseOnDemand]: 98/115 looper letters, 48 selfloop transitions, 35 changer transitions 468/619 dead transitions. [2023-12-09 14:57:47,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 619 transitions, 5241 flow [2023-12-09 14:57:47,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-09 14:57:47,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-12-09 14:57:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1109 transitions. [2023-12-09 14:57:47,191 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.803623188405797 [2023-12-09 14:57:47,191 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1109 transitions. [2023-12-09 14:57:47,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1109 transitions. [2023-12-09 14:57:47,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:57:47,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1109 transitions. [2023-12-09 14:57:47,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 92.41666666666667) internal successors, (1109), 12 states have internal predecessors, (1109), 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) [2023-12-09 14:57:47,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 115.0) internal successors, (1495), 13 states have internal predecessors, (1495), 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) [2023-12-09 14:57:47,196 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 115.0) internal successors, (1495), 13 states have internal predecessors, (1495), 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) [2023-12-09 14:57:47,197 INFO L308 CegarLoopForPetriNet]: 120 programPoint places, 28 predicate places. [2023-12-09 14:57:47,198 INFO L500 AbstractCegarLoop]: Abstraction has has 148 places, 619 transitions, 5241 flow [2023-12-09 14:57:47,198 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2023-12-09 14:57:47,198 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:57:47,199 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:57:47,199 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 14:57:47,199 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-09 14:57:47,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:57:47,199 INFO L85 PathProgramCache]: Analyzing trace with hash -80587397, now seen corresponding path program 1 times [2023-12-09 14:57:47,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:57:47,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302999019] [2023-12-09 14:57:47,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:57:47,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:57:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:57:48,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:57:48,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:57:48,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302999019] [2023-12-09 14:57:48,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302999019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:57:48,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:57:48,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-09 14:57:48,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685090435] [2023-12-09 14:57:48,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:57:48,543 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 14:57:48,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:57:48,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 14:57:48,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-09 14:57:48,546 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 115 [2023-12-09 14:57:48,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 619 transitions, 5241 flow. Second operand has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2023-12-09 14:57:48,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:57:48,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 115 [2023-12-09 14:57:48,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:57:51,271 INFO L124 PetriNetUnfolderBase]: 7612/15681 cut-off events. [2023-12-09 14:57:51,272 INFO L125 PetriNetUnfolderBase]: For 5731/31195 co-relation queries the response was YES. [2023-12-09 14:57:51,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67996 conditions, 15681 events. 7612/15681 cut-off events. For 5731/31195 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 145930 event pairs, 116 based on Foata normal form. 17/15580 useless extension candidates. Maximal degree in co-relation 67915. Up to 7347 conditions per place. [2023-12-09 14:57:51,347 INFO L140 encePairwiseOnDemand]: 96/115 looper letters, 62 selfloop transitions, 29 changer transitions 583/741 dead transitions. [2023-12-09 14:57:51,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 741 transitions, 7689 flow [2023-12-09 14:57:51,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 14:57:51,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 14:57:51,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1178 transitions. [2023-12-09 14:57:51,352 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7879598662207358 [2023-12-09 14:57:51,353 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1178 transitions. [2023-12-09 14:57:51,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1178 transitions. [2023-12-09 14:57:51,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:57:51,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1178 transitions. [2023-12-09 14:57:51,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 90.61538461538461) internal successors, (1178), 13 states have internal predecessors, (1178), 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) [2023-12-09 14:57:51,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 115.0) internal successors, (1610), 14 states have internal predecessors, (1610), 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) [2023-12-09 14:57:51,357 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 115.0) internal successors, (1610), 14 states have internal predecessors, (1610), 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) [2023-12-09 14:57:51,358 INFO L308 CegarLoopForPetriNet]: 120 programPoint places, 40 predicate places. [2023-12-09 14:57:51,358 INFO L500 AbstractCegarLoop]: Abstraction has has 160 places, 741 transitions, 7689 flow [2023-12-09 14:57:51,358 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2023-12-09 14:57:51,358 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:57:51,358 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:57:51,358 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 14:57:51,359 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-09 14:57:51,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:57:51,359 INFO L85 PathProgramCache]: Analyzing trace with hash 549748793, now seen corresponding path program 2 times [2023-12-09 14:57:51,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:57:51,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012037133] [2023-12-09 14:57:51,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:57:51,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:57:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:57:52,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:57:52,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:57:52,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012037133] [2023-12-09 14:57:52,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012037133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:57:52,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:57:52,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-09 14:57:52,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875479217] [2023-12-09 14:57:52,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:57:52,778 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-09 14:57:52,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:57:52,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-09 14:57:52,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-09 14:57:52,780 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 115 [2023-12-09 14:57:52,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 741 transitions, 7689 flow. Second operand has 13 states, 13 states have (on average 81.6923076923077) internal successors, (1062), 13 states have internal predecessors, (1062), 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) [2023-12-09 14:57:52,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:57:52,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 115 [2023-12-09 14:57:52,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:57:55,813 INFO L124 PetriNetUnfolderBase]: 8188/17331 cut-off events. [2023-12-09 14:57:55,814 INFO L125 PetriNetUnfolderBase]: For 7677/38521 co-relation queries the response was YES. [2023-12-09 14:57:55,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86577 conditions, 17331 events. 8188/17331 cut-off events. For 7677/38521 co-relation queries the response was YES. Maximal size of possible extension queue 997. Compared 167861 event pairs, 152 based on Foata normal form. 21/17235 useless extension candidates. Maximal degree in co-relation 86485. Up to 8357 conditions per place. [2023-12-09 14:57:55,891 INFO L140 encePairwiseOnDemand]: 98/115 looper letters, 53 selfloop transitions, 44 changer transitions 677/841 dead transitions. [2023-12-09 14:57:55,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 841 transitions, 10329 flow [2023-12-09 14:57:55,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 14:57:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 14:57:55,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1178 transitions. [2023-12-09 14:57:55,895 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7879598662207358 [2023-12-09 14:57:55,896 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1178 transitions. [2023-12-09 14:57:55,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1178 transitions. [2023-12-09 14:57:55,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:57:55,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1178 transitions. [2023-12-09 14:57:55,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 90.61538461538461) internal successors, (1178), 13 states have internal predecessors, (1178), 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) [2023-12-09 14:57:55,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 115.0) internal successors, (1610), 14 states have internal predecessors, (1610), 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) [2023-12-09 14:57:55,901 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 115.0) internal successors, (1610), 14 states have internal predecessors, (1610), 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) [2023-12-09 14:57:55,903 INFO L308 CegarLoopForPetriNet]: 120 programPoint places, 52 predicate places. [2023-12-09 14:57:55,903 INFO L500 AbstractCegarLoop]: Abstraction has has 172 places, 841 transitions, 10329 flow [2023-12-09 14:57:55,903 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 81.6923076923077) internal successors, (1062), 13 states have internal predecessors, (1062), 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) [2023-12-09 14:57:55,904 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:57:55,904 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:57:55,904 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 14:57:55,904 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-09 14:57:55,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:57:55,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1293081765, now seen corresponding path program 1 times [2023-12-09 14:57:55,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:57:55,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039074888] [2023-12-09 14:57:55,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:57:55,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:57:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:57:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:57:56,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:57:56,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039074888] [2023-12-09 14:57:56,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039074888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:57:56,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:57:56,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:57:56,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143051957] [2023-12-09 14:57:56,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:57:56,059 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 14:57:56,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:57:56,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 14:57:56,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:57:56,061 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 115 [2023-12-09 14:57:56,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 841 transitions, 10329 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 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) [2023-12-09 14:57:56,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:57:56,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 115 [2023-12-09 14:57:56,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:57:59,257 INFO L124 PetriNetUnfolderBase]: 9177/18623 cut-off events. [2023-12-09 14:57:59,258 INFO L125 PetriNetUnfolderBase]: For 85901/86735 co-relation queries the response was YES. [2023-12-09 14:57:59,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90811 conditions, 18623 events. 9177/18623 cut-off events. For 85901/86735 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 165394 event pairs, 396 based on Foata normal form. 36/18360 useless extension candidates. Maximal degree in co-relation 90715. Up to 7943 conditions per place. [2023-12-09 14:57:59,351 INFO L140 encePairwiseOnDemand]: 105/115 looper letters, 185 selfloop transitions, 7 changer transitions 857/1137 dead transitions. [2023-12-09 14:57:59,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 1137 transitions, 15887 flow [2023-12-09 14:57:59,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 14:57:59,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 14:57:59,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 964 transitions. [2023-12-09 14:57:59,353 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8382608695652174 [2023-12-09 14:57:59,353 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 964 transitions. [2023-12-09 14:57:59,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 964 transitions. [2023-12-09 14:57:59,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:57:59,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 964 transitions. [2023-12-09 14:57:59,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 96.4) internal successors, (964), 10 states have internal predecessors, (964), 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) [2023-12-09 14:57:59,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 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) [2023-12-09 14:57:59,357 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 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) [2023-12-09 14:57:59,357 INFO L308 CegarLoopForPetriNet]: 120 programPoint places, 61 predicate places. [2023-12-09 14:57:59,358 INFO L500 AbstractCegarLoop]: Abstraction has has 181 places, 1137 transitions, 15887 flow [2023-12-09 14:57:59,358 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 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) [2023-12-09 14:57:59,358 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:57:59,358 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:57:59,358 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 14:57:59,358 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-09 14:57:59,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:57:59,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1805418030, now seen corresponding path program 1 times [2023-12-09 14:57:59,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:57:59,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324503801] [2023-12-09 14:57:59,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:57:59,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:57:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:57:59,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:57:59,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:57:59,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324503801] [2023-12-09 14:57:59,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324503801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:57:59,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:57:59,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 14:57:59,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973095759] [2023-12-09 14:57:59,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:57:59,503 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 14:57:59,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:57:59,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 14:57:59,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-09 14:57:59,504 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 115 [2023-12-09 14:57:59,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 1137 transitions, 15887 flow. Second operand has 7 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 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) [2023-12-09 14:57:59,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:57:59,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 115 [2023-12-09 14:57:59,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:58:01,462 INFO L124 PetriNetUnfolderBase]: 4782/9224 cut-off events. [2023-12-09 14:58:01,463 INFO L125 PetriNetUnfolderBase]: For 65195/66141 co-relation queries the response was YES. [2023-12-09 14:58:01,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49295 conditions, 9224 events. 4782/9224 cut-off events. For 65195/66141 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 70832 event pairs, 185 based on Foata normal form. 32/9179 useless extension candidates. Maximal degree in co-relation 49195. Up to 3676 conditions per place. [2023-12-09 14:58:01,503 INFO L140 encePairwiseOnDemand]: 105/115 looper letters, 188 selfloop transitions, 22 changer transitions 673/969 dead transitions. [2023-12-09 14:58:01,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 969 transitions, 14458 flow [2023-12-09 14:58:01,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 14:58:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 14:58:01,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1258 transitions. [2023-12-09 14:58:01,506 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8414715719063545 [2023-12-09 14:58:01,506 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1258 transitions. [2023-12-09 14:58:01,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1258 transitions. [2023-12-09 14:58:01,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:58:01,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1258 transitions. [2023-12-09 14:58:01,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 96.76923076923077) internal successors, (1258), 13 states have internal predecessors, (1258), 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) [2023-12-09 14:58:01,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 115.0) internal successors, (1610), 14 states have internal predecessors, (1610), 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) [2023-12-09 14:58:01,511 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 115.0) internal successors, (1610), 14 states have internal predecessors, (1610), 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) [2023-12-09 14:58:01,512 INFO L308 CegarLoopForPetriNet]: 120 programPoint places, 70 predicate places. [2023-12-09 14:58:01,512 INFO L500 AbstractCegarLoop]: Abstraction has has 190 places, 969 transitions, 14458 flow [2023-12-09 14:58:01,512 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 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) [2023-12-09 14:58:01,512 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:58:01,512 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:58:01,512 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-09 14:58:01,512 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-09 14:58:01,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:58:01,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1164791632, now seen corresponding path program 1 times [2023-12-09 14:58:01,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:58:01,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857238567] [2023-12-09 14:58:01,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:58:01,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:58:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:58:03,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:58:03,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:58:03,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857238567] [2023-12-09 14:58:03,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857238567] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:58:03,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:58:03,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-09 14:58:03,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691300191] [2023-12-09 14:58:03,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:58:03,201 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-09 14:58:03,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:58:03,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-09 14:58:03,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-12-09 14:58:03,203 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 115 [2023-12-09 14:58:03,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 969 transitions, 14458 flow. Second operand has 15 states, 15 states have (on average 79.8) internal successors, (1197), 15 states have internal predecessors, (1197), 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) [2023-12-09 14:58:03,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:58:03,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 115 [2023-12-09 14:58:03,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:58:05,158 INFO L124 PetriNetUnfolderBase]: 6619/12928 cut-off events. [2023-12-09 14:58:05,159 INFO L125 PetriNetUnfolderBase]: For 119254/120378 co-relation queries the response was YES. [2023-12-09 14:58:05,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73887 conditions, 12928 events. 6619/12928 cut-off events. For 119254/120378 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 107794 event pairs, 237 based on Foata normal form. 54/12892 useless extension candidates. Maximal degree in co-relation 73774. Up to 5107 conditions per place. [2023-12-09 14:58:05,235 INFO L140 encePairwiseOnDemand]: 99/115 looper letters, 161 selfloop transitions, 32 changer transitions 989/1284 dead transitions. [2023-12-09 14:58:05,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 1284 transitions, 22182 flow [2023-12-09 14:58:05,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-09 14:58:05,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-12-09 14:58:05,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1214 transitions. [2023-12-09 14:58:05,238 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7540372670807454 [2023-12-09 14:58:05,238 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1214 transitions. [2023-12-09 14:58:05,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1214 transitions. [2023-12-09 14:58:05,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:58:05,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1214 transitions. [2023-12-09 14:58:05,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 86.71428571428571) internal successors, (1214), 14 states have internal predecessors, (1214), 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) [2023-12-09 14:58:05,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 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) [2023-12-09 14:58:05,243 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 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) [2023-12-09 14:58:05,243 INFO L308 CegarLoopForPetriNet]: 120 programPoint places, 83 predicate places. [2023-12-09 14:58:05,243 INFO L500 AbstractCegarLoop]: Abstraction has has 203 places, 1284 transitions, 22182 flow [2023-12-09 14:58:05,244 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 79.8) internal successors, (1197), 15 states have internal predecessors, (1197), 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) [2023-12-09 14:58:05,244 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:58:05,244 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:58:05,244 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-09 14:58:05,244 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-09 14:58:05,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:58:05,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1977141132, now seen corresponding path program 2 times [2023-12-09 14:58:05,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:58:05,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662207883] [2023-12-09 14:58:05,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:58:05,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:58:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:58:05,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:58:05,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:58:05,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662207883] [2023-12-09 14:58:05,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662207883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:58:05,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:58:05,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-09 14:58:05,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337310249] [2023-12-09 14:58:05,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:58:05,580 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-09 14:58:05,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:58:05,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-09 14:58:05,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-09 14:58:05,582 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 115 [2023-12-09 14:58:05,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 1284 transitions, 22182 flow. Second operand has 8 states, 8 states have (on average 86.75) internal successors, (694), 8 states have internal predecessors, (694), 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) [2023-12-09 14:58:05,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:58:05,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 115 [2023-12-09 14:58:05,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:58:08,082 INFO L124 PetriNetUnfolderBase]: 6177/11497 cut-off events. [2023-12-09 14:58:08,082 INFO L125 PetriNetUnfolderBase]: For 117246/118550 co-relation queries the response was YES. [2023-12-09 14:58:08,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74914 conditions, 11497 events. 6177/11497 cut-off events. For 117246/118550 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 95601 event pairs, 234 based on Foata normal form. 50/11512 useless extension candidates. Maximal degree in co-relation 74797. Up to 4648 conditions per place. [2023-12-09 14:58:08,125 INFO L140 encePairwiseOnDemand]: 105/115 looper letters, 172 selfloop transitions, 26 changer transitions 816/1087 dead transitions. [2023-12-09 14:58:08,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 1087 transitions, 20782 flow [2023-12-09 14:58:08,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 14:58:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 14:58:08,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1491 transitions. [2023-12-09 14:58:08,130 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8103260869565218 [2023-12-09 14:58:08,130 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1491 transitions. [2023-12-09 14:58:08,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1491 transitions. [2023-12-09 14:58:08,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:58:08,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1491 transitions. [2023-12-09 14:58:08,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 93.1875) internal successors, (1491), 16 states have internal predecessors, (1491), 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) [2023-12-09 14:58:08,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 115.0) internal successors, (1955), 17 states have internal predecessors, (1955), 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) [2023-12-09 14:58:08,139 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 115.0) internal successors, (1955), 17 states have internal predecessors, (1955), 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) [2023-12-09 14:58:08,140 INFO L308 CegarLoopForPetriNet]: 120 programPoint places, 71 predicate places. [2023-12-09 14:58:08,140 INFO L500 AbstractCegarLoop]: Abstraction has has 191 places, 1087 transitions, 20782 flow [2023-12-09 14:58:08,141 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 86.75) internal successors, (694), 8 states have internal predecessors, (694), 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) [2023-12-09 14:58:08,141 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:58:08,141 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:58:08,141 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-09 14:58:08,142 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-09 14:58:08,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:58:08,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1761907501, now seen corresponding path program 1 times [2023-12-09 14:58:08,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:58:08,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980506344] [2023-12-09 14:58:08,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:58:08,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:58:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:58:09,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:58:09,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:58:09,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980506344] [2023-12-09 14:58:09,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980506344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:58:09,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:58:09,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-09 14:58:09,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695317093] [2023-12-09 14:58:09,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:58:09,108 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 14:58:09,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:58:09,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 14:58:09,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-12-09 14:58:09,109 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 115 [2023-12-09 14:58:09,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 1087 transitions, 20782 flow. Second operand has 14 states, 14 states have (on average 83.85714285714286) internal successors, (1174), 14 states have internal predecessors, (1174), 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) [2023-12-09 14:58:09,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:58:09,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 115 [2023-12-09 14:58:09,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:58:12,182 INFO L124 PetriNetUnfolderBase]: 10346/19232 cut-off events. [2023-12-09 14:58:12,183 INFO L125 PetriNetUnfolderBase]: For 253882/257001 co-relation queries the response was YES. [2023-12-09 14:58:12,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132382 conditions, 19232 events. 10346/19232 cut-off events. For 253882/257001 co-relation queries the response was YES. Maximal size of possible extension queue 1146. Compared 174083 event pairs, 294 based on Foata normal form. 1023/20220 useless extension candidates. Maximal degree in co-relation 132256. Up to 7728 conditions per place. [2023-12-09 14:58:12,256 INFO L140 encePairwiseOnDemand]: 97/115 looper letters, 153 selfloop transitions, 30 changer transitions 1700/1984 dead transitions. [2023-12-09 14:58:12,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 1984 transitions, 44002 flow [2023-12-09 14:58:12,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-09 14:58:12,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-12-09 14:58:12,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1223 transitions. [2023-12-09 14:58:12,258 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7596273291925466 [2023-12-09 14:58:12,258 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1223 transitions. [2023-12-09 14:58:12,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1223 transitions. [2023-12-09 14:58:12,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:58:12,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1223 transitions. [2023-12-09 14:58:12,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 87.35714285714286) internal successors, (1223), 14 states have internal predecessors, (1223), 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) [2023-12-09 14:58:12,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 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) [2023-12-09 14:58:12,262 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 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) [2023-12-09 14:58:12,262 INFO L308 CegarLoopForPetriNet]: 120 programPoint places, 84 predicate places. [2023-12-09 14:58:12,263 INFO L500 AbstractCegarLoop]: Abstraction has has 204 places, 1984 transitions, 44002 flow [2023-12-09 14:58:12,263 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 83.85714285714286) internal successors, (1174), 14 states have internal predecessors, (1174), 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) [2023-12-09 14:58:12,263 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:58:12,263 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:58:12,263 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-09 14:58:12,263 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-09 14:58:12,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:58:12,264 INFO L85 PathProgramCache]: Analyzing trace with hash 739237769, now seen corresponding path program 2 times [2023-12-09 14:58:12,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:58:12,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036004314] [2023-12-09 14:58:12,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:58:12,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:58:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:58:12,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:58:12,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:58:12,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036004314] [2023-12-09 14:58:12,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036004314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:58:12,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:58:12,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 14:58:12,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596961692] [2023-12-09 14:58:12,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:58:12,480 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 14:58:12,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:58:12,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 14:58:12,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-09 14:58:12,481 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 115 [2023-12-09 14:58:12,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 1984 transitions, 44002 flow. Second operand has 7 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 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) [2023-12-09 14:58:12,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:58:12,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 115 [2023-12-09 14:58:12,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:58:19,042 INFO L124 PetriNetUnfolderBase]: 19703/35942 cut-off events. [2023-12-09 14:58:19,042 INFO L125 PetriNetUnfolderBase]: For 664164/671182 co-relation queries the response was YES. [2023-12-09 14:58:19,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266738 conditions, 35942 events. 19703/35942 cut-off events. For 664164/671182 co-relation queries the response was YES. Maximal size of possible extension queue 2085. Compared 346511 event pairs, 547 based on Foata normal form. 1670/37506 useless extension candidates. Maximal degree in co-relation 266607. Up to 14975 conditions per place. [2023-12-09 14:58:19,249 INFO L140 encePairwiseOnDemand]: 107/115 looper letters, 100 selfloop transitions, 1 changer transitions 3190/3381 dead transitions. [2023-12-09 14:58:19,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 3381 transitions, 83682 flow [2023-12-09 14:58:19,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 14:58:19,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 14:58:19,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 647 transitions. [2023-12-09 14:58:19,251 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8037267080745342 [2023-12-09 14:58:19,251 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 647 transitions. [2023-12-09 14:58:19,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 647 transitions. [2023-12-09 14:58:19,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:58:19,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 647 transitions. [2023-12-09 14:58:19,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 states have internal predecessors, (647), 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) [2023-12-09 14:58:19,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 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) [2023-12-09 14:58:19,253 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 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) [2023-12-09 14:58:19,254 INFO L308 CegarLoopForPetriNet]: 120 programPoint places, 90 predicate places. [2023-12-09 14:58:19,254 INFO L500 AbstractCegarLoop]: Abstraction has has 210 places, 3381 transitions, 83682 flow [2023-12-09 14:58:19,254 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 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) [2023-12-09 14:58:19,254 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:58:19,254 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:58:19,254 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-09 14:58:19,254 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-09 14:58:19,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:58:19,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1016937315, now seen corresponding path program 3 times [2023-12-09 14:58:19,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:58:19,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027093689] [2023-12-09 14:58:19,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:58:19,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:58:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:58:19,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:58:19,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:58:19,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027093689] [2023-12-09 14:58:19,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027093689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:58:19,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:58:19,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-09 14:58:19,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868238287] [2023-12-09 14:58:19,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:58:19,871 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 14:58:19,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:58:19,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 14:58:19,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-09 14:58:19,873 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 115 [2023-12-09 14:58:19,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 3381 transitions, 83682 flow. Second operand has 11 states, 11 states have (on average 84.36363636363636) internal successors, (928), 11 states have internal predecessors, (928), 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) [2023-12-09 14:58:19,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:58:19,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 115 [2023-12-09 14:58:19,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:58:31,104 INFO L124 PetriNetUnfolderBase]: 26280/47407 cut-off events. [2023-12-09 14:58:31,104 INFO L125 PetriNetUnfolderBase]: For 1092487/1100886 co-relation queries the response was YES. [2023-12-09 14:58:31,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376255 conditions, 47407 events. 26280/47407 cut-off events. For 1092487/1100886 co-relation queries the response was YES. Maximal size of possible extension queue 2810. Compared 473207 event pairs, 684 based on Foata normal form. 2721/49976 useless extension candidates. Maximal degree in co-relation 376115. Up to 20211 conditions per place. [2023-12-09 14:58:31,382 INFO L140 encePairwiseOnDemand]: 99/115 looper letters, 91 selfloop transitions, 20 changer transitions 4408/4599 dead transitions. [2023-12-09 14:58:31,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 4599 transitions, 123914 flow [2023-12-09 14:58:31,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 14:58:31,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 14:58:31,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 885 transitions. [2023-12-09 14:58:31,384 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7695652173913043 [2023-12-09 14:58:31,384 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 885 transitions. [2023-12-09 14:58:31,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 885 transitions. [2023-12-09 14:58:31,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:58:31,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 885 transitions. [2023-12-09 14:58:31,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 88.5) internal successors, (885), 10 states have internal predecessors, (885), 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) [2023-12-09 14:58:31,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 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) [2023-12-09 14:58:31,387 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 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) [2023-12-09 14:58:31,387 INFO L308 CegarLoopForPetriNet]: 120 programPoint places, 99 predicate places. [2023-12-09 14:58:31,387 INFO L500 AbstractCegarLoop]: Abstraction has has 219 places, 4599 transitions, 123914 flow [2023-12-09 14:58:31,388 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 84.36363636363636) internal successors, (928), 11 states have internal predecessors, (928), 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) [2023-12-09 14:58:31,388 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:58:31,388 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:58:31,388 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-09 14:58:31,388 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-09 14:58:31,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:58:31,388 INFO L85 PathProgramCache]: Analyzing trace with hash 646914863, now seen corresponding path program 4 times [2023-12-09 14:58:31,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:58:31,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054396936] [2023-12-09 14:58:31,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:58:31,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:58:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:58:32,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:58:32,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:58:32,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054396936] [2023-12-09 14:58:32,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054396936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:58:32,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:58:32,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-09 14:58:32,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938305249] [2023-12-09 14:58:32,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:58:32,862 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 14:58:32,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:58:32,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 14:58:32,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-12-09 14:58:32,864 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 115 [2023-12-09 14:58:32,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 4599 transitions, 123914 flow. Second operand has 16 states, 16 states have (on average 79.875) internal successors, (1278), 16 states have internal predecessors, (1278), 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) [2023-12-09 14:58:32,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:58:32,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 115 [2023-12-09 14:58:32,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:58:50,498 INFO L124 PetriNetUnfolderBase]: 32162/58211 cut-off events. [2023-12-09 14:58:50,498 INFO L125 PetriNetUnfolderBase]: For 1602649/1618175 co-relation queries the response was YES. [2023-12-09 14:58:50,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484884 conditions, 58211 events. 32162/58211 cut-off events. For 1602649/1618175 co-relation queries the response was YES. Maximal size of possible extension queue 3491. Compared 599935 event pairs, 812 based on Foata normal form. 2898/60945 useless extension candidates. Maximal degree in co-relation 484731. Up to 24735 conditions per place. [2023-12-09 14:58:50,868 INFO L140 encePairwiseOnDemand]: 101/115 looper letters, 55 selfloop transitions, 9 changer transitions 5735/5870 dead transitions. [2023-12-09 14:58:50,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 5870 transitions, 170664 flow [2023-12-09 14:58:50,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-09 14:58:50,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-12-09 14:58:50,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1162 transitions. [2023-12-09 14:58:50,870 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7217391304347827 [2023-12-09 14:58:50,870 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1162 transitions. [2023-12-09 14:58:50,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1162 transitions. [2023-12-09 14:58:50,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:58:50,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1162 transitions. [2023-12-09 14:58:50,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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) [2023-12-09 14:58:50,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 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) [2023-12-09 14:58:50,874 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 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) [2023-12-09 14:58:50,874 INFO L308 CegarLoopForPetriNet]: 120 programPoint places, 112 predicate places. [2023-12-09 14:58:50,874 INFO L500 AbstractCegarLoop]: Abstraction has has 232 places, 5870 transitions, 170664 flow [2023-12-09 14:58:50,875 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.875) internal successors, (1278), 16 states have internal predecessors, (1278), 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) [2023-12-09 14:58:50,875 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:58:50,875 INFO L233 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:58:50,875 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-09 14:58:50,875 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-12-09 14:58:50,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:58:50,875 INFO L85 PathProgramCache]: Analyzing trace with hash 965599981, now seen corresponding path program 5 times [2023-12-09 14:58:50,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:58:50,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946286891] [2023-12-09 14:58:50,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:58:50,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:58:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:58:51,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:58:51,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:58:51,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946286891] [2023-12-09 14:58:51,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946286891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:58:51,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:58:51,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-09 14:58:51,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019963413] [2023-12-09 14:58:51,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:58:51,970 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-09 14:58:51,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:58:51,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-09 14:58:51,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-12-09 14:58:51,971 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 115 [2023-12-09 14:58:51,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 5870 transitions, 170664 flow. Second operand has 17 states, 17 states have (on average 81.6470588235294) internal successors, (1388), 17 states have internal predecessors, (1388), 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) [2023-12-09 14:58:51,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:58:51,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 115 [2023-12-09 14:58:51,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:59:14,841 INFO L124 PetriNetUnfolderBase]: 32573/59584 cut-off events. [2023-12-09 14:59:14,842 INFO L125 PetriNetUnfolderBase]: For 1874467/1893696 co-relation queries the response was YES. [2023-12-09 14:59:15,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515153 conditions, 59584 events. 32573/59584 cut-off events. For 1874467/1893696 co-relation queries the response was YES. Maximal size of possible extension queue 3601. Compared 621687 event pairs, 833 based on Foata normal form. 2671/62134 useless extension candidates. Maximal degree in co-relation 514989. Up to 24793 conditions per place. [2023-12-09 14:59:15,231 INFO L140 encePairwiseOnDemand]: 99/115 looper letters, 0 selfloop transitions, 0 changer transitions 6070/6070 dead transitions. [2023-12-09 14:59:15,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 6070 transitions, 188440 flow [2023-12-09 14:59:15,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 14:59:15,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 14:59:15,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1351 transitions. [2023-12-09 14:59:15,233 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7342391304347826 [2023-12-09 14:59:15,233 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1351 transitions. [2023-12-09 14:59:15,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1351 transitions. [2023-12-09 14:59:15,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:59:15,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1351 transitions. [2023-12-09 14:59:15,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 84.4375) internal successors, (1351), 16 states have internal predecessors, (1351), 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) [2023-12-09 14:59:15,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 115.0) internal successors, (1955), 17 states have internal predecessors, (1955), 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) [2023-12-09 14:59:15,237 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 115.0) internal successors, (1955), 17 states have internal predecessors, (1955), 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) [2023-12-09 14:59:15,237 INFO L308 CegarLoopForPetriNet]: 120 programPoint places, 125 predicate places. [2023-12-09 14:59:15,237 INFO L500 AbstractCegarLoop]: Abstraction has has 245 places, 6070 transitions, 188440 flow [2023-12-09 14:59:15,238 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 81.6470588235294) internal successors, (1388), 17 states have internal predecessors, (1388), 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) [2023-12-09 14:59:15,244 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/safe035_power.i_BEv2_AllErrorsAtOnce [2023-12-09 14:59:15,297 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-12-09 14:59:15,298 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-12-09 14:59:15,300 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-12-09 14:59:15,300 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-12-09 14:59:15,300 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-12-09 14:59:15,300 INFO L810 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-12-09 14:59:15,300 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-09 14:59:15,301 INFO L457 BasicCegarLoop]: Path program histogram: [5, 2, 2, 2, 1, 1, 1, 1] [2023-12-09 14:59:15,305 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 14:59:15,305 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 14:59:15,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:59:15 BasicIcfg [2023-12-09 14:59:15,310 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 14:59:15,311 INFO L158 Benchmark]: Toolchain (without parser) took 97016.52ms. Allocated memory was 316.7MB in the beginning and 6.2GB in the end (delta: 5.8GB). Free memory was 258.8MB in the beginning and 3.1GB in the end (delta: -2.9GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2023-12-09 14:59:15,311 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 198.2MB. Free memory was 144.2MB in the beginning and 144.1MB in the end (delta: 89.1kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 14:59:15,311 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.18ms. Allocated memory is still 316.7MB. Free memory was 258.8MB in the beginning and 231.1MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-12-09 14:59:15,311 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.09ms. Allocated memory is still 316.7MB. Free memory was 231.1MB in the beginning and 227.4MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-09 14:59:15,311 INFO L158 Benchmark]: Boogie Preprocessor took 84.69ms. Allocated memory is still 316.7MB. Free memory was 227.4MB in the beginning and 225.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 14:59:15,312 INFO L158 Benchmark]: RCFGBuilder took 710.96ms. Allocated memory is still 316.7MB. Free memory was 225.3MB in the beginning and 164.0MB in the end (delta: 61.3MB). Peak memory consumption was 59.8MB. Max. memory is 8.0GB. [2023-12-09 14:59:15,312 INFO L158 Benchmark]: TraceAbstraction took 95659.58ms. Allocated memory was 316.7MB in the beginning and 6.2GB in the end (delta: 5.8GB). Free memory was 163.4MB in the beginning and 3.1GB in the end (delta: -3.0GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2023-12-09 14:59:15,313 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 198.2MB. Free memory was 144.2MB in the beginning and 144.1MB in the end (delta: 89.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 500.18ms. Allocated memory is still 316.7MB. Free memory was 258.8MB in the beginning and 231.1MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.09ms. Allocated memory is still 316.7MB. Free memory was 231.1MB in the beginning and 227.4MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 84.69ms. Allocated memory is still 316.7MB. Free memory was 227.4MB in the beginning and 225.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 710.96ms. Allocated memory is still 316.7MB. Free memory was 225.3MB in the beginning and 164.0MB in the end (delta: 61.3MB). Peak memory consumption was 59.8MB. Max. memory is 8.0GB. * TraceAbstraction took 95659.58ms. Allocated memory was 316.7MB in the beginning and 6.2GB in the end (delta: 5.8GB). Free memory was 163.4MB in the beginning and 3.1GB in the end (delta: -3.0GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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: 18]: 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 7 procedures, 145 locations, 6 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: 95.5s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 83.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1554 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1554 mSDsluCounter, 1540 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1277 mSDsCounter, 296 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4042 IncrementalHoareTripleChecker+Invalid, 4338 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 296 mSolverCounterUnsat, 263 mSDtfsCounter, 4042 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 243 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=188440occurred in iteration=15, InterpolantAutomatonStates: 174, 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: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 11.1s InterpolantComputationTime, 1182 NumberOfCodeBlocks, 1182 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1167 ConstructedInterpolants, 0 QuantifiedInterpolants, 6303 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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! [2023-12-09 14:59:15,326 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...