/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-node-subst.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:41:22,698 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:41:22,775 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:41:22,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:41:22,781 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:41:22,781 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:41:22,782 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:41:22,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:41:22,811 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:41:22,814 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:41:22,815 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:41:22,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:41:22,816 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:41:22,817 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:41:22,817 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:41:22,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:41:22,817 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:41:22,817 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:41:22,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:41:22,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:41:22,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:41:22,818 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:41:22,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:41:22,819 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:41:22,819 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:41:22,820 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:41:22,820 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:41:22,821 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:41:22,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:41:22,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:41:22,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:41:22,822 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:41:22,822 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:41:22,823 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:41:22,823 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:41:22,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:41:22,823 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:41:22,823 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:41:22,823 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:41:22,823 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:41:22,823 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:41:22,824 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:41:23,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:41:23,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:41:23,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:41:23,076 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:41:23,076 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:41:23,077 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-node-subst.wvr_bound2.c [2023-08-03 19:41:24,235 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:41:24,460 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:41:24,461 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-node-subst.wvr_bound2.c [2023-08-03 19:41:24,470 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bb744b68/b0aa439cdb6b482ea9324215f92d59b1/FLAGbfeb06fab [2023-08-03 19:41:24,486 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bb744b68/b0aa439cdb6b482ea9324215f92d59b1 [2023-08-03 19:41:24,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:41:24,493 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:41:24,495 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:41:24,495 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:41:24,498 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:41:24,499 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:41:24" (1/1) ... [2023-08-03 19:41:24,500 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1288f32d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:24, skipping insertion in model container [2023-08-03 19:41:24,500 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:41:24" (1/1) ... [2023-08-03 19:41:24,536 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:41:24,702 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-node-subst.wvr_bound2.c[4239,4252] [2023-08-03 19:41:24,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:41:24,719 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:41:24,747 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-node-subst.wvr_bound2.c[4239,4252] [2023-08-03 19:41:24,752 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:41:24,765 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:41:24,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:24 WrapperNode [2023-08-03 19:41:24,765 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:41:24,766 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:41:24,766 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:41:24,766 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:41:24,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:24" (1/1) ... [2023-08-03 19:41:24,781 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:24" (1/1) ... [2023-08-03 19:41:24,816 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 479 [2023-08-03 19:41:24,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:41:24,818 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:41:24,818 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:41:24,818 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:41:24,831 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:24" (1/1) ... [2023-08-03 19:41:24,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:24" (1/1) ... [2023-08-03 19:41:24,837 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:24" (1/1) ... [2023-08-03 19:41:24,837 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:24" (1/1) ... [2023-08-03 19:41:24,850 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:24" (1/1) ... [2023-08-03 19:41:24,856 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:24" (1/1) ... [2023-08-03 19:41:24,859 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:24" (1/1) ... [2023-08-03 19:41:24,860 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:24" (1/1) ... [2023-08-03 19:41:24,866 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:41:24,867 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:41:24,867 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:41:24,867 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:41:24,884 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:24" (1/1) ... [2023-08-03 19:41:24,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:41:24,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:41:24,914 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) [2023-08-03 19:41:24,923 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 [2023-08-03 19:41:24,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:41:24,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:41:24,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:41:24,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:41:24,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:41:24,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:41:24,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:41:24,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:41:24,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 19:41:24,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 19:41:24,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:41:24,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 19:41:24,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:41:24,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:41:24,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:41:24,948 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 19:41:25,058 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:41:25,060 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:41:25,586 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:41:25,602 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:41:25,602 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-03 19:41:25,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:41:25 BoogieIcfgContainer [2023-08-03 19:41:25,605 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:41:25,607 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:41:25,607 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:41:25,610 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:41:25,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:41:24" (1/3) ... [2023-08-03 19:41:25,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa1e174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:41:25, skipping insertion in model container [2023-08-03 19:41:25,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:41:24" (2/3) ... [2023-08-03 19:41:25,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa1e174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:41:25, skipping insertion in model container [2023-08-03 19:41:25,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:41:25" (3/3) ... [2023-08-03 19:41:25,612 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-node-subst.wvr_bound2.c [2023-08-03 19:41:25,621 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:41:25,627 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:41:25,627 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:41:25,628 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:41:25,734 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 19:41:25,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 500 places, 549 transitions, 1140 flow [2023-08-03 19:41:26,169 INFO L124 PetriNetUnfolderBase]: 138/1169 cut-off events. [2023-08-03 19:41:26,169 INFO L125 PetriNetUnfolderBase]: For 36/57 co-relation queries the response was YES. [2023-08-03 19:41:26,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 1169 events. 138/1169 cut-off events. For 36/57 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5823 event pairs, 0 based on Foata normal form. 0/1021 useless extension candidates. Maximal degree in co-relation 742. Up to 16 conditions per place. [2023-08-03 19:41:26,189 INFO L82 GeneralOperation]: Start removeDead. Operand has 500 places, 549 transitions, 1140 flow [2023-08-03 19:41:26,204 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 500 places, 549 transitions, 1140 flow [2023-08-03 19:41:26,207 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:41:26,218 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 500 places, 549 transitions, 1140 flow [2023-08-03 19:41:26,223 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 500 places, 549 transitions, 1140 flow [2023-08-03 19:41:26,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 500 places, 549 transitions, 1140 flow [2023-08-03 19:41:26,513 INFO L124 PetriNetUnfolderBase]: 138/1169 cut-off events. [2023-08-03 19:41:26,514 INFO L125 PetriNetUnfolderBase]: For 36/57 co-relation queries the response was YES. [2023-08-03 19:41:26,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 1169 events. 138/1169 cut-off events. For 36/57 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5823 event pairs, 0 based on Foata normal form. 0/1021 useless extension candidates. Maximal degree in co-relation 742. Up to 16 conditions per place. [2023-08-03 19:41:26,567 INFO L119 LiptonReduction]: Number of co-enabled transitions 36000 [2023-08-03 19:41:42,820 INFO L134 LiptonReduction]: Checked pairs total: 57272 [2023-08-03 19:41:42,820 INFO L136 LiptonReduction]: Total number of compositions: 594 [2023-08-03 19:41:42,832 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:41:42,837 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@66076a01, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:41:42,838 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:41:42,844 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:41:42,844 INFO L124 PetriNetUnfolderBase]: 7/43 cut-off events. [2023-08-03 19:41:42,845 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:41:42,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:42,845 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:42,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:41:42,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:42,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1672508096, now seen corresponding path program 1 times [2023-08-03 19:41:42,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:42,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785089675] [2023-08-03 19:41:42,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:42,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 19:41:43,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:43,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785089675] [2023-08-03 19:41:43,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785089675] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:41:43,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:41:43,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:41:43,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28016144] [2023-08-03 19:41:43,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:41:43,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:41:43,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:43,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:41:43,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:41:43,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 489 out of 1143 [2023-08-03 19:41:43,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 77 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 492.3333333333333) internal successors, (1477), 3 states have internal predecessors, (1477), 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) [2023-08-03 19:41:43,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:43,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 489 of 1143 [2023-08-03 19:41:43,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:46,037 INFO L124 PetriNetUnfolderBase]: 23687/32506 cut-off events. [2023-08-03 19:41:46,038 INFO L125 PetriNetUnfolderBase]: For 1432/1432 co-relation queries the response was YES. [2023-08-03 19:41:46,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65277 conditions, 32506 events. 23687/32506 cut-off events. For 1432/1432 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 173012 event pairs, 17710 based on Foata normal form. 0/24252 useless extension candidates. Maximal degree in co-relation 57820. Up to 31814 conditions per place. [2023-08-03 19:41:46,213 INFO L140 encePairwiseOnDemand]: 1139/1143 looper letters, 69 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-03 19:41:46,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 77 transitions, 338 flow [2023-08-03 19:41:46,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:41:46,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:41:46,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1540 transitions. [2023-08-03 19:41:46,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44911052785068534 [2023-08-03 19:41:46,236 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1540 transitions. [2023-08-03 19:41:46,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1540 transitions. [2023-08-03 19:41:46,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:46,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1540 transitions. [2023-08-03 19:41:46,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 513.3333333333334) internal successors, (1540), 3 states have internal predecessors, (1540), 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) [2023-08-03 19:41:46,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1143.0) internal successors, (4572), 4 states have internal predecessors, (4572), 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) [2023-08-03 19:41:46,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1143.0) internal successors, (4572), 4 states have internal predecessors, (4572), 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) [2023-08-03 19:41:46,264 INFO L175 Difference]: Start difference. First operand has 63 places, 77 transitions, 196 flow. Second operand 3 states and 1540 transitions. [2023-08-03 19:41:46,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 77 transitions, 338 flow [2023-08-03 19:41:46,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 77 transitions, 338 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:41:46,296 INFO L231 Difference]: Finished difference. Result has 65 places, 77 transitions, 206 flow [2023-08-03 19:41:46,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1143, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=65, PETRI_TRANSITIONS=77} [2023-08-03 19:41:46,301 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 2 predicate places. [2023-08-03 19:41:46,301 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 77 transitions, 206 flow [2023-08-03 19:41:46,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 492.3333333333333) internal successors, (1477), 3 states have internal predecessors, (1477), 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) [2023-08-03 19:41:46,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:46,303 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:46,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:41:46,303 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:41:46,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:46,312 INFO L85 PathProgramCache]: Analyzing trace with hash 469510583, now seen corresponding path program 1 times [2023-08-03 19:41:46,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:46,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134012424] [2023-08-03 19:41:46,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:46,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 19:41:46,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:46,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134012424] [2023-08-03 19:41:46,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134012424] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:41:46,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:41:46,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:41:46,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790054615] [2023-08-03 19:41:46,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:41:46,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:41:46,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:46,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:41:46,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:41:46,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 487 out of 1143 [2023-08-03 19:41:46,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 77 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 489.75) internal successors, (1959), 4 states have internal predecessors, (1959), 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) [2023-08-03 19:41:46,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:46,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 487 of 1143 [2023-08-03 19:41:46,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:48,563 INFO L124 PetriNetUnfolderBase]: 23687/32507 cut-off events. [2023-08-03 19:41:48,563 INFO L125 PetriNetUnfolderBase]: For 1432/1432 co-relation queries the response was YES. [2023-08-03 19:41:48,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65286 conditions, 32507 events. 23687/32507 cut-off events. For 1432/1432 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 173051 event pairs, 17710 based on Foata normal form. 0/24253 useless extension candidates. Maximal degree in co-relation 65272. Up to 31813 conditions per place. [2023-08-03 19:41:48,799 INFO L140 encePairwiseOnDemand]: 1138/1143 looper letters, 68 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2023-08-03 19:41:48,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 352 flow [2023-08-03 19:41:48,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:41:48,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:41:48,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2021 transitions. [2023-08-03 19:41:48,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420384951881015 [2023-08-03 19:41:48,806 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2021 transitions. [2023-08-03 19:41:48,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2021 transitions. [2023-08-03 19:41:48,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:48,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2021 transitions. [2023-08-03 19:41:48,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.25) internal successors, (2021), 4 states have internal predecessors, (2021), 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) [2023-08-03 19:41:48,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1143.0) internal successors, (5715), 5 states have internal predecessors, (5715), 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) [2023-08-03 19:41:48,821 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1143.0) internal successors, (5715), 5 states have internal predecessors, (5715), 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) [2023-08-03 19:41:48,821 INFO L175 Difference]: Start difference. First operand has 65 places, 77 transitions, 206 flow. Second operand 4 states and 2021 transitions. [2023-08-03 19:41:48,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 78 transitions, 352 flow [2023-08-03 19:41:48,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 78 transitions, 348 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:41:48,837 INFO L231 Difference]: Finished difference. Result has 68 places, 78 transitions, 220 flow [2023-08-03 19:41:48,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1143, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=68, PETRI_TRANSITIONS=78} [2023-08-03 19:41:48,841 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 5 predicate places. [2023-08-03 19:41:48,845 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 78 transitions, 220 flow [2023-08-03 19:41:48,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 489.75) internal successors, (1959), 4 states have internal predecessors, (1959), 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) [2023-08-03 19:41:48,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:48,846 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:48,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:41:48,847 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:41:48,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:48,849 INFO L85 PathProgramCache]: Analyzing trace with hash -688796857, now seen corresponding path program 1 times [2023-08-03 19:41:48,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:48,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416864819] [2023-08-03 19:41:48,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:48,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:48,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 19:41:48,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:48,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416864819] [2023-08-03 19:41:48,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416864819] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:41:48,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:41:49,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:41:49,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364330134] [2023-08-03 19:41:49,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:41:49,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:41:49,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:49,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:41:49,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:41:49,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 487 out of 1143 [2023-08-03 19:41:49,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 78 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 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) [2023-08-03 19:41:49,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:49,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 487 of 1143 [2023-08-03 19:41:49,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:51,204 INFO L124 PetriNetUnfolderBase]: 23687/32495 cut-off events. [2023-08-03 19:41:51,204 INFO L125 PetriNetUnfolderBase]: For 1406/1406 co-relation queries the response was YES. [2023-08-03 19:41:51,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65269 conditions, 32495 events. 23687/32495 cut-off events. For 1406/1406 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 172848 event pairs, 17710 based on Foata normal form. 0/24242 useless extension candidates. Maximal degree in co-relation 65246. Up to 31815 conditions per place. [2023-08-03 19:41:51,382 INFO L140 encePairwiseOnDemand]: 1139/1143 looper letters, 70 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2023-08-03 19:41:51,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 79 transitions, 368 flow [2023-08-03 19:41:51,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:41:51,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:41:51,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2020 transitions. [2023-08-03 19:41:51,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44181977252843396 [2023-08-03 19:41:51,390 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2020 transitions. [2023-08-03 19:41:51,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2020 transitions. [2023-08-03 19:41:51,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:51,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2020 transitions. [2023-08-03 19:41:51,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 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) [2023-08-03 19:41:51,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1143.0) internal successors, (5715), 5 states have internal predecessors, (5715), 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) [2023-08-03 19:41:51,404 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1143.0) internal successors, (5715), 5 states have internal predecessors, (5715), 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) [2023-08-03 19:41:51,404 INFO L175 Difference]: Start difference. First operand has 68 places, 78 transitions, 220 flow. Second operand 4 states and 2020 transitions. [2023-08-03 19:41:51,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 79 transitions, 368 flow [2023-08-03 19:41:51,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 79 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:41:51,417 INFO L231 Difference]: Finished difference. Result has 71 places, 79 transitions, 233 flow [2023-08-03 19:41:51,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1143, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=233, PETRI_PLACES=71, PETRI_TRANSITIONS=79} [2023-08-03 19:41:51,419 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 8 predicate places. [2023-08-03 19:41:51,421 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 79 transitions, 233 flow [2023-08-03 19:41:51,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 490.0) internal successors, (1960), 4 states have internal predecessors, (1960), 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) [2023-08-03 19:41:51,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:51,423 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:51,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 19:41:51,423 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:41:51,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:51,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1074058110, now seen corresponding path program 1 times [2023-08-03 19:41:51,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:51,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99992076] [2023-08-03 19:41:51,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:51,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:51,641 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 19:41:51,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:51,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99992076] [2023-08-03 19:41:51,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99992076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:41:51,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:41:51,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:41:51,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260086011] [2023-08-03 19:41:51,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:41:51,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:41:51,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:51,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:41:51,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:41:51,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 487 out of 1143 [2023-08-03 19:41:51,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 79 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 490.25) internal successors, (1961), 4 states have internal predecessors, (1961), 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) [2023-08-03 19:41:51,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:51,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 487 of 1143 [2023-08-03 19:41:51,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:53,610 INFO L124 PetriNetUnfolderBase]: 23687/32496 cut-off events. [2023-08-03 19:41:53,610 INFO L125 PetriNetUnfolderBase]: For 1407/1407 co-relation queries the response was YES. [2023-08-03 19:41:53,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65278 conditions, 32496 events. 23687/32496 cut-off events. For 1407/1407 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 172755 event pairs, 17710 based on Foata normal form. 0/24244 useless extension candidates. Maximal degree in co-relation 65253. Up to 31816 conditions per place. [2023-08-03 19:41:53,898 INFO L140 encePairwiseOnDemand]: 1139/1143 looper letters, 71 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2023-08-03 19:41:53,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 80 transitions, 383 flow [2023-08-03 19:41:53,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:41:53,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:41:53,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2020 transitions. [2023-08-03 19:41:53,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44181977252843396 [2023-08-03 19:41:53,904 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2020 transitions. [2023-08-03 19:41:53,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2020 transitions. [2023-08-03 19:41:53,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:53,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2020 transitions. [2023-08-03 19:41:53,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 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) [2023-08-03 19:41:53,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1143.0) internal successors, (5715), 5 states have internal predecessors, (5715), 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) [2023-08-03 19:41:53,920 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1143.0) internal successors, (5715), 5 states have internal predecessors, (5715), 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) [2023-08-03 19:41:53,920 INFO L175 Difference]: Start difference. First operand has 71 places, 79 transitions, 233 flow. Second operand 4 states and 2020 transitions. [2023-08-03 19:41:53,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 80 transitions, 383 flow [2023-08-03 19:41:53,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 80 transitions, 377 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 19:41:53,933 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 241 flow [2023-08-03 19:41:53,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1143, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2023-08-03 19:41:53,936 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 10 predicate places. [2023-08-03 19:41:53,936 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 241 flow [2023-08-03 19:41:53,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 490.25) internal successors, (1961), 4 states have internal predecessors, (1961), 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) [2023-08-03 19:41:53,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:53,937 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:53,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 19:41:53,937 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:41:53,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:53,938 INFO L85 PathProgramCache]: Analyzing trace with hash -374925094, now seen corresponding path program 1 times [2023-08-03 19:41:53,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:53,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928257706] [2023-08-03 19:41:53,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:53,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:54,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:41:54,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:54,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928257706] [2023-08-03 19:41:54,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928257706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:41:54,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:41:54,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:41:54,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381415780] [2023-08-03 19:41:54,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:41:54,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:41:54,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:54,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:41:54,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 19:41:54,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 487 out of 1143 [2023-08-03 19:41:54,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 490.5) internal successors, (1962), 4 states have internal predecessors, (1962), 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) [2023-08-03 19:41:54,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:54,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 487 of 1143 [2023-08-03 19:41:54,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:56,075 INFO L124 PetriNetUnfolderBase]: 23687/32497 cut-off events. [2023-08-03 19:41:56,075 INFO L125 PetriNetUnfolderBase]: For 1409/1409 co-relation queries the response was YES. [2023-08-03 19:41:56,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65284 conditions, 32497 events. 23687/32497 cut-off events. For 1409/1409 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 172793 event pairs, 17710 based on Foata normal form. 0/24246 useless extension candidates. Maximal degree in co-relation 65258. Up to 31817 conditions per place. [2023-08-03 19:41:56,387 INFO L140 encePairwiseOnDemand]: 1139/1143 looper letters, 72 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2023-08-03 19:41:56,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 81 transitions, 393 flow [2023-08-03 19:41:56,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:41:56,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:41:56,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2020 transitions. [2023-08-03 19:41:56,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44181977252843396 [2023-08-03 19:41:56,392 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2020 transitions. [2023-08-03 19:41:56,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2020 transitions. [2023-08-03 19:41:56,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:56,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2020 transitions. [2023-08-03 19:41:56,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 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) [2023-08-03 19:41:56,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1143.0) internal successors, (5715), 5 states have internal predecessors, (5715), 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) [2023-08-03 19:41:56,404 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1143.0) internal successors, (5715), 5 states have internal predecessors, (5715), 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) [2023-08-03 19:41:56,405 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 241 flow. Second operand 4 states and 2020 transitions. [2023-08-03 19:41:56,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 81 transitions, 393 flow [2023-08-03 19:41:56,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 387 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 19:41:56,419 INFO L231 Difference]: Finished difference. Result has 75 places, 81 transitions, 249 flow [2023-08-03 19:41:56,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1143, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=249, PETRI_PLACES=75, PETRI_TRANSITIONS=81} [2023-08-03 19:41:56,421 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2023-08-03 19:41:56,421 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 81 transitions, 249 flow [2023-08-03 19:41:56,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 490.5) internal successors, (1962), 4 states have internal predecessors, (1962), 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) [2023-08-03 19:41:56,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:56,422 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:56,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 19:41:56,423 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:41:56,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:56,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1066124489, now seen corresponding path program 1 times [2023-08-03 19:41:56,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:56,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558271880] [2023-08-03 19:41:56,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:56,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:41:56,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:56,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558271880] [2023-08-03 19:41:56,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558271880] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:41:56,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724460768] [2023-08-03 19:41:56,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:56,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:41:56,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:41:56,624 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:41:56,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 19:41:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:56,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-03 19:41:56,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:41:56,817 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 19:41:56,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:41:56,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724460768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:41:56,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:41:56,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-08-03 19:41:56,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409237220] [2023-08-03 19:41:56,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:41:56,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 19:41:56,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:56,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 19:41:56,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-03 19:41:56,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 487 out of 1143 [2023-08-03 19:41:56,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 81 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 490.75) internal successors, (1963), 4 states have internal predecessors, (1963), 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) [2023-08-03 19:41:56,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:56,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 487 of 1143 [2023-08-03 19:41:56,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:58,890 INFO L124 PetriNetUnfolderBase]: 23687/32498 cut-off events. [2023-08-03 19:41:58,891 INFO L125 PetriNetUnfolderBase]: For 1410/1410 co-relation queries the response was YES. [2023-08-03 19:41:58,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65290 conditions, 32498 events. 23687/32498 cut-off events. For 1410/1410 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 172784 event pairs, 17710 based on Foata normal form. 0/24248 useless extension candidates. Maximal degree in co-relation 65263. Up to 31818 conditions per place. [2023-08-03 19:41:59,063 INFO L140 encePairwiseOnDemand]: 1139/1143 looper letters, 73 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2023-08-03 19:41:59,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 82 transitions, 403 flow [2023-08-03 19:41:59,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:41:59,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:41:59,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2020 transitions. [2023-08-03 19:41:59,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44181977252843396 [2023-08-03 19:41:59,069 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2020 transitions. [2023-08-03 19:41:59,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2020 transitions. [2023-08-03 19:41:59,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:59,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2020 transitions. [2023-08-03 19:41:59,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 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) [2023-08-03 19:41:59,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1143.0) internal successors, (5715), 5 states have internal predecessors, (5715), 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) [2023-08-03 19:41:59,083 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1143.0) internal successors, (5715), 5 states have internal predecessors, (5715), 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) [2023-08-03 19:41:59,083 INFO L175 Difference]: Start difference. First operand has 75 places, 81 transitions, 249 flow. Second operand 4 states and 2020 transitions. [2023-08-03 19:41:59,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 82 transitions, 403 flow [2023-08-03 19:41:59,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 82 transitions, 397 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 19:41:59,098 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 257 flow [2023-08-03 19:41:59,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1143, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=257, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2023-08-03 19:41:59,101 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 14 predicate places. [2023-08-03 19:41:59,101 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 257 flow [2023-08-03 19:41:59,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 490.75) internal successors, (1963), 4 states have internal predecessors, (1963), 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) [2023-08-03 19:41:59,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:59,102 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:59,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 19:41:59,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-03 19:41:59,311 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:41:59,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:59,312 INFO L85 PathProgramCache]: Analyzing trace with hash -771235384, now seen corresponding path program 1 times [2023-08-03 19:41:59,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:59,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954754764] [2023-08-03 19:41:59,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:59,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:41:59,413 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:41:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:41:59,491 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:41:59,491 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:41:59,492 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 19:41:59,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 19:41:59,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:41:59,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:41:59,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 19:41:59,495 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:59,498 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:41:59,498 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:41:59,569 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 19:41:59,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 641 places, 705 transitions, 1500 flow [2023-08-03 19:42:00,771 INFO L124 PetriNetUnfolderBase]: 966/5380 cut-off events. [2023-08-03 19:42:00,772 INFO L125 PetriNetUnfolderBase]: For 602/737 co-relation queries the response was YES. [2023-08-03 19:42:00,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6054 conditions, 5380 events. 966/5380 cut-off events. For 602/737 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 46932 event pairs, 22 based on Foata normal form. 0/4649 useless extension candidates. Maximal degree in co-relation 3352. Up to 192 conditions per place. [2023-08-03 19:42:00,885 INFO L82 GeneralOperation]: Start removeDead. Operand has 641 places, 705 transitions, 1500 flow [2023-08-03 19:42:00,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 641 places, 705 transitions, 1500 flow [2023-08-03 19:42:00,935 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:42:00,935 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 641 places, 705 transitions, 1500 flow [2023-08-03 19:42:00,936 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 641 places, 705 transitions, 1500 flow [2023-08-03 19:42:00,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 641 places, 705 transitions, 1500 flow [2023-08-03 19:42:02,022 INFO L124 PetriNetUnfolderBase]: 966/5380 cut-off events. [2023-08-03 19:42:02,022 INFO L125 PetriNetUnfolderBase]: For 602/737 co-relation queries the response was YES. [2023-08-03 19:42:02,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6054 conditions, 5380 events. 966/5380 cut-off events. For 602/737 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 46932 event pairs, 22 based on Foata normal form. 0/4649 useless extension candidates. Maximal degree in co-relation 3352. Up to 192 conditions per place. [2023-08-03 19:42:02,374 INFO L119 LiptonReduction]: Number of co-enabled transitions 119520 [2023-08-03 19:42:18,314 INFO L134 LiptonReduction]: Checked pairs total: 261996 [2023-08-03 19:42:18,314 INFO L136 LiptonReduction]: Total number of compositions: 732 [2023-08-03 19:42:18,316 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:42:18,316 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@66076a01, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:42:18,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:42:18,320 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:42:18,320 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2023-08-03 19:42:18,320 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 19:42:18,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:42:18,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:42:18,321 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 1 more)] === [2023-08-03 19:42:18,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:42:18,321 INFO L85 PathProgramCache]: Analyzing trace with hash 106706296, now seen corresponding path program 1 times [2023-08-03 19:42:18,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:42:18,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951041075] [2023-08-03 19:42:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:42:18,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:42:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:42:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:42:18,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:42:18,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951041075] [2023-08-03 19:42:18,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951041075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:42:18,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:42:18,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:42:18,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638819118] [2023-08-03 19:42:18,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:42:18,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:42:18,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:42:18,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:42:18,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:42:18,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 635 out of 1437 [2023-08-03 19:42:18,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 141 transitions, 372 flow. Second operand has 3 states, 3 states have (on average 639.3333333333334) internal successors, (1918), 3 states have internal predecessors, (1918), 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) [2023-08-03 19:42:18,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:42:18,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 635 of 1437 [2023-08-03 19:42:18,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand