/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-match-subst.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:39:28,491 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:39:28,554 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:39:28,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:39:28,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:39:28,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:39:28,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:39:28,581 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:39:28,581 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:39:28,584 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:39:28,584 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:39:28,585 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:39:28,585 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:39:28,586 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:39:28,586 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:39:28,586 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:39:28,586 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:39:28,587 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:39:28,587 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:39:28,587 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:39:28,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:39:28,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:39:28,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:39:28,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:39:28,588 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:39:28,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:39:28,589 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:39:28,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:39:28,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:39:28,589 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:39:28,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:39:28,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:39:28,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:39:28,590 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:39:28,591 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:39:28,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:39:28,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:39:28,591 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:39:28,591 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:39:28,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:39:28,591 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:39:28,591 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:39:28,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:39:28,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:39:28,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:39:28,799 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:39:28,799 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:39:28,800 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-match-subst.wvr_bound2.c [2023-08-03 19:39:29,749 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:39:29,856 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:39:29,856 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-match-subst.wvr_bound2.c [2023-08-03 19:39:29,861 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c561edf3f/153f73d65301478a8432d10f0798ef54/FLAG93578f65f [2023-08-03 19:39:29,870 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c561edf3f/153f73d65301478a8432d10f0798ef54 [2023-08-03 19:39:29,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:39:29,873 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:39:29,873 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:39:29,873 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:39:29,875 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:39:29,876 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:39:29" (1/1) ... [2023-08-03 19:39:29,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10075a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:29, skipping insertion in model container [2023-08-03 19:39:29,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:39:29" (1/1) ... [2023-08-03 19:39:29,891 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:39:29,992 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-match-subst.wvr_bound2.c[3260,3273] [2023-08-03 19:39:29,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:39:30,000 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:39:30,018 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-match-subst.wvr_bound2.c[3260,3273] [2023-08-03 19:39:30,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:39:30,032 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:39:30,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:30 WrapperNode [2023-08-03 19:39:30,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:39:30,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:39:30,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:39:30,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:39:30,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:30" (1/1) ... [2023-08-03 19:39:30,045 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:30" (1/1) ... [2023-08-03 19:39:30,067 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 263 [2023-08-03 19:39:30,068 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:39:30,068 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:39:30,068 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:39:30,068 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:39:30,073 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:30" (1/1) ... [2023-08-03 19:39:30,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:30" (1/1) ... [2023-08-03 19:39:30,076 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:30" (1/1) ... [2023-08-03 19:39:30,076 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:30" (1/1) ... [2023-08-03 19:39:30,082 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:30" (1/1) ... [2023-08-03 19:39:30,085 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:30" (1/1) ... [2023-08-03 19:39:30,087 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:30" (1/1) ... [2023-08-03 19:39:30,088 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:30" (1/1) ... [2023-08-03 19:39:30,090 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:39:30,091 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:39:30,091 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:39:30,091 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:39:30,091 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:30" (1/1) ... [2023-08-03 19:39:30,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:39:30,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:39:30,134 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 19:39:30,145 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 19:39:30,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:39:30,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:39:30,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:39:30,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:39:30,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:39:30,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 19:39:30,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 19:39:30,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:39:30,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:39:30,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:39:30,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:39:30,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:39:30,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:39:30,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:39:30,171 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 19:39:30,238 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:39:30,240 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:39:30,527 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:39:30,538 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:39:30,538 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-03 19:39:30,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:39:30 BoogieIcfgContainer [2023-08-03 19:39:30,540 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:39:30,542 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:39:30,542 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:39:30,544 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:39:30,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:39:29" (1/3) ... [2023-08-03 19:39:30,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd823b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:39:30, skipping insertion in model container [2023-08-03 19:39:30,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:39:30" (2/3) ... [2023-08-03 19:39:30,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd823b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:39:30, skipping insertion in model container [2023-08-03 19:39:30,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:39:30" (3/3) ... [2023-08-03 19:39:30,546 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-match-subst.wvr_bound2.c [2023-08-03 19:39:30,551 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:39:30,558 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:39:30,558 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:39:30,558 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:39:30,643 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 19:39:30,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 281 places, 303 transitions, 648 flow [2023-08-03 19:39:30,866 INFO L124 PetriNetUnfolderBase]: 118/961 cut-off events. [2023-08-03 19:39:30,867 INFO L125 PetriNetUnfolderBase]: For 36/72 co-relation queries the response was YES. [2023-08-03 19:39:30,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 961 events. 118/961 cut-off events. For 36/72 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5605 event pairs, 0 based on Foata normal form. 0/818 useless extension candidates. Maximal degree in co-relation 493. Up to 16 conditions per place. [2023-08-03 19:39:30,884 INFO L82 GeneralOperation]: Start removeDead. Operand has 281 places, 303 transitions, 648 flow [2023-08-03 19:39:30,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 281 places, 303 transitions, 648 flow [2023-08-03 19:39:30,901 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:39:30,911 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 281 places, 303 transitions, 648 flow [2023-08-03 19:39:30,914 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 281 places, 303 transitions, 648 flow [2023-08-03 19:39:30,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 281 places, 303 transitions, 648 flow [2023-08-03 19:39:31,016 INFO L124 PetriNetUnfolderBase]: 118/961 cut-off events. [2023-08-03 19:39:31,017 INFO L125 PetriNetUnfolderBase]: For 36/72 co-relation queries the response was YES. [2023-08-03 19:39:31,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 961 events. 118/961 cut-off events. For 36/72 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5605 event pairs, 0 based on Foata normal form. 0/818 useless extension candidates. Maximal degree in co-relation 493. Up to 16 conditions per place. [2023-08-03 19:39:31,054 INFO L119 LiptonReduction]: Number of co-enabled transitions 36660 [2023-08-03 19:39:37,207 INFO L134 LiptonReduction]: Checked pairs total: 38222 [2023-08-03 19:39:37,208 INFO L136 LiptonReduction]: Total number of compositions: 325 [2023-08-03 19:39:37,220 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:39:37,225 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;@3f01dc03, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:39:37,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:39:37,231 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:39:37,231 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2023-08-03 19:39:37,231 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:39:37,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:39:37,232 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:39:37,232 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:39:37,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:39:37,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1457795504, now seen corresponding path program 1 times [2023-08-03 19:39:37,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:39:37,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714991484] [2023-08-03 19:39:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:37,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:39:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:39:37,355 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:39:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:39:37,406 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:39:37,408 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:39:37,408 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 19:39:37,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 19:39:37,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:39:37,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:39:37,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:39:37,411 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 19:39:37,414 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:39:37,414 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:39:37,473 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 19:39:37,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 419 places, 456 transitions, 1002 flow [2023-08-03 19:39:38,652 INFO L124 PetriNetUnfolderBase]: 1002/5489 cut-off events. [2023-08-03 19:39:38,652 INFO L125 PetriNetUnfolderBase]: For 602/926 co-relation queries the response was YES. [2023-08-03 19:39:38,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6163 conditions, 5489 events. 1002/5489 cut-off events. For 602/926 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 48189 event pairs, 26 based on Foata normal form. 0/4611 useless extension candidates. Maximal degree in co-relation 3278. Up to 192 conditions per place. [2023-08-03 19:39:38,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 419 places, 456 transitions, 1002 flow [2023-08-03 19:39:38,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 419 places, 456 transitions, 1002 flow [2023-08-03 19:39:38,787 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:39:38,788 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 419 places, 456 transitions, 1002 flow [2023-08-03 19:39:38,788 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 419 places, 456 transitions, 1002 flow [2023-08-03 19:39:38,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 419 places, 456 transitions, 1002 flow [2023-08-03 19:39:39,832 INFO L124 PetriNetUnfolderBase]: 1002/5489 cut-off events. [2023-08-03 19:39:39,832 INFO L125 PetriNetUnfolderBase]: For 602/926 co-relation queries the response was YES. [2023-08-03 19:39:39,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6163 conditions, 5489 events. 1002/5489 cut-off events. For 602/926 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 48189 event pairs, 26 based on Foata normal form. 0/4611 useless extension candidates. Maximal degree in co-relation 3278. Up to 192 conditions per place. [2023-08-03 19:39:40,106 INFO L119 LiptonReduction]: Number of co-enabled transitions 119004 [2023-08-03 19:39:48,467 INFO L134 LiptonReduction]: Checked pairs total: 136016 [2023-08-03 19:39:48,467 INFO L136 LiptonReduction]: Total number of compositions: 512 [2023-08-03 19:39:48,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:39:48,469 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;@3f01dc03, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:39:48,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:39:48,472 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:39:48,472 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2023-08-03 19:39:48,472 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 19:39:48,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:39:48,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:39:48,482 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 19:39:48,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:39:48,482 INFO L85 PathProgramCache]: Analyzing trace with hash -899919627, now seen corresponding path program 1 times [2023-08-03 19:39:48,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:39:48,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954535226] [2023-08-03 19:39:48,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:48,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:39:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:39:48,576 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 19:39:48,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:39:48,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954535226] [2023-08-03 19:39:48,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954535226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:39:48,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:39:48,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:39:48,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960782495] [2023-08-03 19:39:48,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:39:48,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:39:48,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:39:48,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:39:48,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:39:48,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 395 out of 968 [2023-08-03 19:39:48,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 397.3333333333333) internal successors, (1192), 3 states have internal predecessors, (1192), 0 states have call successors, (0), 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 19:39:48,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:39:48,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 395 of 968 [2023-08-03 19:39:48,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:39:51,715 INFO L124 PetriNetUnfolderBase]: 21389/32665 cut-off events. [2023-08-03 19:39:51,715 INFO L125 PetriNetUnfolderBase]: For 7142/7142 co-relation queries the response was YES. [2023-08-03 19:39:51,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67783 conditions, 32665 events. 21389/32665 cut-off events. For 7142/7142 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 213570 event pairs, 14517 based on Foata normal form. 729/30827 useless extension candidates. Maximal degree in co-relation 27370. Up to 30193 conditions per place. [2023-08-03 19:39:51,879 INFO L140 encePairwiseOnDemand]: 963/968 looper letters, 51 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-03 19:39:51,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 322 flow [2023-08-03 19:39:51,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:39:51,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:39:51,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1241 transitions. [2023-08-03 19:39:51,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273415977961432 [2023-08-03 19:39:51,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1241 transitions. [2023-08-03 19:39:51,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1241 transitions. [2023-08-03 19:39:51,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:39:51,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1241 transitions. [2023-08-03 19:39:51,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 413.6666666666667) internal successors, (1241), 3 states have internal predecessors, (1241), 0 states have call successors, (0), 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 19:39:51,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 968.0) internal successors, (3872), 4 states have internal predecessors, (3872), 0 states have call successors, (0), 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 19:39:51,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 968.0) internal successors, (3872), 4 states have internal predecessors, (3872), 0 states have call successors, (0), 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 19:39:51,915 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 214 flow. Second operand 3 states and 1241 transitions. [2023-08-03 19:39:51,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 322 flow [2023-08-03 19:39:51,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 322 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:39:51,935 INFO L231 Difference]: Finished difference. Result has 58 places, 61 transitions, 222 flow [2023-08-03 19:39:51,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=58, PETRI_TRANSITIONS=61} [2023-08-03 19:39:51,939 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-08-03 19:39:51,939 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 61 transitions, 222 flow [2023-08-03 19:39:51,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 397.3333333333333) internal successors, (1192), 3 states have internal predecessors, (1192), 0 states have call successors, (0), 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 19:39:51,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:39:51,941 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:39:51,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:39:51,942 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 19:39:51,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:39:51,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1254717073, now seen corresponding path program 1 times [2023-08-03 19:39:51,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:39:51,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528677295] [2023-08-03 19:39:51,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:51,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:39:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:39:52,077 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:39:52,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:39:52,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528677295] [2023-08-03 19:39:52,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528677295] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:39:52,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393133231] [2023-08-03 19:39:52,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:52,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:39:52,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:39:52,084 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 19:39:52,086 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 19:39:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:39:52,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:39:52,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:39:52,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:39:52,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:39:52,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393133231] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:39:52,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:39:52,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:39:52,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36648322] [2023-08-03 19:39:52,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:39:52,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:39:52,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:39:52,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:39:52,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:39:52,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 968 [2023-08-03 19:39:52,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 61 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 395.6) internal successors, (1978), 5 states have internal predecessors, (1978), 0 states have call successors, (0), 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 19:39:52,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:39:52,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 968 [2023-08-03 19:39:52,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:39:55,121 INFO L124 PetriNetUnfolderBase]: 21385/32657 cut-off events. [2023-08-03 19:39:55,122 INFO L125 PetriNetUnfolderBase]: For 7136/7136 co-relation queries the response was YES. [2023-08-03 19:39:55,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67780 conditions, 32657 events. 21385/32657 cut-off events. For 7136/7136 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 213823 event pairs, 11616 based on Foata normal form. 4/30102 useless extension candidates. Maximal degree in co-relation 40955. Up to 30172 conditions per place. [2023-08-03 19:39:55,237 INFO L140 encePairwiseOnDemand]: 964/968 looper letters, 52 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2023-08-03 19:39:55,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 65 transitions, 340 flow [2023-08-03 19:39:55,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:39:55,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:39:55,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2027 transitions. [2023-08-03 19:39:55,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418801652892562 [2023-08-03 19:39:55,241 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2027 transitions. [2023-08-03 19:39:55,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2027 transitions. [2023-08-03 19:39:55,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:39:55,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2027 transitions. [2023-08-03 19:39:55,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 405.4) internal successors, (2027), 5 states have internal predecessors, (2027), 0 states have call successors, (0), 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 19:39:55,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 968.0) internal successors, (5808), 6 states have internal predecessors, (5808), 0 states have call successors, (0), 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 19:39:55,252 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 968.0) internal successors, (5808), 6 states have internal predecessors, (5808), 0 states have call successors, (0), 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 19:39:55,252 INFO L175 Difference]: Start difference. First operand has 58 places, 61 transitions, 222 flow. Second operand 5 states and 2027 transitions. [2023-08-03 19:39:55,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 65 transitions, 340 flow [2023-08-03 19:39:55,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 330 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:39:55,259 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 227 flow [2023-08-03 19:39:55,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2023-08-03 19:39:55,260 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2023-08-03 19:39:55,260 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 227 flow [2023-08-03 19:39:55,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 395.6) internal successors, (1978), 5 states have internal predecessors, (1978), 0 states have call successors, (0), 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 19:39:55,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:39:55,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:39:55,266 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 19:39:55,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:39:55,467 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 1 more)] === [2023-08-03 19:39:55,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:39:55,467 INFO L85 PathProgramCache]: Analyzing trace with hash 327898731, now seen corresponding path program 1 times [2023-08-03 19:39:55,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:39:55,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219321680] [2023-08-03 19:39:55,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:55,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:39:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:39:55,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:39:55,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:39:55,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219321680] [2023-08-03 19:39:55,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219321680] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:39:55,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767028017] [2023-08-03 19:39:55,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:55,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:39:55,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:39:55,554 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:39:55,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 19:39:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:39:55,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:39:55,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:39:55,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:39:55,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:39:55,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767028017] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:39:55,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:39:55,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:39:55,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959522215] [2023-08-03 19:39:55,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:39:55,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:39:55,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:39:55,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:39:55,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:39:55,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 395 out of 968 [2023-08-03 19:39:55,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 398.6666666666667) internal successors, (1196), 3 states have internal predecessors, (1196), 0 states have call successors, (0), 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 19:39:55,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:39:55,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 395 of 968 [2023-08-03 19:39:55,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:39:58,722 INFO L124 PetriNetUnfolderBase]: 21171/32347 cut-off events. [2023-08-03 19:39:58,722 INFO L125 PetriNetUnfolderBase]: For 5863/5863 co-relation queries the response was YES. [2023-08-03 19:39:58,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66402 conditions, 32347 events. 21171/32347 cut-off events. For 5863/5863 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 212773 event pairs, 14440 based on Foata normal form. 0/29860 useless extension candidates. Maximal degree in co-relation 28930. Up to 29811 conditions per place. [2023-08-03 19:39:58,876 INFO L140 encePairwiseOnDemand]: 965/968 looper letters, 54 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-08-03 19:39:58,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 351 flow [2023-08-03 19:39:58,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:39:58,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:39:58,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1241 transitions. [2023-08-03 19:39:58,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273415977961432 [2023-08-03 19:39:58,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1241 transitions. [2023-08-03 19:39:58,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1241 transitions. [2023-08-03 19:39:58,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:39:58,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1241 transitions. [2023-08-03 19:39:58,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 413.6666666666667) internal successors, (1241), 3 states have internal predecessors, (1241), 0 states have call successors, (0), 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 19:39:58,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 968.0) internal successors, (3872), 4 states have internal predecessors, (3872), 0 states have call successors, (0), 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 19:39:58,888 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 968.0) internal successors, (3872), 4 states have internal predecessors, (3872), 0 states have call successors, (0), 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 19:39:58,888 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 227 flow. Second operand 3 states and 1241 transitions. [2023-08-03 19:39:58,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 351 flow [2023-08-03 19:39:58,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 344 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:39:58,894 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 235 flow [2023-08-03 19:39:58,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2023-08-03 19:39:58,896 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2023-08-03 19:39:58,896 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 235 flow [2023-08-03 19:39:58,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 398.6666666666667) internal successors, (1196), 3 states have internal predecessors, (1196), 0 states have call successors, (0), 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 19:39:58,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:39:58,897 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:39:58,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 19:39:59,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 19:39:59,109 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:39:59,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:39:59,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1198738112, now seen corresponding path program 1 times [2023-08-03 19:39:59,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:39:59,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071306091] [2023-08-03 19:39:59,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:59,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:39:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:39:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:39:59,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:39:59,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071306091] [2023-08-03 19:39:59,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071306091] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:39:59,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600349213] [2023-08-03 19:39:59,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:59,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:39:59,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:39:59,161 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:39:59,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 19:39:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:39:59,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:39:59,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:39:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:39:59,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:39:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:39:59,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600349213] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:39:59,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:39:59,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:39:59,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620699770] [2023-08-03 19:39:59,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:39:59,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:39:59,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:39:59,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:39:59,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:39:59,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 968 [2023-08-03 19:39:59,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 396.6) internal successors, (1983), 5 states have internal predecessors, (1983), 0 states have call successors, (0), 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 19:39:59,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:39:59,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 968 [2023-08-03 19:39:59,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:02,176 INFO L124 PetriNetUnfolderBase]: 20579/31345 cut-off events. [2023-08-03 19:40:02,177 INFO L125 PetriNetUnfolderBase]: For 5665/5665 co-relation queries the response was YES. [2023-08-03 19:40:02,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64410 conditions, 31345 events. 20579/31345 cut-off events. For 5665/5665 co-relation queries the response was YES. Maximal size of possible extension queue 851. Compared 203539 event pairs, 11374 based on Foata normal form. 2/28992 useless extension candidates. Maximal degree in co-relation 24983. Up to 28967 conditions per place. [2023-08-03 19:40:02,356 INFO L140 encePairwiseOnDemand]: 965/968 looper letters, 53 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2023-08-03 19:40:02,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 65 transitions, 348 flow [2023-08-03 19:40:02,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:40:02,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:40:02,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1632 transitions. [2023-08-03 19:40:02,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4214876033057851 [2023-08-03 19:40:02,361 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1632 transitions. [2023-08-03 19:40:02,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1632 transitions. [2023-08-03 19:40:02,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:02,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1632 transitions. [2023-08-03 19:40:02,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 0 states have call successors, (0), 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 19:40:02,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 968.0) internal successors, (4840), 5 states have internal predecessors, (4840), 0 states have call successors, (0), 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 19:40:02,370 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 968.0) internal successors, (4840), 5 states have internal predecessors, (4840), 0 states have call successors, (0), 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 19:40:02,370 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 235 flow. Second operand 4 states and 1632 transitions. [2023-08-03 19:40:02,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 65 transitions, 348 flow [2023-08-03 19:40:02,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 65 transitions, 346 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:40:02,376 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 230 flow [2023-08-03 19:40:02,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2023-08-03 19:40:02,376 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2023-08-03 19:40:02,377 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 230 flow [2023-08-03 19:40:02,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 396.6) internal successors, (1983), 5 states have internal predecessors, (1983), 0 states have call successors, (0), 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 19:40:02,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:02,378 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:02,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 19:40:02,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:02,584 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:40:02,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:02,585 INFO L85 PathProgramCache]: Analyzing trace with hash -314461962, now seen corresponding path program 1 times [2023-08-03 19:40:02,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:02,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520070494] [2023-08-03 19:40:02,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:02,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:02,630 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:40:02,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:02,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520070494] [2023-08-03 19:40:02,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520070494] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:02,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021275079] [2023-08-03 19:40:02,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:02,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:02,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:02,632 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:02,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 19:40:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:02,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:40:02,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:40:02,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:40:02,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021275079] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:40:02,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:40:02,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:40:02,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725252498] [2023-08-03 19:40:02,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:40:02,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:40:02,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:02,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:40:02,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:40:02,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 968 [2023-08-03 19:40:02,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 230 flow. Second operand has 5 states, 5 states have (on average 396.6) internal successors, (1983), 5 states have internal predecessors, (1983), 0 states have call successors, (0), 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 19:40:02,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:02,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 968 [2023-08-03 19:40:02,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:05,375 INFO L124 PetriNetUnfolderBase]: 20547/31289 cut-off events. [2023-08-03 19:40:05,376 INFO L125 PetriNetUnfolderBase]: For 5645/5645 co-relation queries the response was YES. [2023-08-03 19:40:05,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64289 conditions, 31289 events. 20547/31289 cut-off events. For 5645/5645 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 203703 event pairs, 5780 based on Foata normal form. 16/28950 useless extension candidates. Maximal degree in co-relation 39309. Up to 28798 conditions per place. [2023-08-03 19:40:05,589 INFO L140 encePairwiseOnDemand]: 964/968 looper letters, 59 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-08-03 19:40:05,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 374 flow [2023-08-03 19:40:05,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:40:05,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:40:05,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2033 transitions. [2023-08-03 19:40:05,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4200413223140496 [2023-08-03 19:40:05,593 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2033 transitions. [2023-08-03 19:40:05,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2033 transitions. [2023-08-03 19:40:05,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:05,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2033 transitions. [2023-08-03 19:40:05,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 406.6) internal successors, (2033), 5 states have internal predecessors, (2033), 0 states have call successors, (0), 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 19:40:05,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 968.0) internal successors, (5808), 6 states have internal predecessors, (5808), 0 states have call successors, (0), 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 19:40:05,603 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 968.0) internal successors, (5808), 6 states have internal predecessors, (5808), 0 states have call successors, (0), 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 19:40:05,603 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 230 flow. Second operand 5 states and 2033 transitions. [2023-08-03 19:40:05,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 71 transitions, 374 flow [2023-08-03 19:40:05,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 71 transitions, 360 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:40:05,610 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 231 flow [2023-08-03 19:40:05,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2023-08-03 19:40:05,611 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2023-08-03 19:40:05,611 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 231 flow [2023-08-03 19:40:05,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 396.6) internal successors, (1983), 5 states have internal predecessors, (1983), 0 states have call successors, (0), 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 19:40:05,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:05,612 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:05,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-03 19:40:05,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:05,816 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 1 more)] === [2023-08-03 19:40:05,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:05,816 INFO L85 PathProgramCache]: Analyzing trace with hash -193811034, now seen corresponding path program 1 times [2023-08-03 19:40:05,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:05,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553923722] [2023-08-03 19:40:05,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:05,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:05,868 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 19:40:05,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:05,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553923722] [2023-08-03 19:40:05,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553923722] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:05,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732732416] [2023-08-03 19:40:05,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:05,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:05,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:05,877 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:05,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 19:40:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:05,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:40:05,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:05,960 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 19:40:05,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:40:05,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732732416] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:40:05,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:40:05,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:40:05,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755511372] [2023-08-03 19:40:05,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:40:05,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:40:05,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:05,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:40:05,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:05,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 395 out of 968 [2023-08-03 19:40:05,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 0 states have call successors, (0), 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 19:40:05,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:05,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 395 of 968 [2023-08-03 19:40:05,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:08,471 INFO L124 PetriNetUnfolderBase]: 20523/31769 cut-off events. [2023-08-03 19:40:08,472 INFO L125 PetriNetUnfolderBase]: For 3626/3626 co-relation queries the response was YES. [2023-08-03 19:40:08,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64090 conditions, 31769 events. 20523/31769 cut-off events. For 3626/3626 co-relation queries the response was YES. Maximal size of possible extension queue 959. Compared 213521 event pairs, 14176 based on Foata normal form. 0/29438 useless extension candidates. Maximal degree in co-relation 39199. Up to 28639 conditions per place. [2023-08-03 19:40:08,614 INFO L140 encePairwiseOnDemand]: 965/968 looper letters, 57 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-08-03 19:40:08,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 365 flow [2023-08-03 19:40:08,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:40:08,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:40:08,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1243 transitions. [2023-08-03 19:40:08,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2023-08-03 19:40:08,633 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1243 transitions. [2023-08-03 19:40:08,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1243 transitions. [2023-08-03 19:40:08,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:08,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1243 transitions. [2023-08-03 19:40:08,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 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 19:40:08,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 968.0) internal successors, (3872), 4 states have internal predecessors, (3872), 0 states have call successors, (0), 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 19:40:08,654 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 968.0) internal successors, (3872), 4 states have internal predecessors, (3872), 0 states have call successors, (0), 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 19:40:08,654 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 231 flow. Second operand 3 states and 1243 transitions. [2023-08-03 19:40:08,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 365 flow [2023-08-03 19:40:08,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 68 transitions, 358 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:40:08,658 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 239 flow [2023-08-03 19:40:08,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=239, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2023-08-03 19:40:08,660 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2023-08-03 19:40:08,660 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 239 flow [2023-08-03 19:40:08,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 0 states have call successors, (0), 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 19:40:08,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:08,660 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:08,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 19:40:08,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:08,861 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:40:08,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:08,861 INFO L85 PathProgramCache]: Analyzing trace with hash -685946359, now seen corresponding path program 1 times [2023-08-03 19:40:08,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:08,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736008550] [2023-08-03 19:40:08,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:08,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:08,907 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:40:08,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:08,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736008550] [2023-08-03 19:40:08,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736008550] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:08,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568285361] [2023-08-03 19:40:08,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:08,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:08,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:08,917 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:08,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 19:40:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:08,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:40:08,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:09,003 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:40:09,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:40:09,014 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:40:09,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568285361] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:40:09,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:40:09,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:40:09,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433897860] [2023-08-03 19:40:09,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:40:09,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:40:09,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:09,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:40:09,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:09,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 968 [2023-08-03 19:40:09,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 239 flow. Second operand has 5 states, 5 states have (on average 397.6) internal successors, (1988), 5 states have internal predecessors, (1988), 0 states have call successors, (0), 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 19:40:09,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:09,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 968 [2023-08-03 19:40:09,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:11,419 INFO L124 PetriNetUnfolderBase]: 20139/31185 cut-off events. [2023-08-03 19:40:11,420 INFO L125 PetriNetUnfolderBase]: For 3462/3462 co-relation queries the response was YES. [2023-08-03 19:40:11,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63063 conditions, 31185 events. 20139/31185 cut-off events. For 3462/3462 co-relation queries the response was YES. Maximal size of possible extension queue 848. Compared 208233 event pairs, 11426 based on Foata normal form. 8/29006 useless extension candidates. Maximal degree in co-relation 38765. Up to 28255 conditions per place. [2023-08-03 19:40:11,532 INFO L140 encePairwiseOnDemand]: 965/968 looper letters, 58 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-08-03 19:40:11,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 69 transitions, 370 flow [2023-08-03 19:40:11,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:40:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:40:11,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1636 transitions. [2023-08-03 19:40:11,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225206611570248 [2023-08-03 19:40:11,550 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1636 transitions. [2023-08-03 19:40:11,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1636 transitions. [2023-08-03 19:40:11,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:11,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1636 transitions. [2023-08-03 19:40:11,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 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 19:40:11,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 968.0) internal successors, (4840), 5 states have internal predecessors, (4840), 0 states have call successors, (0), 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 19:40:11,563 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 968.0) internal successors, (4840), 5 states have internal predecessors, (4840), 0 states have call successors, (0), 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 19:40:11,563 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 239 flow. Second operand 4 states and 1636 transitions. [2023-08-03 19:40:11,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 69 transitions, 370 flow [2023-08-03 19:40:11,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:40:11,567 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 234 flow [2023-08-03 19:40:11,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-08-03 19:40:11,583 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2023-08-03 19:40:11,583 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 234 flow [2023-08-03 19:40:11,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 397.6) internal successors, (1988), 5 states have internal predecessors, (1988), 0 states have call successors, (0), 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 19:40:11,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:11,584 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:11,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-03 19:40:11,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:11,784 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:40:11,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:11,785 INFO L85 PathProgramCache]: Analyzing trace with hash -84282279, now seen corresponding path program 1 times [2023-08-03 19:40:11,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:11,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734602549] [2023-08-03 19:40:11,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:11,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:11,832 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:40:11,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:11,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734602549] [2023-08-03 19:40:11,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734602549] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:11,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127692333] [2023-08-03 19:40:11,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:11,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:11,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:11,853 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:11,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 19:40:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:12,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:40:12,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:12,043 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:40:12,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:40:12,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127692333] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:40:12,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:40:12,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:40:12,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858240132] [2023-08-03 19:40:12,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:40:12,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:40:12,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:12,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:40:12,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:40:12,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 968 [2023-08-03 19:40:12,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 397.6) internal successors, (1988), 5 states have internal predecessors, (1988), 0 states have call successors, (0), 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 19:40:12,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:12,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 968 [2023-08-03 19:40:12,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:14,391 INFO L124 PetriNetUnfolderBase]: 19947/30897 cut-off events. [2023-08-03 19:40:14,391 INFO L125 PetriNetUnfolderBase]: For 3298/3298 co-relation queries the response was YES. [2023-08-03 19:40:14,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62451 conditions, 30897 events. 19947/30897 cut-off events. For 3298/3298 co-relation queries the response was YES. Maximal size of possible extension queue 848. Compared 206193 event pairs, 686 based on Foata normal form. 64/28774 useless extension candidates. Maximal degree in co-relation 38491. Up to 27286 conditions per place. [2023-08-03 19:40:14,622 INFO L140 encePairwiseOnDemand]: 964/968 looper letters, 66 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2023-08-03 19:40:14,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 77 transitions, 404 flow [2023-08-03 19:40:14,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:40:14,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:40:14,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2039 transitions. [2023-08-03 19:40:14,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212809917355372 [2023-08-03 19:40:14,625 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2039 transitions. [2023-08-03 19:40:14,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2039 transitions. [2023-08-03 19:40:14,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:14,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2039 transitions. [2023-08-03 19:40:14,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 407.8) internal successors, (2039), 5 states have internal predecessors, (2039), 0 states have call successors, (0), 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 19:40:14,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 968.0) internal successors, (5808), 6 states have internal predecessors, (5808), 0 states have call successors, (0), 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 19:40:14,632 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 968.0) internal successors, (5808), 6 states have internal predecessors, (5808), 0 states have call successors, (0), 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 19:40:14,632 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 234 flow. Second operand 5 states and 2039 transitions. [2023-08-03 19:40:14,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 77 transitions, 404 flow [2023-08-03 19:40:14,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 77 transitions, 390 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:40:14,641 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 235 flow [2023-08-03 19:40:14,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-08-03 19:40:14,641 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2023-08-03 19:40:14,641 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 235 flow [2023-08-03 19:40:14,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 397.6) internal successors, (1988), 5 states have internal predecessors, (1988), 0 states have call successors, (0), 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 19:40:14,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:14,642 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:14,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-03 19:40:14,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:14,847 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 1 more)] === [2023-08-03 19:40:14,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:14,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2007609218, now seen corresponding path program 1 times [2023-08-03 19:40:14,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:14,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353204281] [2023-08-03 19:40:14,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:14,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:14,885 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:40:14,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:14,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353204281] [2023-08-03 19:40:14,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353204281] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:14,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643257160] [2023-08-03 19:40:14,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:14,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:14,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:14,901 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:14,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 19:40:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:14,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:40:14,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:40:14,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:40:14,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643257160] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:40:14,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:40:14,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:40:14,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977649898] [2023-08-03 19:40:14,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:40:14,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:40:14,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:15,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:40:15,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:15,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 395 out of 968 [2023-08-03 19:40:15,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 401.3333333333333) internal successors, (1204), 3 states have internal predecessors, (1204), 0 states have call successors, (0), 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 19:40:15,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:15,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 395 of 968 [2023-08-03 19:40:15,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:17,128 INFO L124 PetriNetUnfolderBase]: 17819/27777 cut-off events. [2023-08-03 19:40:17,128 INFO L125 PetriNetUnfolderBase]: For 3061/3061 co-relation queries the response was YES. [2023-08-03 19:40:17,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55999 conditions, 27777 events. 17819/27777 cut-off events. For 3061/3061 co-relation queries the response was YES. Maximal size of possible extension queue 986. Compared 183857 event pairs, 13419 based on Foata normal form. 0/25782 useless extension candidates. Maximal degree in co-relation 35159. Up to 23711 conditions per place. [2023-08-03 19:40:17,264 INFO L140 encePairwiseOnDemand]: 965/968 looper letters, 65 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-08-03 19:40:17,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 411 flow [2023-08-03 19:40:17,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:40:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:40:17,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1250 transitions. [2023-08-03 19:40:17,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43044077134986225 [2023-08-03 19:40:17,266 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1250 transitions. [2023-08-03 19:40:17,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1250 transitions. [2023-08-03 19:40:17,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:17,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1250 transitions. [2023-08-03 19:40:17,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 416.6666666666667) internal successors, (1250), 3 states have internal predecessors, (1250), 0 states have call successors, (0), 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 19:40:17,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 968.0) internal successors, (3872), 4 states have internal predecessors, (3872), 0 states have call successors, (0), 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 19:40:17,270 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 968.0) internal successors, (3872), 4 states have internal predecessors, (3872), 0 states have call successors, (0), 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 19:40:17,270 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 235 flow. Second operand 3 states and 1250 transitions. [2023-08-03 19:40:17,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 75 transitions, 411 flow [2023-08-03 19:40:17,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 404 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:40:17,274 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 243 flow [2023-08-03 19:40:17,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-08-03 19:40:17,275 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2023-08-03 19:40:17,275 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 243 flow [2023-08-03 19:40:17,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 401.3333333333333) internal successors, (1204), 3 states have internal predecessors, (1204), 0 states have call successors, (0), 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 19:40:17,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:17,275 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:17,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-03 19:40:17,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-03 19:40:17,480 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 1 more)] === [2023-08-03 19:40:17,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:17,480 INFO L85 PathProgramCache]: Analyzing trace with hash -368636324, now seen corresponding path program 1 times [2023-08-03 19:40:17,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:17,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831716562] [2023-08-03 19:40:17,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:17,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:40:17,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:17,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831716562] [2023-08-03 19:40:17,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831716562] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:17,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209341712] [2023-08-03 19:40:17,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:17,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:17,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:17,522 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:17,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 19:40:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:17,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:40:17,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:17,609 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:40:17,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:40:17,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209341712] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:40:17,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:40:17,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:40:17,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439543723] [2023-08-03 19:40:17,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:40:17,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:40:17,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:17,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:40:17,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:17,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 395 out of 968 [2023-08-03 19:40:17,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 402.6666666666667) internal successors, (1208), 3 states have internal predecessors, (1208), 0 states have call successors, (0), 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 19:40:17,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:17,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 395 of 968 [2023-08-03 19:40:17,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:19,725 INFO L124 PetriNetUnfolderBase]: 17130/27060 cut-off events. [2023-08-03 19:40:19,726 INFO L125 PetriNetUnfolderBase]: For 4055/4055 co-relation queries the response was YES. [2023-08-03 19:40:19,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56584 conditions, 27060 events. 17130/27060 cut-off events. For 4055/4055 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 182690 event pairs, 11236 based on Foata normal form. 0/26114 useless extension candidates. Maximal degree in co-relation 36662. Up to 18927 conditions per place. [2023-08-03 19:40:19,818 INFO L140 encePairwiseOnDemand]: 965/968 looper letters, 67 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-03 19:40:19,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 76 transitions, 421 flow [2023-08-03 19:40:19,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:40:19,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:40:19,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1250 transitions. [2023-08-03 19:40:19,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43044077134986225 [2023-08-03 19:40:19,821 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1250 transitions. [2023-08-03 19:40:19,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1250 transitions. [2023-08-03 19:40:19,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:19,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1250 transitions. [2023-08-03 19:40:19,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 416.6666666666667) internal successors, (1250), 3 states have internal predecessors, (1250), 0 states have call successors, (0), 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 19:40:19,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 968.0) internal successors, (3872), 4 states have internal predecessors, (3872), 0 states have call successors, (0), 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 19:40:19,825 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 968.0) internal successors, (3872), 4 states have internal predecessors, (3872), 0 states have call successors, (0), 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 19:40:19,825 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 243 flow. Second operand 3 states and 1250 transitions. [2023-08-03 19:40:19,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 76 transitions, 421 flow [2023-08-03 19:40:19,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 418 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:40:19,831 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 252 flow [2023-08-03 19:40:19,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2023-08-03 19:40:19,831 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2023-08-03 19:40:19,831 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 252 flow [2023-08-03 19:40:19,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 402.6666666666667) internal successors, (1208), 3 states have internal predecessors, (1208), 0 states have call successors, (0), 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 19:40:19,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:19,832 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:19,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 19:40:20,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:20,036 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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 19:40:20,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:20,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1087064203, now seen corresponding path program 1 times [2023-08-03 19:40:20,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:20,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139874958] [2023-08-03 19:40:20,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:20,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:20,106 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:40:20,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:20,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139874958] [2023-08-03 19:40:20,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139874958] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:20,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921368019] [2023-08-03 19:40:20,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:20,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:20,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:20,121 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:20,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 19:40:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:20,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:40:20,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:40:20,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:40:20,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921368019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:40:20,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:40:20,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:40:20,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602285808] [2023-08-03 19:40:20,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:40:20,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:40:20,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:20,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:40:20,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:20,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 395 out of 968 [2023-08-03 19:40:20,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 404.0) internal successors, (1212), 3 states have internal predecessors, (1212), 0 states have call successors, (0), 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 19:40:20,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:20,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 395 of 968 [2023-08-03 19:40:20,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:22,350 INFO L124 PetriNetUnfolderBase]: 16921/26743 cut-off events. [2023-08-03 19:40:22,350 INFO L125 PetriNetUnfolderBase]: For 5291/5291 co-relation queries the response was YES. [2023-08-03 19:40:22,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58316 conditions, 26743 events. 16921/26743 cut-off events. For 5291/5291 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 178209 event pairs, 12627 based on Foata normal form. 0/26510 useless extension candidates. Maximal degree in co-relation 38391. Up to 21081 conditions per place. [2023-08-03 19:40:22,565 INFO L140 encePairwiseOnDemand]: 965/968 looper letters, 68 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-03 19:40:22,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 77 transitions, 432 flow [2023-08-03 19:40:22,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:40:22,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:40:22,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1250 transitions. [2023-08-03 19:40:22,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43044077134986225 [2023-08-03 19:40:22,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1250 transitions. [2023-08-03 19:40:22,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1250 transitions. [2023-08-03 19:40:22,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:22,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1250 transitions. [2023-08-03 19:40:22,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 416.6666666666667) internal successors, (1250), 3 states have internal predecessors, (1250), 0 states have call successors, (0), 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 19:40:22,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 968.0) internal successors, (3872), 4 states have internal predecessors, (3872), 0 states have call successors, (0), 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 19:40:22,571 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 968.0) internal successors, (3872), 4 states have internal predecessors, (3872), 0 states have call successors, (0), 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 19:40:22,571 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 252 flow. Second operand 3 states and 1250 transitions. [2023-08-03 19:40:22,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 77 transitions, 432 flow [2023-08-03 19:40:22,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:40:22,678 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 262 flow [2023-08-03 19:40:22,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2023-08-03 19:40:22,679 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2023-08-03 19:40:22,679 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 262 flow [2023-08-03 19:40:22,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 404.0) internal successors, (1212), 3 states have internal predecessors, (1212), 0 states have call successors, (0), 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 19:40:22,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:22,679 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:22,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 19:40:22,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-03 19:40:22,884 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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 19:40:22,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:22,885 INFO L85 PathProgramCache]: Analyzing trace with hash 14227281, now seen corresponding path program 1 times [2023-08-03 19:40:22,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:22,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776513524] [2023-08-03 19:40:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:22,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:40:22,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:22,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776513524] [2023-08-03 19:40:22,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776513524] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:22,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768999572] [2023-08-03 19:40:22,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:22,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:22,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:22,945 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:23,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 19:40:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:23,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:40:23,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:23,115 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:40:23,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:40:23,125 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:40:23,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768999572] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:40:23,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:40:23,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:40:23,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009511683] [2023-08-03 19:40:23,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:40:23,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:40:23,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:23,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:40:23,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:23,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 968 [2023-08-03 19:40:23,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 262 flow. Second operand has 5 states, 5 states have (on average 401.0) internal successors, (2005), 5 states have internal predecessors, (2005), 0 states have call successors, (0), 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 19:40:23,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:23,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 968 [2023-08-03 19:40:23,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:25,262 INFO L124 PetriNetUnfolderBase]: 16521/26119 cut-off events. [2023-08-03 19:40:25,262 INFO L125 PetriNetUnfolderBase]: For 5005/5005 co-relation queries the response was YES. [2023-08-03 19:40:25,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57697 conditions, 26119 events. 16521/26119 cut-off events. For 5005/5005 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 172535 event pairs, 9695 based on Foata normal form. 32/26151 useless extension candidates. Maximal degree in co-relation 42454. Up to 23507 conditions per place. [2023-08-03 19:40:25,471 INFO L140 encePairwiseOnDemand]: 965/968 looper letters, 65 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-08-03 19:40:25,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 75 transitions, 416 flow [2023-08-03 19:40:25,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:40:25,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:40:25,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1640 transitions. [2023-08-03 19:40:25,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42355371900826444 [2023-08-03 19:40:25,474 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1640 transitions. [2023-08-03 19:40:25,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1640 transitions. [2023-08-03 19:40:25,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:25,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1640 transitions. [2023-08-03 19:40:25,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 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 19:40:25,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 968.0) internal successors, (4840), 5 states have internal predecessors, (4840), 0 states have call successors, (0), 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 19:40:25,480 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 968.0) internal successors, (4840), 5 states have internal predecessors, (4840), 0 states have call successors, (0), 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 19:40:25,480 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 262 flow. Second operand 4 states and 1640 transitions. [2023-08-03 19:40:25,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 75 transitions, 416 flow [2023-08-03 19:40:25,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 75 transitions, 414 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:40:25,742 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 258 flow [2023-08-03 19:40:25,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2023-08-03 19:40:25,743 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2023-08-03 19:40:25,743 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 258 flow [2023-08-03 19:40:25,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 401.0) internal successors, (2005), 5 states have internal predecessors, (2005), 0 states have call successors, (0), 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 19:40:25,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:25,743 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:25,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 19:40:25,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 19:40:25,948 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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 19:40:25,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:25,948 INFO L85 PathProgramCache]: Analyzing trace with hash -217826854, now seen corresponding path program 1 times [2023-08-03 19:40:25,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:25,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883499320] [2023-08-03 19:40:25,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:25,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:40:26,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:26,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883499320] [2023-08-03 19:40:26,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883499320] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:26,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705142024] [2023-08-03 19:40:26,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:26,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:26,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:26,037 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:26,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 19:40:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:26,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:40:26,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:26,179 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:40:26,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:40:26,189 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:40:26,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705142024] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:40:26,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:40:26,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:40:26,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962956089] [2023-08-03 19:40:26,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:40:26,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:40:26,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:26,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:40:26,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:26,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 968 [2023-08-03 19:40:26,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 401.2) internal successors, (2006), 5 states have internal predecessors, (2006), 0 states have call successors, (0), 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 19:40:26,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:26,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 968 [2023-08-03 19:40:26,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:27,553 INFO L124 PetriNetUnfolderBase]: 10381/16595 cut-off events. [2023-08-03 19:40:27,554 INFO L125 PetriNetUnfolderBase]: For 3568/3568 co-relation queries the response was YES. [2023-08-03 19:40:27,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36824 conditions, 16595 events. 10381/16595 cut-off events. For 3568/3568 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 101003 event pairs, 5440 based on Foata normal form. 192/16787 useless extension candidates. Maximal degree in co-relation 31654. Up to 9564 conditions per place. [2023-08-03 19:40:27,681 INFO L140 encePairwiseOnDemand]: 964/968 looper letters, 72 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-08-03 19:40:27,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 83 transitions, 462 flow [2023-08-03 19:40:27,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:40:27,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:40:27,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1648 transitions. [2023-08-03 19:40:27,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4256198347107438 [2023-08-03 19:40:27,684 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1648 transitions. [2023-08-03 19:40:27,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1648 transitions. [2023-08-03 19:40:27,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:27,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1648 transitions. [2023-08-03 19:40:27,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 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 19:40:27,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 968.0) internal successors, (4840), 5 states have internal predecessors, (4840), 0 states have call successors, (0), 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 19:40:27,690 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 968.0) internal successors, (4840), 5 states have internal predecessors, (4840), 0 states have call successors, (0), 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 19:40:27,690 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 258 flow. Second operand 4 states and 1648 transitions. [2023-08-03 19:40:27,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 83 transitions, 462 flow [2023-08-03 19:40:27,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 83 transitions, 456 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:40:27,765 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 272 flow [2023-08-03 19:40:27,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=272, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2023-08-03 19:40:27,765 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2023-08-03 19:40:27,765 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 272 flow [2023-08-03 19:40:27,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 401.2) internal successors, (2006), 5 states have internal predecessors, (2006), 0 states have call successors, (0), 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 19:40:27,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:27,766 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:27,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 19:40:27,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-03 19:40:27,971 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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 19:40:27,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:27,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1451810930, now seen corresponding path program 1 times [2023-08-03 19:40:27,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:27,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697332186] [2023-08-03 19:40:27,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:27,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:28,035 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:40:28,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:28,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697332186] [2023-08-03 19:40:28,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697332186] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:28,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523878143] [2023-08-03 19:40:28,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:28,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:28,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:28,037 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:28,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-03 19:40:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:28,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:40:28,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:28,169 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:40:28,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:40:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:40:28,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523878143] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:40:28,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:40:28,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:40:28,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017815812] [2023-08-03 19:40:28,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:40:28,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:40:28,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:28,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:40:28,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:28,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 968 [2023-08-03 19:40:28,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 272 flow. Second operand has 5 states, 5 states have (on average 401.6) internal successors, (2008), 5 states have internal predecessors, (2008), 0 states have call successors, (0), 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 19:40:28,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:28,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 968 [2023-08-03 19:40:28,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:29,418 INFO L124 PetriNetUnfolderBase]: 9421/14944 cut-off events. [2023-08-03 19:40:29,418 INFO L125 PetriNetUnfolderBase]: For 6527/6527 co-relation queries the response was YES. [2023-08-03 19:40:29,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35882 conditions, 14944 events. 9421/14944 cut-off events. For 6527/6527 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 88210 event pairs, 5948 based on Foata normal form. 233/15177 useless extension candidates. Maximal degree in co-relation 34761. Up to 8751 conditions per place. [2023-08-03 19:40:29,471 INFO L140 encePairwiseOnDemand]: 964/968 looper letters, 73 selfloop transitions, 4 changer transitions 0/84 dead transitions. [2023-08-03 19:40:29,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 84 transitions, 478 flow [2023-08-03 19:40:29,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:40:29,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:40:29,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1648 transitions. [2023-08-03 19:40:29,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4256198347107438 [2023-08-03 19:40:29,474 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1648 transitions. [2023-08-03 19:40:29,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1648 transitions. [2023-08-03 19:40:29,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:29,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1648 transitions. [2023-08-03 19:40:29,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 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 19:40:29,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 968.0) internal successors, (4840), 5 states have internal predecessors, (4840), 0 states have call successors, (0), 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 19:40:29,479 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 968.0) internal successors, (4840), 5 states have internal predecessors, (4840), 0 states have call successors, (0), 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 19:40:29,479 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 272 flow. Second operand 4 states and 1648 transitions. [2023-08-03 19:40:29,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 84 transitions, 478 flow [2023-08-03 19:40:29,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 474 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:40:29,538 INFO L231 Difference]: Finished difference. Result has 79 places, 65 transitions, 288 flow [2023-08-03 19:40:29,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=79, PETRI_TRANSITIONS=65} [2023-08-03 19:40:29,538 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2023-08-03 19:40:29,538 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 65 transitions, 288 flow [2023-08-03 19:40:29,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 401.6) internal successors, (2008), 5 states have internal predecessors, (2008), 0 states have call successors, (0), 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 19:40:29,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:29,539 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:29,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-03 19:40:29,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 19:40:29,743 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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 19:40:29,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:29,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1125716234, now seen corresponding path program 1 times [2023-08-03 19:40:29,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:29,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768402195] [2023-08-03 19:40:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:29,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:40:29,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:29,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768402195] [2023-08-03 19:40:29,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768402195] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:29,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730639181] [2023-08-03 19:40:29,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:29,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:29,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:29,817 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:29,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-03 19:40:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:29,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:40:29,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:29,943 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:40:29,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:40:29,952 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:40:29,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730639181] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:40:29,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:40:29,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:40:29,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118682626] [2023-08-03 19:40:29,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:40:29,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:40:29,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:29,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:40:29,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:40:29,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 394 out of 968 [2023-08-03 19:40:29,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 65 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 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 19:40:29,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:29,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 394 of 968 [2023-08-03 19:40:29,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:31,201 INFO L124 PetriNetUnfolderBase]: 9409/14897 cut-off events. [2023-08-03 19:40:31,201 INFO L125 PetriNetUnfolderBase]: For 7481/7481 co-relation queries the response was YES. [2023-08-03 19:40:31,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37503 conditions, 14897 events. 9409/14897 cut-off events. For 7481/7481 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 87842 event pairs, 8414 based on Foata normal form. 13/14910 useless extension candidates. Maximal degree in co-relation 36401. Up to 13454 conditions per place. [2023-08-03 19:40:31,264 INFO L140 encePairwiseOnDemand]: 964/968 looper letters, 72 selfloop transitions, 3 changer transitions 3/85 dead transitions. [2023-08-03 19:40:31,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 85 transitions, 496 flow [2023-08-03 19:40:31,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:40:31,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:40:31,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1648 transitions. [2023-08-03 19:40:31,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4256198347107438 [2023-08-03 19:40:31,267 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1648 transitions. [2023-08-03 19:40:31,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1648 transitions. [2023-08-03 19:40:31,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:31,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1648 transitions. [2023-08-03 19:40:31,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 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 19:40:31,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 968.0) internal successors, (4840), 5 states have internal predecessors, (4840), 0 states have call successors, (0), 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 19:40:31,271 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 968.0) internal successors, (4840), 5 states have internal predecessors, (4840), 0 states have call successors, (0), 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 19:40:31,271 INFO L175 Difference]: Start difference. First operand has 79 places, 65 transitions, 288 flow. Second operand 4 states and 1648 transitions. [2023-08-03 19:40:31,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 85 transitions, 496 flow [2023-08-03 19:40:31,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 85 transitions, 492 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:40:31,418 INFO L231 Difference]: Finished difference. Result has 83 places, 63 transitions, 286 flow [2023-08-03 19:40:31,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=83, PETRI_TRANSITIONS=63} [2023-08-03 19:40:31,418 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2023-08-03 19:40:31,418 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 63 transitions, 286 flow [2023-08-03 19:40:31,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 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 19:40:31,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:31,419 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:31,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-03 19:40:31,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:31,623 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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 19:40:31,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:31,623 INFO L85 PathProgramCache]: Analyzing trace with hash 642497316, now seen corresponding path program 1 times [2023-08-03 19:40:31,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:31,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051880114] [2023-08-03 19:40:31,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:31,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:33,148 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:40:33,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:33,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051880114] [2023-08-03 19:40:33,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051880114] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:33,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589013900] [2023-08-03 19:40:33,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:33,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:33,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:33,150 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:33,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-03 19:40:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:33,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 58 conjunts are in the unsatisfiable core [2023-08-03 19:40:33,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:38,955 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:40:38,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:40:40,790 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:40:40,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589013900] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:40:40,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:40:40,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2023-08-03 19:40:40,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636366283] [2023-08-03 19:40:40,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:40:40,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 19:40:40,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:40,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 19:40:40,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-03 19:40:41,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 968 [2023-08-03 19:40:41,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 63 transitions, 286 flow. Second operand has 11 states, 11 states have (on average 378.72727272727275) internal successors, (4166), 11 states have internal predecessors, (4166), 0 states have call successors, (0), 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 19:40:41,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:41,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 968 [2023-08-03 19:40:41,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:44,803 INFO L124 PetriNetUnfolderBase]: 15094/24190 cut-off events. [2023-08-03 19:40:44,804 INFO L125 PetriNetUnfolderBase]: For 15566/15566 co-relation queries the response was YES. [2023-08-03 19:40:44,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60337 conditions, 24190 events. 15094/24190 cut-off events. For 15566/15566 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 164433 event pairs, 1767 based on Foata normal form. 2/24071 useless extension candidates. Maximal degree in co-relation 60250. Up to 6570 conditions per place. [2023-08-03 19:40:44,895 INFO L140 encePairwiseOnDemand]: 959/968 looper letters, 160 selfloop transitions, 13 changer transitions 93/273 dead transitions. [2023-08-03 19:40:44,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 273 transitions, 1825 flow [2023-08-03 19:40:44,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-03 19:40:44,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-03 19:40:44,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3959 transitions. [2023-08-03 19:40:44,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089876033057851 [2023-08-03 19:40:44,900 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3959 transitions. [2023-08-03 19:40:44,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3959 transitions. [2023-08-03 19:40:44,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:44,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3959 transitions. [2023-08-03 19:40:44,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 395.9) internal successors, (3959), 10 states have internal predecessors, (3959), 0 states have call successors, (0), 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 19:40:44,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 968.0) internal successors, (10648), 11 states have internal predecessors, (10648), 0 states have call successors, (0), 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 19:40:44,910 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 968.0) internal successors, (10648), 11 states have internal predecessors, (10648), 0 states have call successors, (0), 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 19:40:44,910 INFO L175 Difference]: Start difference. First operand has 83 places, 63 transitions, 286 flow. Second operand 10 states and 3959 transitions. [2023-08-03 19:40:44,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 273 transitions, 1825 flow [2023-08-03 19:40:45,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 273 transitions, 1775 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-03 19:40:45,266 INFO L231 Difference]: Finished difference. Result has 97 places, 75 transitions, 400 flow [2023-08-03 19:40:45,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=400, PETRI_PLACES=97, PETRI_TRANSITIONS=75} [2023-08-03 19:40:45,266 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 41 predicate places. [2023-08-03 19:40:45,266 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 75 transitions, 400 flow [2023-08-03 19:40:45,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 378.72727272727275) internal successors, (4166), 11 states have internal predecessors, (4166), 0 states have call successors, (0), 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 19:40:45,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:45,267 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:45,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-03 19:40:45,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-03 19:40:45,471 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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 19:40:45,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:45,472 INFO L85 PathProgramCache]: Analyzing trace with hash -818757884, now seen corresponding path program 1 times [2023-08-03 19:40:45,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:45,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589577185] [2023-08-03 19:40:45,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:45,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:46,246 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:40:46,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:46,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589577185] [2023-08-03 19:40:46,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589577185] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:46,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901711587] [2023-08-03 19:40:46,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:46,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:46,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:46,253 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:46,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-03 19:40:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:46,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 72 conjunts are in the unsatisfiable core [2023-08-03 19:40:46,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:50,038 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-08-03 19:40:50,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:40:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-08-03 19:40:51,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901711587] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:40:51,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:40:51,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 19 [2023-08-03 19:40:51,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126662681] [2023-08-03 19:40:51,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:40:51,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-03 19:40:51,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:51,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-03 19:40:51,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2023-08-03 19:40:52,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 968 [2023-08-03 19:40:52,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 75 transitions, 400 flow. Second operand has 19 states, 19 states have (on average 356.3157894736842) internal successors, (6770), 19 states have internal predecessors, (6770), 0 states have call successors, (0), 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 19:40:52,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:52,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 968 [2023-08-03 19:40:52,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:59,507 INFO L124 PetriNetUnfolderBase]: 16633/27093 cut-off events. [2023-08-03 19:40:59,508 INFO L125 PetriNetUnfolderBase]: For 85209/85209 co-relation queries the response was YES. [2023-08-03 19:40:59,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105736 conditions, 27093 events. 16633/27093 cut-off events. For 85209/85209 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 190512 event pairs, 2340 based on Foata normal form. 90/27170 useless extension candidates. Maximal degree in co-relation 105692. Up to 10369 conditions per place. [2023-08-03 19:40:59,691 INFO L140 encePairwiseOnDemand]: 949/968 looper letters, 172 selfloop transitions, 47 changer transitions 133/357 dead transitions. [2023-08-03 19:40:59,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 357 transitions, 2696 flow [2023-08-03 19:40:59,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-03 19:40:59,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-03 19:40:59,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 12234 transitions. [2023-08-03 19:40:59,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37171852211959167 [2023-08-03 19:40:59,704 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 12234 transitions. [2023-08-03 19:40:59,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 12234 transitions. [2023-08-03 19:40:59,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:59,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 12234 transitions. [2023-08-03 19:40:59,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 359.8235294117647) internal successors, (12234), 34 states have internal predecessors, (12234), 0 states have call successors, (0), 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 19:40:59,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 968.0) internal successors, (33880), 35 states have internal predecessors, (33880), 0 states have call successors, (0), 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 19:40:59,741 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 968.0) internal successors, (33880), 35 states have internal predecessors, (33880), 0 states have call successors, (0), 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 19:40:59,741 INFO L175 Difference]: Start difference. First operand has 97 places, 75 transitions, 400 flow. Second operand 34 states and 12234 transitions. [2023-08-03 19:40:59,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 357 transitions, 2696 flow [2023-08-03 19:41:00,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 357 transitions, 2688 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-03 19:41:00,085 INFO L231 Difference]: Finished difference. Result has 141 places, 108 transitions, 798 flow [2023-08-03 19:41:00,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=798, PETRI_PLACES=141, PETRI_TRANSITIONS=108} [2023-08-03 19:41:00,085 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 85 predicate places. [2023-08-03 19:41:00,086 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 108 transitions, 798 flow [2023-08-03 19:41:00,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 356.3157894736842) internal successors, (6770), 19 states have internal predecessors, (6770), 0 states have call successors, (0), 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 19:41:00,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:00,086 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:00,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-03 19:41:00,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-03 19:41:00,292 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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 19:41:00,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:00,292 INFO L85 PathProgramCache]: Analyzing trace with hash -388660548, now seen corresponding path program 1 times [2023-08-03 19:41:00,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:00,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400720412] [2023-08-03 19:41:00,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:00,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:00,916 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:41:00,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:00,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400720412] [2023-08-03 19:41:00,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400720412] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:41:00,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828132761] [2023-08-03 19:41:00,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:00,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:41:00,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:41:00,925 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:41:00,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-03 19:41:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:01,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 58 conjunts are in the unsatisfiable core [2023-08-03 19:41:01,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:41:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-03 19:41:05,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:41:07,039 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-03 19:41:07,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828132761] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:41:07,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:41:07,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 21 [2023-08-03 19:41:07,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718528718] [2023-08-03 19:41:07,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:41:07,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-03 19:41:07,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:07,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-03 19:41:07,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2023-08-03 19:41:08,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 968 [2023-08-03 19:41:08,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 108 transitions, 798 flow. Second operand has 21 states, 21 states have (on average 354.95238095238096) internal successors, (7454), 21 states have internal predecessors, (7454), 0 states have call successors, (0), 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 19:41:08,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:08,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 968 [2023-08-03 19:41:08,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:16,422 INFO L124 PetriNetUnfolderBase]: 17235/29811 cut-off events. [2023-08-03 19:41:16,423 INFO L125 PetriNetUnfolderBase]: For 198230/199234 co-relation queries the response was YES. [2023-08-03 19:41:16,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144059 conditions, 29811 events. 17235/29811 cut-off events. For 198230/199234 co-relation queries the response was YES. Maximal size of possible extension queue 973. Compared 234736 event pairs, 2290 based on Foata normal form. 451/30180 useless extension candidates. Maximal degree in co-relation 144002. Up to 10488 conditions per place. [2023-08-03 19:41:16,734 INFO L140 encePairwiseOnDemand]: 946/968 looper letters, 249 selfloop transitions, 108 changer transitions 28/392 dead transitions. [2023-08-03 19:41:16,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 392 transitions, 3844 flow [2023-08-03 19:41:16,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-03 19:41:16,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-03 19:41:16,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 9694 transitions. [2023-08-03 19:41:16,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709060299969391 [2023-08-03 19:41:16,743 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 9694 transitions. [2023-08-03 19:41:16,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 9694 transitions. [2023-08-03 19:41:16,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:16,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 9694 transitions. [2023-08-03 19:41:16,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 359.037037037037) internal successors, (9694), 27 states have internal predecessors, (9694), 0 states have call successors, (0), 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 19:41:16,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 968.0) internal successors, (27104), 28 states have internal predecessors, (27104), 0 states have call successors, (0), 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 19:41:16,767 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 968.0) internal successors, (27104), 28 states have internal predecessors, (27104), 0 states have call successors, (0), 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 19:41:16,767 INFO L175 Difference]: Start difference. First operand has 141 places, 108 transitions, 798 flow. Second operand 27 states and 9694 transitions. [2023-08-03 19:41:16,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 392 transitions, 3844 flow [2023-08-03 19:41:17,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 392 transitions, 3518 flow, removed 111 selfloop flow, removed 15 redundant places. [2023-08-03 19:41:17,956 INFO L231 Difference]: Finished difference. Result has 150 places, 189 transitions, 1910 flow [2023-08-03 19:41:17,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1910, PETRI_PLACES=150, PETRI_TRANSITIONS=189} [2023-08-03 19:41:17,957 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 94 predicate places. [2023-08-03 19:41:17,957 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 189 transitions, 1910 flow [2023-08-03 19:41:17,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 354.95238095238096) internal successors, (7454), 21 states have internal predecessors, (7454), 0 states have call successors, (0), 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 19:41:17,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:17,958 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:17,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-08-03 19:41:18,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:41:18,163 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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 19:41:18,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:18,163 INFO L85 PathProgramCache]: Analyzing trace with hash 278832566, now seen corresponding path program 1 times [2023-08-03 19:41:18,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:18,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120889009] [2023-08-03 19:41:18,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:18,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:18,634 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:41:18,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:18,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120889009] [2023-08-03 19:41:18,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120889009] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:41:18,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528425075] [2023-08-03 19:41:18,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:18,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:41:18,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:41:18,637 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:41:18,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-03 19:41:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:18,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 58 conjunts are in the unsatisfiable core [2023-08-03 19:41:18,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:41:23,887 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:41:23,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:41:25,919 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:41:25,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528425075] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:41:25,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:41:25,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 18 [2023-08-03 19:41:25,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086361532] [2023-08-03 19:41:25,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:41:25,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-03 19:41:25,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:25,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-03 19:41:25,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-08-03 19:41:26,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 968 [2023-08-03 19:41:26,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 189 transitions, 1910 flow. Second operand has 18 states, 18 states have (on average 359.6111111111111) internal successors, (6473), 18 states have internal predecessors, (6473), 0 states have call successors, (0), 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 19:41:26,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:26,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 968 [2023-08-03 19:41:26,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:40,743 INFO L124 PetriNetUnfolderBase]: 18266/32753 cut-off events. [2023-08-03 19:41:40,743 INFO L125 PetriNetUnfolderBase]: For 358797/358839 co-relation queries the response was YES. [2023-08-03 19:41:40,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192526 conditions, 32753 events. 18266/32753 cut-off events. For 358797/358839 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 269142 event pairs, 1620 based on Foata normal form. 80/32812 useless extension candidates. Maximal degree in co-relation 192468. Up to 16050 conditions per place. [2023-08-03 19:41:40,917 INFO L140 encePairwiseOnDemand]: 949/968 looper letters, 172 selfloop transitions, 74 changer transitions 299/556 dead transitions. [2023-08-03 19:41:40,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 556 transitions, 6741 flow [2023-08-03 19:41:40,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-03 19:41:40,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-03 19:41:40,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 15177 transitions. [2023-08-03 19:41:40,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37330283353010624 [2023-08-03 19:41:40,955 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 15177 transitions. [2023-08-03 19:41:40,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 15177 transitions. [2023-08-03 19:41:40,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:40,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 15177 transitions. [2023-08-03 19:41:40,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 361.35714285714283) internal successors, (15177), 42 states have internal predecessors, (15177), 0 states have call successors, (0), 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 19:41:40,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 968.0) internal successors, (41624), 43 states have internal predecessors, (41624), 0 states have call successors, (0), 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 19:41:40,992 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 968.0) internal successors, (41624), 43 states have internal predecessors, (41624), 0 states have call successors, (0), 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 19:41:40,992 INFO L175 Difference]: Start difference. First operand has 150 places, 189 transitions, 1910 flow. Second operand 42 states and 15177 transitions. [2023-08-03 19:41:40,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 556 transitions, 6741 flow [2023-08-03 19:41:43,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 556 transitions, 6299 flow, removed 201 selfloop flow, removed 11 redundant places. [2023-08-03 19:41:43,633 INFO L231 Difference]: Finished difference. Result has 190 places, 161 transitions, 1557 flow [2023-08-03 19:41:43,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1557, PETRI_PLACES=190, PETRI_TRANSITIONS=161} [2023-08-03 19:41:43,633 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 134 predicate places. [2023-08-03 19:41:43,633 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 161 transitions, 1557 flow [2023-08-03 19:41:43,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 359.6111111111111) internal successors, (6473), 18 states have internal predecessors, (6473), 0 states have call successors, (0), 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 19:41:43,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:43,634 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:43,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-03 19:41:43,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:41:43,840 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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 19:41:43,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:43,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1438515808, now seen corresponding path program 2 times [2023-08-03 19:41:43,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:43,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578086216] [2023-08-03 19:41:43,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:43,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:44,901 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-03 19:41:44,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:44,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578086216] [2023-08-03 19:41:44,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578086216] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:41:44,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:41:44,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-03 19:41:44,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423068501] [2023-08-03 19:41:44,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:41:44,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 19:41:44,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:44,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 19:41:44,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:41:45,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 968 [2023-08-03 19:41:45,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 161 transitions, 1557 flow. Second operand has 6 states, 6 states have (on average 378.5) internal successors, (2271), 6 states have internal predecessors, (2271), 0 states have call successors, (0), 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 19:41:45,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:45,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 968 [2023-08-03 19:41:45,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:41:47,362 INFO L124 PetriNetUnfolderBase]: 7624/14642 cut-off events. [2023-08-03 19:41:47,362 INFO L125 PetriNetUnfolderBase]: For 215473/215627 co-relation queries the response was YES. [2023-08-03 19:41:47,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94132 conditions, 14642 events. 7624/14642 cut-off events. For 215473/215627 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 119275 event pairs, 920 based on Foata normal form. 40/14573 useless extension candidates. Maximal degree in co-relation 94071. Up to 6712 conditions per place. [2023-08-03 19:41:47,450 INFO L140 encePairwiseOnDemand]: 959/968 looper letters, 142 selfloop transitions, 54 changer transitions 7/223 dead transitions. [2023-08-03 19:41:47,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 223 transitions, 2456 flow [2023-08-03 19:41:47,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 19:41:47,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 19:41:47,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2716 transitions. [2023-08-03 19:41:47,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40082644628099173 [2023-08-03 19:41:47,453 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2716 transitions. [2023-08-03 19:41:47,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2716 transitions. [2023-08-03 19:41:47,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:41:47,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2716 transitions. [2023-08-03 19:41:47,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 388.0) internal successors, (2716), 7 states have internal predecessors, (2716), 0 states have call successors, (0), 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 19:41:47,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 968.0) internal successors, (7744), 8 states have internal predecessors, (7744), 0 states have call successors, (0), 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 19:41:47,473 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 968.0) internal successors, (7744), 8 states have internal predecessors, (7744), 0 states have call successors, (0), 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 19:41:47,473 INFO L175 Difference]: Start difference. First operand has 190 places, 161 transitions, 1557 flow. Second operand 7 states and 2716 transitions. [2023-08-03 19:41:47,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 223 transitions, 2456 flow [2023-08-03 19:41:49,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 223 transitions, 2171 flow, removed 120 selfloop flow, removed 21 redundant places. [2023-08-03 19:41:49,476 INFO L231 Difference]: Finished difference. Result has 148 places, 161 transitions, 1533 flow [2023-08-03 19:41:49,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=1335, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1533, PETRI_PLACES=148, PETRI_TRANSITIONS=161} [2023-08-03 19:41:49,477 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 92 predicate places. [2023-08-03 19:41:49,477 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 161 transitions, 1533 flow [2023-08-03 19:41:49,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 378.5) internal successors, (2271), 6 states have internal predecessors, (2271), 0 states have call successors, (0), 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 19:41:49,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:41:49,477 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:41:49,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-03 19:41:49,477 INFO L420 AbstractCegarLoop]: === Iteration 21 === 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 19:41:49,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:41:49,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1216918200, now seen corresponding path program 1 times [2023-08-03 19:41:49,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:41:49,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389272950] [2023-08-03 19:41:49,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:49,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:41:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:49,914 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-08-03 19:41:49,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:41:49,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389272950] [2023-08-03 19:41:49,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389272950] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:41:49,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112797228] [2023-08-03 19:41:49,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:41:49,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:41:49,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:41:49,925 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:41:49,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-03 19:41:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:41:50,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 72 conjunts are in the unsatisfiable core [2023-08-03 19:41:50,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:41:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:41:54,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:41:56,113 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:41:56,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112797228] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:41:56,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:41:56,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 7] total 21 [2023-08-03 19:41:56,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297997405] [2023-08-03 19:41:56,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:41:56,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-03 19:41:56,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:41:56,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-03 19:41:56,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2023-08-03 19:41:57,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 968 [2023-08-03 19:41:57,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 161 transitions, 1533 flow. Second operand has 21 states, 21 states have (on average 358.3809523809524) internal successors, (7526), 21 states have internal predecessors, (7526), 0 states have call successors, (0), 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 19:41:57,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:41:57,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 968 [2023-08-03 19:41:57,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:42:02,735 INFO L124 PetriNetUnfolderBase]: 7647/14752 cut-off events. [2023-08-03 19:42:02,736 INFO L125 PetriNetUnfolderBase]: For 181617/181707 co-relation queries the response was YES. [2023-08-03 19:42:02,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92256 conditions, 14752 events. 7647/14752 cut-off events. For 181617/181707 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 120279 event pairs, 1134 based on Foata normal form. 51/14714 useless extension candidates. Maximal degree in co-relation 92216. Up to 6112 conditions per place. [2023-08-03 19:42:02,792 INFO L140 encePairwiseOnDemand]: 947/968 looper letters, 0 selfloop transitions, 0 changer transitions 271/271 dead transitions. [2023-08-03 19:42:02,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 271 transitions, 3210 flow [2023-08-03 19:42:02,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-03 19:42:02,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-03 19:42:02,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 9346 transitions. [2023-08-03 19:42:02,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3713445645263827 [2023-08-03 19:42:02,798 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 9346 transitions. [2023-08-03 19:42:02,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 9346 transitions. [2023-08-03 19:42:02,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:42:02,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 9346 transitions. [2023-08-03 19:42:02,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 359.46153846153845) internal successors, (9346), 26 states have internal predecessors, (9346), 0 states have call successors, (0), 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 19:42:02,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 968.0) internal successors, (26136), 27 states have internal predecessors, (26136), 0 states have call successors, (0), 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 19:42:02,814 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 968.0) internal successors, (26136), 27 states have internal predecessors, (26136), 0 states have call successors, (0), 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 19:42:02,814 INFO L175 Difference]: Start difference. First operand has 148 places, 161 transitions, 1533 flow. Second operand 26 states and 9346 transitions. [2023-08-03 19:42:02,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 271 transitions, 3210 flow [2023-08-03 19:42:03,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 271 transitions, 3081 flow, removed 33 selfloop flow, removed 5 redundant places. [2023-08-03 19:42:03,533 INFO L231 Difference]: Finished difference. Result has 165 places, 0 transitions, 0 flow [2023-08-03 19:42:03,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=968, PETRI_DIFFERENCE_MINUEND_FLOW=1461, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=0, PETRI_PLACES=165, PETRI_TRANSITIONS=0} [2023-08-03 19:42:03,534 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 109 predicate places. [2023-08-03 19:42:03,534 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 0 transitions, 0 flow [2023-08-03 19:42:03,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 358.3809523809524) internal successors, (7526), 21 states have internal predecessors, (7526), 0 states have call successors, (0), 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 19:42:03,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 19:42:03,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 19:42:03,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:42:03,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:42:03,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-03 19:42:03,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:42:03,739 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:42:03,741 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 19:42:03,741 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 19:42:03,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 07:42:03 BasicIcfg [2023-08-03 19:42:03,743 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 19:42:03,743 INFO L158 Benchmark]: Toolchain (without parser) took 153870.90ms. Allocated memory was 310.4MB in the beginning and 7.6GB in the end (delta: 7.3GB). Free memory was 256.8MB in the beginning and 5.3GB in the end (delta: -5.0GB). Peak memory consumption was 2.2GB. Max. memory is 16.0GB. [2023-08-03 19:42:03,743 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 310.4MB. Free memory is still 262.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:42:03,744 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.11ms. Allocated memory is still 310.4MB. Free memory was 256.8MB in the beginning and 244.5MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 19:42:03,744 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.82ms. Allocated memory is still 310.4MB. Free memory was 244.5MB in the beginning and 242.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:42:03,744 INFO L158 Benchmark]: Boogie Preprocessor took 22.29ms. Allocated memory is still 310.4MB. Free memory was 242.1MB in the beginning and 240.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:42:03,744 INFO L158 Benchmark]: RCFGBuilder took 449.47ms. Allocated memory was 310.4MB in the beginning and 448.8MB in the end (delta: 138.4MB). Free memory was 240.0MB in the beginning and 410.7MB in the end (delta: -170.7MB). Peak memory consumption was 24.8MB. Max. memory is 16.0GB. [2023-08-03 19:42:03,744 INFO L158 Benchmark]: TraceAbstraction took 153201.33ms. Allocated memory was 448.8MB in the beginning and 7.6GB in the end (delta: 7.1GB). Free memory was 409.9MB in the beginning and 5.3GB in the end (delta: -4.9GB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. [2023-08-03 19:42:03,745 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 310.4MB. Free memory is still 262.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 159.11ms. Allocated memory is still 310.4MB. Free memory was 256.8MB in the beginning and 244.5MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.82ms. Allocated memory is still 310.4MB. Free memory was 244.5MB in the beginning and 242.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.29ms. Allocated memory is still 310.4MB. Free memory was 242.1MB in the beginning and 240.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 449.47ms. Allocated memory was 310.4MB in the beginning and 448.8MB in the end (delta: 138.4MB). Free memory was 240.0MB in the beginning and 410.7MB in the end (delta: -170.7MB). Peak memory consumption was 24.8MB. Max. memory is 16.0GB. * TraceAbstraction took 153201.33ms. Allocated memory was 448.8MB in the beginning and 7.6GB in the end (delta: 7.1GB). Free memory was 409.9MB in the beginning and 5.3GB in the end (delta: -4.9GB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.3s, 281 PlacesBefore, 41 PlacesAfterwards, 303 TransitionsBefore, 44 TransitionsAfterwards, 36660 CoEnabledTransitionPairs, 8 FixpointIterations, 60 TrivialSequentialCompositions, 181 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 65 ConcurrentYvCompositions, 19 ChoiceCompositions, 325 TotalNumberOfCompositions, 38222 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 37602, independent: 37560, independent conditional: 0, independent unconditional: 37560, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 21322, independent: 21309, independent conditional: 0, independent unconditional: 21309, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 37602, independent: 16251, independent conditional: 0, independent unconditional: 16251, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 21322, unknown conditional: 0, unknown unconditional: 21322] , Statistics on independence cache: Total cache size (in pairs): 89, Positive cache size: 86, Positive conditional cache size: 0, Positive unconditional cache size: 86, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.7s, 419 PlacesBefore, 56 PlacesAfterwards, 456 TransitionsBefore, 62 TransitionsAfterwards, 119004 CoEnabledTransitionPairs, 8 FixpointIterations, 60 TrivialSequentialCompositions, 291 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 130 ConcurrentYvCompositions, 31 ChoiceCompositions, 512 TotalNumberOfCompositions, 136016 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 130806, independent: 130728, independent conditional: 0, independent unconditional: 130728, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 71296, independent: 71266, independent conditional: 0, independent unconditional: 71266, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 130806, independent: 59462, independent conditional: 0, independent unconditional: 59462, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 71296, unknown conditional: 0, unknown unconditional: 71296] , Statistics on independence cache: Total cache size (in pairs): 256, Positive cache size: 251, Positive conditional cache size: 0, Positive unconditional cache size: 251, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 89]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 407 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.7s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.5s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 539 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 146.3s, OverallIterations: 21, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 91.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6351 SdHoareTripleChecker+Valid, 9.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5894 mSDsluCounter, 14991 SdHoareTripleChecker+Invalid, 8.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14930 mSDsCounter, 241 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17319 IncrementalHoareTripleChecker+Invalid, 17560 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 241 mSolverCounterUnsat, 61 mSDtfsCounter, 17319 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1592 GetRequests, 1307 SyntacticMatches, 30 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2013 ImplicationChecksByTransitivity, 22.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1910occurred in iteration=18, InterpolantAutomatonStates: 203, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 37.4s InterpolantComputationTime, 1581 NumberOfCodeBlocks, 1581 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 2089 ConstructedInterpolants, 0 QuantifiedInterpolants, 52987 SizeOfPredicates, 232 NumberOfNonLiveVariables, 5020 ConjunctsInSsa, 358 ConjunctsInUnsatCore, 51 InterpolantComputations, 10 PerfectInterpolantSequences, 925/1057 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 19:42:03,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...