/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-7.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:06:56,726 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:06:56,780 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 16:06:56,802 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:06:56,803 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:06:56,803 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:06:56,803 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:06:56,804 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:06:56,804 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:06:56,805 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:06:56,805 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:06:56,805 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:06:56,805 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:06:56,806 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:06:56,806 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:06:56,806 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:06:56,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:06:56,807 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:06:56,807 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:06:56,808 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:06:56,808 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:06:56,809 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:06:56,809 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:06:56,809 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:06:56,809 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:06:56,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:06:56,810 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:06:56,810 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:06:56,811 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:06:56,811 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:06:56,811 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:06:56,811 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:06:56,812 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:06:57,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:06:57,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:06:57,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:06:57,110 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:06:57,111 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:06:57,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-7.wvr.c [2023-11-17 16:06:58,376 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:06:58,588 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:06:58,589 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-7.wvr.c [2023-11-17 16:06:58,595 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4726211d/4c30acb6cd864894a245060247b48a9d/FLAGc2aac3aa6 [2023-11-17 16:06:58,607 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4726211d/4c30acb6cd864894a245060247b48a9d [2023-11-17 16:06:58,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:06:58,612 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:06:58,613 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:06:58,613 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:06:58,617 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:06:58,618 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:06:58" (1/1) ... [2023-11-17 16:06:58,619 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b403cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:58, skipping insertion in model container [2023-11-17 16:06:58,619 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:06:58" (1/1) ... [2023-11-17 16:06:58,652 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:06:58,792 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-7.wvr.c[4928,4941] [2023-11-17 16:06:58,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:06:58,813 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:06:58,863 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-7.wvr.c[4928,4941] [2023-11-17 16:06:58,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:06:58,876 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:06:58,877 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:06:58,883 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:06:58,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:58 WrapperNode [2023-11-17 16:06:58,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:06:58,887 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:06:58,887 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:06:58,887 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:06:58,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:58" (1/1) ... [2023-11-17 16:06:58,920 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:58" (1/1) ... [2023-11-17 16:06:58,964 INFO L138 Inliner]: procedures = 26, calls = 115, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 335 [2023-11-17 16:06:58,964 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:06:58,965 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:06:58,965 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:06:58,965 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:06:58,974 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:58" (1/1) ... [2023-11-17 16:06:58,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:58" (1/1) ... [2023-11-17 16:06:58,986 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:58" (1/1) ... [2023-11-17 16:06:58,987 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:58" (1/1) ... [2023-11-17 16:06:58,997 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:58" (1/1) ... [2023-11-17 16:06:58,999 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:58" (1/1) ... [2023-11-17 16:06:59,001 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:58" (1/1) ... [2023-11-17 16:06:59,003 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:58" (1/1) ... [2023-11-17 16:06:59,020 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:06:59,021 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:06:59,021 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:06:59,021 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:06:59,021 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:58" (1/1) ... [2023-11-17 16:06:59,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:06:59,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:06:59,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 16:06:59,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 16:06:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:06:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:06:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:06:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:06:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:06:59,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:06:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:06:59,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:06:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 16:06:59,093 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 16:06:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-17 16:06:59,093 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-17 16:06:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:06:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-17 16:06:59,094 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-17 16:06:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-17 16:06:59,094 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-17 16:06:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2023-11-17 16:06:59,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2023-11-17 16:06:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:06:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:06:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:06:59,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:06:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:06:59,098 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 16:06:59,238 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:06:59,241 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:06:59,694 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:06:59,788 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:06:59,788 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 16:06:59,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:06:59 BoogieIcfgContainer [2023-11-17 16:06:59,790 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:06:59,792 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:06:59,793 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:06:59,795 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:06:59,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:06:58" (1/3) ... [2023-11-17 16:06:59,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cf2a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:06:59, skipping insertion in model container [2023-11-17 16:06:59,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:06:58" (2/3) ... [2023-11-17 16:06:59,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cf2a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:06:59, skipping insertion in model container [2023-11-17 16:06:59,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:06:59" (3/3) ... [2023-11-17 16:06:59,798 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-7.wvr.c [2023-11-17 16:06:59,821 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:06:59,821 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:06:59,821 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:06:59,956 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-11-17 16:07:00,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 225 transitions, 499 flow [2023-11-17 16:07:00,123 INFO L124 PetriNetUnfolderBase]: 2/218 cut-off events. [2023-11-17 16:07:00,123 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-17 16:07:00,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 218 events. 2/218 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 111 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 171. Up to 2 conditions per place. [2023-11-17 16:07:00,128 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 225 transitions, 499 flow [2023-11-17 16:07:00,142 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 199 transitions, 440 flow [2023-11-17 16:07:00,152 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:07:00,165 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 199 transitions, 440 flow [2023-11-17 16:07:00,168 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 199 transitions, 440 flow [2023-11-17 16:07:00,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 199 transitions, 440 flow [2023-11-17 16:07:00,218 INFO L124 PetriNetUnfolderBase]: 2/199 cut-off events. [2023-11-17 16:07:00,218 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-17 16:07:00,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 199 events. 2/199 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 110 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 171. Up to 2 conditions per place. [2023-11-17 16:07:00,224 INFO L119 LiptonReduction]: Number of co-enabled transitions 5160 [2023-11-17 16:07:10,643 INFO L134 LiptonReduction]: Checked pairs total: 10769 [2023-11-17 16:07:10,644 INFO L136 LiptonReduction]: Total number of compositions: 165 [2023-11-17 16:07:10,673 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:07:10,678 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c668e83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:07:10,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-17 16:07:10,698 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:07:10,698 INFO L124 PetriNetUnfolderBase]: 0/43 cut-off events. [2023-11-17 16:07:10,698 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-17 16:07:10,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:07:10,699 INFO L208 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] [2023-11-17 16:07:10,700 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-17 16:07:10,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:07:10,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1528612063, now seen corresponding path program 1 times [2023-11-17 16:07:10,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:07:10,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790054129] [2023-11-17 16:07:10,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:07:10,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:07:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:07:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:12,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:07:12,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790054129] [2023-11-17 16:07:12,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790054129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:07:12,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:07:12,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:07:12,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071722023] [2023-11-17 16:07:12,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:07:12,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:07:12,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:07:12,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:07:12,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:07:12,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 390 [2023-11-17 16:07:12,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 44 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:12,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:07:12,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 390 [2023-11-17 16:07:12,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:07:20,226 INFO L124 PetriNetUnfolderBase]: 65069/81921 cut-off events. [2023-11-17 16:07:20,226 INFO L125 PetriNetUnfolderBase]: For 6338/6338 co-relation queries the response was YES. [2023-11-17 16:07:20,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170091 conditions, 81921 events. 65069/81921 cut-off events. For 6338/6338 co-relation queries the response was YES. Maximal size of possible extension queue 1929. Compared 398495 event pairs, 17843 based on Foata normal form. 1/81922 useless extension candidates. Maximal degree in co-relation 133606. Up to 38466 conditions per place. [2023-11-17 16:07:20,790 INFO L140 encePairwiseOnDemand]: 380/390 looper letters, 102 selfloop transitions, 15 changer transitions 14/131 dead transitions. [2023-11-17 16:07:20,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 131 transitions, 635 flow [2023-11-17 16:07:20,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:07:20,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:07:20,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 997 transitions. [2023-11-17 16:07:20,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5112820512820513 [2023-11-17 16:07:20,816 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 997 transitions. [2023-11-17 16:07:20,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 997 transitions. [2023-11-17 16:07:20,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:07:20,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 997 transitions. [2023-11-17 16:07:20,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.4) internal successors, (997), 5 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:20,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:20,840 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:20,842 INFO L175 Difference]: Start difference. First operand has 66 places, 44 transitions, 130 flow. Second operand 5 states and 997 transitions. [2023-11-17 16:07:20,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 131 transitions, 635 flow [2023-11-17 16:07:21,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 131 transitions, 561 flow, removed 0 selfloop flow, removed 14 redundant places. [2023-11-17 16:07:21,153 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 208 flow [2023-11-17 16:07:21,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2023-11-17 16:07:21,159 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -7 predicate places. [2023-11-17 16:07:21,159 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 208 flow [2023-11-17 16:07:21,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:21,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:07:21,160 INFO L208 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] [2023-11-17 16:07:21,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:07:21,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-17 16:07:21,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:07:21,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1027270401, now seen corresponding path program 2 times [2023-11-17 16:07:21,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:07:21,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734592823] [2023-11-17 16:07:21,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:07:21,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:07:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:07:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:22,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:07:22,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734592823] [2023-11-17 16:07:22,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734592823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:07:22,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:07:22,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:07:22,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534823339] [2023-11-17 16:07:22,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:07:22,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:07:22,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:07:22,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:07:22,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:07:22,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 390 [2023-11-17 16:07:22,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:22,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:07:22,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 390 [2023-11-17 16:07:22,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:07:27,900 INFO L124 PetriNetUnfolderBase]: 63137/79989 cut-off events. [2023-11-17 16:07:27,900 INFO L125 PetriNetUnfolderBase]: For 29076/29076 co-relation queries the response was YES. [2023-11-17 16:07:28,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229427 conditions, 79989 events. 63137/79989 cut-off events. For 29076/29076 co-relation queries the response was YES. Maximal size of possible extension queue 1991. Compared 399257 event pairs, 12271 based on Foata normal form. 1/79990 useless extension candidates. Maximal degree in co-relation 143561. Up to 37560 conditions per place. [2023-11-17 16:07:28,316 INFO L140 encePairwiseOnDemand]: 380/390 looper letters, 119 selfloop transitions, 21 changer transitions 22/162 dead transitions. [2023-11-17 16:07:28,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 162 transitions, 845 flow [2023-11-17 16:07:28,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:07:28,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:07:28,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1195 transitions. [2023-11-17 16:07:28,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106837606837606 [2023-11-17 16:07:28,320 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1195 transitions. [2023-11-17 16:07:28,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1195 transitions. [2023-11-17 16:07:28,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:07:28,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1195 transitions. [2023-11-17 16:07:28,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 199.16666666666666) internal successors, (1195), 6 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:28,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:28,330 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:28,330 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 208 flow. Second operand 6 states and 1195 transitions. [2023-11-17 16:07:28,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 162 transitions, 845 flow [2023-11-17 16:07:28,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 162 transitions, 828 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 16:07:28,353 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 319 flow [2023-11-17 16:07:28,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-11-17 16:07:28,354 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2023-11-17 16:07:28,354 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 319 flow [2023-11-17 16:07:28,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:28,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:07:28,355 INFO L208 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] [2023-11-17 16:07:28,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:07:28,355 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-17 16:07:28,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:07:28,356 INFO L85 PathProgramCache]: Analyzing trace with hash 351855885, now seen corresponding path program 3 times [2023-11-17 16:07:28,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:07:28,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643887774] [2023-11-17 16:07:28,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:07:28,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:07:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:07:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:28,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:07:28,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643887774] [2023-11-17 16:07:28,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643887774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:07:28,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:07:28,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:07:28,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826472209] [2023-11-17 16:07:28,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:07:28,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:07:28,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:07:28,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:07:28,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:07:28,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 390 [2023-11-17 16:07:28,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 319 flow. Second operand has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:28,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:07:28,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 390 [2023-11-17 16:07:28,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:07:32,899 INFO L124 PetriNetUnfolderBase]: 49235/62082 cut-off events. [2023-11-17 16:07:32,899 INFO L125 PetriNetUnfolderBase]: For 72637/72637 co-relation queries the response was YES. [2023-11-17 16:07:33,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222686 conditions, 62082 events. 49235/62082 cut-off events. For 72637/72637 co-relation queries the response was YES. Maximal size of possible extension queue 1578. Compared 300122 event pairs, 7642 based on Foata normal form. 366/62448 useless extension candidates. Maximal degree in co-relation 115750. Up to 57822 conditions per place. [2023-11-17 16:07:33,278 INFO L140 encePairwiseOnDemand]: 376/390 looper letters, 98 selfloop transitions, 31 changer transitions 0/129 dead transitions. [2023-11-17 16:07:33,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 129 transitions, 801 flow [2023-11-17 16:07:33,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:07:33,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:07:33,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1013 transitions. [2023-11-17 16:07:33,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5194871794871795 [2023-11-17 16:07:33,282 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1013 transitions. [2023-11-17 16:07:33,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1013 transitions. [2023-11-17 16:07:33,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:07:33,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1013 transitions. [2023-11-17 16:07:33,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:33,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:33,289 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:33,289 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 319 flow. Second operand 5 states and 1013 transitions. [2023-11-17 16:07:33,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 129 transitions, 801 flow [2023-11-17 16:07:33,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 129 transitions, 666 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-11-17 16:07:33,594 INFO L231 Difference]: Finished difference. Result has 64 places, 81 transitions, 376 flow [2023-11-17 16:07:33,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=376, PETRI_PLACES=64, PETRI_TRANSITIONS=81} [2023-11-17 16:07:33,595 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -2 predicate places. [2023-11-17 16:07:33,595 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 81 transitions, 376 flow [2023-11-17 16:07:33,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:33,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:07:33,596 INFO L208 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] [2023-11-17 16:07:33,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 16:07:33,596 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-17 16:07:33,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:07:33,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1972597569, now seen corresponding path program 4 times [2023-11-17 16:07:33,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:07:33,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494737272] [2023-11-17 16:07:33,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:07:33,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:07:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:07:33,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:33,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:07:33,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494737272] [2023-11-17 16:07:33,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494737272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:07:33,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:07:33,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 16:07:33,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587753456] [2023-11-17 16:07:33,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:07:33,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 16:07:33,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:07:33,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 16:07:33,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:07:33,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 390 [2023-11-17 16:07:33,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 81 transitions, 376 flow. Second operand has 9 states, 9 states have (on average 184.88888888888889) internal successors, (1664), 9 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:33,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:07:33,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 390 [2023-11-17 16:07:33,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:07:38,182 INFO L124 PetriNetUnfolderBase]: 49455/62350 cut-off events. [2023-11-17 16:07:38,182 INFO L125 PetriNetUnfolderBase]: For 100762/100762 co-relation queries the response was YES. [2023-11-17 16:07:38,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220950 conditions, 62350 events. 49455/62350 cut-off events. For 100762/100762 co-relation queries the response was YES. Maximal size of possible extension queue 1603. Compared 293865 event pairs, 17640 based on Foata normal form. 48/62398 useless extension candidates. Maximal degree in co-relation 62193. Up to 58004 conditions per place. [2023-11-17 16:07:38,519 INFO L140 encePairwiseOnDemand]: 376/390 looper letters, 124 selfloop transitions, 144 changer transitions 0/268 dead transitions. [2023-11-17 16:07:38,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 268 transitions, 1799 flow [2023-11-17 16:07:38,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:07:38,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:07:38,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1811 transitions. [2023-11-17 16:07:38,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159544159544159 [2023-11-17 16:07:38,524 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1811 transitions. [2023-11-17 16:07:38,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1811 transitions. [2023-11-17 16:07:38,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:07:38,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1811 transitions. [2023-11-17 16:07:38,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 201.22222222222223) internal successors, (1811), 9 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:38,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 390.0) internal successors, (3900), 10 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:38,535 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 390.0) internal successors, (3900), 10 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:38,535 INFO L175 Difference]: Start difference. First operand has 64 places, 81 transitions, 376 flow. Second operand 9 states and 1811 transitions. [2023-11-17 16:07:38,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 268 transitions, 1799 flow [2023-11-17 16:07:38,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 268 transitions, 1799 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 16:07:38,584 INFO L231 Difference]: Finished difference. Result has 72 places, 206 transitions, 1418 flow [2023-11-17 16:07:38,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1418, PETRI_PLACES=72, PETRI_TRANSITIONS=206} [2023-11-17 16:07:38,585 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 6 predicate places. [2023-11-17 16:07:38,586 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 206 transitions, 1418 flow [2023-11-17 16:07:38,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 184.88888888888889) internal successors, (1664), 9 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:38,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:07:38,587 INFO L208 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] [2023-11-17 16:07:38,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 16:07:38,587 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-17 16:07:38,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:07:38,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1410374051, now seen corresponding path program 5 times [2023-11-17 16:07:38,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:07:38,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375722183] [2023-11-17 16:07:38,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:07:38,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:07:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:07:38,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:38,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:07:38,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375722183] [2023-11-17 16:07:38,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375722183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:07:38,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:07:38,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:07:38,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488533501] [2023-11-17 16:07:38,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:07:38,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:07:38,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:07:38,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:07:38,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:07:38,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 390 [2023-11-17 16:07:38,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 206 transitions, 1418 flow. Second operand has 7 states, 7 states have (on average 186.28571428571428) internal successors, (1304), 7 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:38,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:07:38,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 390 [2023-11-17 16:07:38,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:07:43,406 INFO L124 PetriNetUnfolderBase]: 50490/63603 cut-off events. [2023-11-17 16:07:43,406 INFO L125 PetriNetUnfolderBase]: For 120742/120742 co-relation queries the response was YES. [2023-11-17 16:07:43,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251646 conditions, 63603 events. 50490/63603 cut-off events. For 120742/120742 co-relation queries the response was YES. Maximal size of possible extension queue 1627. Compared 299795 event pairs, 18090 based on Foata normal form. 218/63821 useless extension candidates. Maximal degree in co-relation 72741. Up to 58598 conditions per place. [2023-11-17 16:07:43,917 INFO L140 encePairwiseOnDemand]: 376/390 looper letters, 134 selfloop transitions, 168 changer transitions 0/302 dead transitions. [2023-11-17 16:07:43,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 302 transitions, 2528 flow [2023-11-17 16:07:43,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:07:43,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:07:43,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1411 transitions. [2023-11-17 16:07:43,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168498168498169 [2023-11-17 16:07:43,921 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1411 transitions. [2023-11-17 16:07:43,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1411 transitions. [2023-11-17 16:07:43,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:07:43,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1411 transitions. [2023-11-17 16:07:43,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 201.57142857142858) internal successors, (1411), 7 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:43,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:43,929 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:43,929 INFO L175 Difference]: Start difference. First operand has 72 places, 206 transitions, 1418 flow. Second operand 7 states and 1411 transitions. [2023-11-17 16:07:43,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 302 transitions, 2528 flow [2023-11-17 16:07:44,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 302 transitions, 2410 flow, removed 51 selfloop flow, removed 2 redundant places. [2023-11-17 16:07:44,135 INFO L231 Difference]: Finished difference. Result has 76 places, 242 transitions, 1962 flow [2023-11-17 16:07:44,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1962, PETRI_PLACES=76, PETRI_TRANSITIONS=242} [2023-11-17 16:07:44,136 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 10 predicate places. [2023-11-17 16:07:44,136 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 242 transitions, 1962 flow [2023-11-17 16:07:44,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 186.28571428571428) internal successors, (1304), 7 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:44,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:07:44,137 INFO L208 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] [2023-11-17 16:07:44,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 16:07:44,137 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-17 16:07:44,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:07:44,138 INFO L85 PathProgramCache]: Analyzing trace with hash 150043849, now seen corresponding path program 6 times [2023-11-17 16:07:44,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:07:44,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008180014] [2023-11-17 16:07:44,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:07:44,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:07:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:07:44,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:44,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:07:44,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008180014] [2023-11-17 16:07:44,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008180014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:07:44,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:07:44,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:07:44,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141884421] [2023-11-17 16:07:44,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:07:44,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:07:44,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:07:44,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:07:44,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:07:44,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 390 [2023-11-17 16:07:44,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 242 transitions, 1962 flow. Second operand has 7 states, 7 states have (on average 186.28571428571428) internal successors, (1304), 7 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:44,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:07:44,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 390 [2023-11-17 16:07:44,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:07:49,155 INFO L124 PetriNetUnfolderBase]: 52380/65931 cut-off events. [2023-11-17 16:07:49,155 INFO L125 PetriNetUnfolderBase]: For 111715/111715 co-relation queries the response was YES. [2023-11-17 16:07:49,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245513 conditions, 65931 events. 52380/65931 cut-off events. For 111715/111715 co-relation queries the response was YES. Maximal size of possible extension queue 1695. Compared 311315 event pairs, 18722 based on Foata normal form. 438/66369 useless extension candidates. Maximal degree in co-relation 71647. Up to 59726 conditions per place. [2023-11-17 16:07:49,499 INFO L140 encePairwiseOnDemand]: 376/390 looper letters, 140 selfloop transitions, 233 changer transitions 0/373 dead transitions. [2023-11-17 16:07:49,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 373 transitions, 3591 flow [2023-11-17 16:07:49,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:07:49,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:07:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1413 transitions. [2023-11-17 16:07:49,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175824175824176 [2023-11-17 16:07:49,504 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1413 transitions. [2023-11-17 16:07:49,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1413 transitions. [2023-11-17 16:07:49,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:07:49,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1413 transitions. [2023-11-17 16:07:49,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 201.85714285714286) internal successors, (1413), 7 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:49,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:49,512 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:49,512 INFO L175 Difference]: Start difference. First operand has 76 places, 242 transitions, 1962 flow. Second operand 7 states and 1413 transitions. [2023-11-17 16:07:49,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 373 transitions, 3591 flow [2023-11-17 16:07:49,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 373 transitions, 3324 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 16:07:49,669 INFO L231 Difference]: Finished difference. Result has 78 places, 306 transitions, 2833 flow [2023-11-17 16:07:49,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1759, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2833, PETRI_PLACES=78, PETRI_TRANSITIONS=306} [2023-11-17 16:07:49,670 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2023-11-17 16:07:49,671 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 306 transitions, 2833 flow [2023-11-17 16:07:49,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 186.28571428571428) internal successors, (1304), 7 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:49,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:07:49,671 INFO L208 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] [2023-11-17 16:07:49,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 16:07:49,672 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-17 16:07:49,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:07:49,672 INFO L85 PathProgramCache]: Analyzing trace with hash -79375673, now seen corresponding path program 7 times [2023-11-17 16:07:49,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:07:49,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686514035] [2023-11-17 16:07:49,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:07:49,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:07:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:07:49,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:49,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:07:49,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686514035] [2023-11-17 16:07:49,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686514035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:07:49,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:07:49,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:07:49,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288077370] [2023-11-17 16:07:49,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:07:49,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:07:49,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:07:49,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:07:49,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:07:49,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 390 [2023-11-17 16:07:49,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 306 transitions, 2833 flow. Second operand has 7 states, 7 states have (on average 186.28571428571428) internal successors, (1304), 7 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:49,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:07:49,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 390 [2023-11-17 16:07:49,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:07:54,614 INFO L124 PetriNetUnfolderBase]: 54823/69006 cut-off events. [2023-11-17 16:07:54,615 INFO L125 PetriNetUnfolderBase]: For 137915/137915 co-relation queries the response was YES. [2023-11-17 16:07:54,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261522 conditions, 69006 events. 54823/69006 cut-off events. For 137915/137915 co-relation queries the response was YES. Maximal size of possible extension queue 1812. Compared 328186 event pairs, 19706 based on Foata normal form. 656/69662 useless extension candidates. Maximal degree in co-relation 84560. Up to 61192 conditions per place. [2023-11-17 16:07:55,143 INFO L140 encePairwiseOnDemand]: 376/390 looper letters, 142 selfloop transitions, 331 changer transitions 0/473 dead transitions. [2023-11-17 16:07:55,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 473 transitions, 5128 flow [2023-11-17 16:07:55,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:07:55,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:07:55,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1415 transitions. [2023-11-17 16:07:55,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183150183150184 [2023-11-17 16:07:55,147 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1415 transitions. [2023-11-17 16:07:55,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1415 transitions. [2023-11-17 16:07:55,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:07:55,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1415 transitions. [2023-11-17 16:07:55,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 202.14285714285714) internal successors, (1415), 7 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:55,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:55,155 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:55,155 INFO L175 Difference]: Start difference. First operand has 78 places, 306 transitions, 2833 flow. Second operand 7 states and 1415 transitions. [2023-11-17 16:07:55,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 473 transitions, 5128 flow [2023-11-17 16:07:55,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 473 transitions, 4763 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 16:07:55,270 INFO L231 Difference]: Finished difference. Result has 80 places, 404 transitions, 4257 flow [2023-11-17 16:07:55,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=2566, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4257, PETRI_PLACES=80, PETRI_TRANSITIONS=404} [2023-11-17 16:07:55,271 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 14 predicate places. [2023-11-17 16:07:55,271 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 404 transitions, 4257 flow [2023-11-17 16:07:55,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 186.28571428571428) internal successors, (1304), 7 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:55,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:07:55,272 INFO L208 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] [2023-11-17 16:07:55,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 16:07:55,272 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-17 16:07:55,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:07:55,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1009396161, now seen corresponding path program 8 times [2023-11-17 16:07:55,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:07:55,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393798461] [2023-11-17 16:07:55,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:07:55,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:07:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:07:55,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:55,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:07:55,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393798461] [2023-11-17 16:07:55,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393798461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:07:55,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:07:55,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:07:55,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459200156] [2023-11-17 16:07:55,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:07:55,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:07:55,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:07:55,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:07:55,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:07:55,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 390 [2023-11-17 16:07:55,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 404 transitions, 4257 flow. Second operand has 7 states, 7 states have (on average 186.28571428571428) internal successors, (1304), 7 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:55,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:07:55,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 390 [2023-11-17 16:07:55,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:08:00,674 INFO L124 PetriNetUnfolderBase]: 57446/72413 cut-off events. [2023-11-17 16:08:00,674 INFO L125 PetriNetUnfolderBase]: For 183005/183005 co-relation queries the response was YES. [2023-11-17 16:08:00,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279181 conditions, 72413 events. 57446/72413 cut-off events. For 183005/183005 co-relation queries the response was YES. Maximal size of possible extension queue 1991. Compared 348635 event pairs, 20652 based on Foata normal form. 902/73315 useless extension candidates. Maximal degree in co-relation 102219. Up to 62710 conditions per place. [2023-11-17 16:08:01,076 INFO L140 encePairwiseOnDemand]: 376/390 looper letters, 144 selfloop transitions, 485 changer transitions 0/629 dead transitions. [2023-11-17 16:08:01,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 629 transitions, 7673 flow [2023-11-17 16:08:01,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:08:01,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:08:01,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1417 transitions. [2023-11-17 16:08:01,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190476190476191 [2023-11-17 16:08:01,080 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1417 transitions. [2023-11-17 16:08:01,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1417 transitions. [2023-11-17 16:08:01,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:08:01,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1417 transitions. [2023-11-17 16:08:01,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 202.42857142857142) internal successors, (1417), 7 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:01,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:01,087 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:01,087 INFO L175 Difference]: Start difference. First operand has 80 places, 404 transitions, 4257 flow. Second operand 7 states and 1417 transitions. [2023-11-17 16:08:01,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 629 transitions, 7673 flow [2023-11-17 16:08:01,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 629 transitions, 7154 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 16:08:01,249 INFO L231 Difference]: Finished difference. Result has 82 places, 558 transitions, 6633 flow [2023-11-17 16:08:01,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=3892, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=331, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6633, PETRI_PLACES=82, PETRI_TRANSITIONS=558} [2023-11-17 16:08:01,250 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 16 predicate places. [2023-11-17 16:08:01,250 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 558 transitions, 6633 flow [2023-11-17 16:08:01,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 186.28571428571428) internal successors, (1304), 7 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:01,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:08:01,252 INFO L208 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] [2023-11-17 16:08:01,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 16:08:01,253 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-17 16:08:01,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:08:01,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1866698065, now seen corresponding path program 9 times [2023-11-17 16:08:01,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:08:01,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664993560] [2023-11-17 16:08:01,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:08:01,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:08:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:08:01,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:08:01,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:08:01,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664993560] [2023-11-17 16:08:01,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664993560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:08:01,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:08:01,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:08:01,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437972830] [2023-11-17 16:08:01,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:08:01,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:08:01,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:08:01,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:08:01,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:08:01,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 390 [2023-11-17 16:08:01,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 558 transitions, 6633 flow. Second operand has 6 states, 6 states have (on average 187.33333333333334) internal successors, (1124), 6 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:01,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:08:01,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 390 [2023-11-17 16:08:01,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:08:07,624 INFO L124 PetriNetUnfolderBase]: 61901/78442 cut-off events. [2023-11-17 16:08:07,625 INFO L125 PetriNetUnfolderBase]: For 267759/267759 co-relation queries the response was YES. [2023-11-17 16:08:07,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307557 conditions, 78442 events. 61901/78442 cut-off events. For 267759/267759 co-relation queries the response was YES. Maximal size of possible extension queue 2317. Compared 389197 event pairs, 20958 based on Foata normal form. 1908/80350 useless extension candidates. Maximal degree in co-relation 130595. Up to 64560 conditions per place. [2023-11-17 16:08:08,060 INFO L140 encePairwiseOnDemand]: 376/390 looper letters, 148 selfloop transitions, 757 changer transitions 0/905 dead transitions. [2023-11-17 16:08:08,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 905 transitions, 12454 flow [2023-11-17 16:08:08,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:08:08,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:08:08,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1216 transitions. [2023-11-17 16:08:08,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196581196581197 [2023-11-17 16:08:08,063 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1216 transitions. [2023-11-17 16:08:08,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1216 transitions. [2023-11-17 16:08:08,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:08:08,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1216 transitions. [2023-11-17 16:08:08,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 202.66666666666666) internal successors, (1216), 6 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:08,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:08,068 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:08,068 INFO L175 Difference]: Start difference. First operand has 82 places, 558 transitions, 6633 flow. Second operand 6 states and 1216 transitions. [2023-11-17 16:08:08,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 905 transitions, 12454 flow [2023-11-17 16:08:08,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 905 transitions, 11657 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 16:08:08,311 INFO L231 Difference]: Finished difference. Result has 83 places, 836 transitions, 11111 flow [2023-11-17 16:08:08,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=6064, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=475, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11111, PETRI_PLACES=83, PETRI_TRANSITIONS=836} [2023-11-17 16:08:08,312 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2023-11-17 16:08:08,312 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 836 transitions, 11111 flow [2023-11-17 16:08:08,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.33333333333334) internal successors, (1124), 6 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:08,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:08:08,313 INFO L208 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] [2023-11-17 16:08:08,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 16:08:08,313 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-17 16:08:08,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:08:08,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1589404529, now seen corresponding path program 10 times [2023-11-17 16:08:08,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:08:08,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655686838] [2023-11-17 16:08:08,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:08:08,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:08:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:08:08,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:08:08,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:08:08,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655686838] [2023-11-17 16:08:08,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655686838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:08:08,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:08:08,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:08:08,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348277643] [2023-11-17 16:08:08,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:08:08,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:08:08,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:08:08,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:08:08,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:08:08,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 390 [2023-11-17 16:08:08,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 836 transitions, 11111 flow. Second operand has 6 states, 6 states have (on average 187.33333333333334) internal successors, (1124), 6 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:08,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:08:08,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 390 [2023-11-17 16:08:08,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand