/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_mult-dist.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:57:23,618 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:57:23,673 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:57:23,680 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:57:23,680 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:57:23,681 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:57:23,681 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:57:23,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:57:23,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:57:23,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:57:23,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:57:23,718 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:57:23,719 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:57:23,719 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:57:23,719 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:57:23,720 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:57:23,720 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:57:23,723 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:57:23,724 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:57:23,724 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:57:23,727 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:57:23,728 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:57:23,728 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:57:23,729 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:57:23,730 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:57:23,730 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:57:23,731 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:57:23,731 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:57:23,731 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:57:23,731 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:57:23,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:57:23,732 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:57:23,733 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:57:23,733 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:57:23,733 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:57:23,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:57:23,733 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:57:23,733 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:57:23,733 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:57:23,734 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:57:23,734 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:57:23,734 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:57:23,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:57:23,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:57:23,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:57:23,994 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:57:23,994 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:57:23,995 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_mult-dist.wvr_bound2.c [2023-08-03 19:57:25,250 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:57:25,455 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:57:25,455 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_mult-dist.wvr_bound2.c [2023-08-03 19:57:25,462 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccd449427/c0e9214a9ac34e20bb3a750ac4a74467/FLAG99496a154 [2023-08-03 19:57:25,477 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccd449427/c0e9214a9ac34e20bb3a750ac4a74467 [2023-08-03 19:57:25,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:57:25,484 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:57:25,489 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:57:25,489 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:57:25,492 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:57:25,492 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:57:25" (1/1) ... [2023-08-03 19:57:25,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15434a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:57:25, skipping insertion in model container [2023-08-03 19:57:25,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:57:25" (1/1) ... [2023-08-03 19:57:25,515 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:57:25,674 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_mult-dist.wvr_bound2.c[2359,2372] [2023-08-03 19:57:25,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:57:25,682 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:57:25,701 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_mult-dist.wvr_bound2.c[2359,2372] [2023-08-03 19:57:25,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:57:25,713 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:57:25,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:57:25 WrapperNode [2023-08-03 19:57:25,714 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:57:25,714 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:57:25,715 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:57:25,715 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:57:25,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:57:25" (1/1) ... [2023-08-03 19:57:25,726 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:57:25" (1/1) ... [2023-08-03 19:57:25,743 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 121 [2023-08-03 19:57:25,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:57:25,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:57:25,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:57:25,744 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:57:25,751 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:57:25" (1/1) ... [2023-08-03 19:57:25,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:57:25" (1/1) ... [2023-08-03 19:57:25,754 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:57:25" (1/1) ... [2023-08-03 19:57:25,754 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:57:25" (1/1) ... [2023-08-03 19:57:25,759 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:57:25" (1/1) ... [2023-08-03 19:57:25,762 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:57:25" (1/1) ... [2023-08-03 19:57:25,764 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:57:25" (1/1) ... [2023-08-03 19:57:25,764 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:57:25" (1/1) ... [2023-08-03 19:57:25,766 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:57:25,767 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:57:25,767 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:57:25,767 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:57:25,768 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:57:25" (1/1) ... [2023-08-03 19:57:25,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:57:25,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:57:25,798 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 19:57:25,807 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 19:57:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:57:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:57:25,839 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:57:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:57:25,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:57:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 19:57:25,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 19:57:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:57:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:57:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:57:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:57:25,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:57:25,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:57:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:57:25,844 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 19:57:25,944 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:57:25,946 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:57:26,217 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:57:26,225 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:57:26,225 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-03 19:57:26,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:57:26 BoogieIcfgContainer [2023-08-03 19:57:26,227 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:57:26,229 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:57:26,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:57:26,232 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:57:26,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:57:25" (1/3) ... [2023-08-03 19:57:26,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659531f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:57:26, skipping insertion in model container [2023-08-03 19:57:26,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:57:25" (2/3) ... [2023-08-03 19:57:26,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659531f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:57:26, skipping insertion in model container [2023-08-03 19:57:26,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:57:26" (3/3) ... [2023-08-03 19:57:26,234 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_mult-dist.wvr_bound2.c [2023-08-03 19:57:26,239 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:57:26,246 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:57:26,246 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:57:26,246 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:57:26,308 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 19:57:26,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 153 transitions, 348 flow [2023-08-03 19:57:26,495 INFO L124 PetriNetUnfolderBase]: 96/621 cut-off events. [2023-08-03 19:57:26,496 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 19:57:26,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 621 events. 96/621 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3239 event pairs, 0 based on Foata normal form. 0/515 useless extension candidates. Maximal degree in co-relation 346. Up to 16 conditions per place. [2023-08-03 19:57:26,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 153 transitions, 348 flow [2023-08-03 19:57:26,513 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 153 transitions, 348 flow [2023-08-03 19:57:26,516 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:57:26,523 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 153 transitions, 348 flow [2023-08-03 19:57:26,526 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 153 transitions, 348 flow [2023-08-03 19:57:26,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 153 transitions, 348 flow [2023-08-03 19:57:26,586 INFO L124 PetriNetUnfolderBase]: 96/621 cut-off events. [2023-08-03 19:57:26,586 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 19:57:26,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 621 events. 96/621 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3239 event pairs, 0 based on Foata normal form. 0/515 useless extension candidates. Maximal degree in co-relation 346. Up to 16 conditions per place. [2023-08-03 19:57:26,599 INFO L119 LiptonReduction]: Number of co-enabled transitions 5220 [2023-08-03 19:57:29,264 INFO L134 LiptonReduction]: Checked pairs total: 7970 [2023-08-03 19:57:29,264 INFO L136 LiptonReduction]: Total number of compositions: 120 [2023-08-03 19:57:29,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:57:29,280 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;@53216168, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:57:29,280 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:57:29,285 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:57:29,285 INFO L124 PetriNetUnfolderBase]: 3/31 cut-off events. [2023-08-03 19:57:29,285 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:57:29,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:57:29,286 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:57:29,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:57:29,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:57:29,291 INFO L85 PathProgramCache]: Analyzing trace with hash -366557933, now seen corresponding path program 1 times [2023-08-03 19:57:29,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:57:29,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096943284] [2023-08-03 19:57:29,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:57:29,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:57:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:57:29,389 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:57:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:57:29,422 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:57:29,423 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:57:29,424 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 19:57:29,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 19:57:29,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:57:29,426 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:57:29,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:57:29,427 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 19:57:29,429 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:57:29,429 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:57:29,461 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 19:57:29,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 195 transitions, 480 flow [2023-08-03 19:57:29,902 INFO L124 PetriNetUnfolderBase]: 886/4110 cut-off events. [2023-08-03 19:57:29,902 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:57:29,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4784 conditions, 4110 events. 886/4110 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 33172 event pairs, 33 based on Foata normal form. 0/3468 useless extension candidates. Maximal degree in co-relation 2415. Up to 192 conditions per place. [2023-08-03 19:57:29,942 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 195 transitions, 480 flow [2023-08-03 19:57:29,964 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 195 transitions, 480 flow [2023-08-03 19:57:29,964 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:57:29,965 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 195 transitions, 480 flow [2023-08-03 19:57:29,965 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 195 transitions, 480 flow [2023-08-03 19:57:29,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 195 transitions, 480 flow [2023-08-03 19:57:30,436 INFO L124 PetriNetUnfolderBase]: 886/4110 cut-off events. [2023-08-03 19:57:30,437 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:57:30,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4784 conditions, 4110 events. 886/4110 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 33172 event pairs, 33 based on Foata normal form. 0/3468 useless extension candidates. Maximal degree in co-relation 2415. Up to 192 conditions per place. [2023-08-03 19:57:30,544 INFO L119 LiptonReduction]: Number of co-enabled transitions 13500 [2023-08-03 19:57:33,506 INFO L134 LiptonReduction]: Checked pairs total: 24306 [2023-08-03 19:57:33,506 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-03 19:57:33,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:57:33,509 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;@53216168, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:57:33,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:57:33,512 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:57:33,512 INFO L124 PetriNetUnfolderBase]: 3/31 cut-off events. [2023-08-03 19:57:33,512 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 19:57:33,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:57:33,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:57:33,513 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 19:57:33,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:57:33,513 INFO L85 PathProgramCache]: Analyzing trace with hash 2039646318, now seen corresponding path program 1 times [2023-08-03 19:57:33,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:57:33,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208418906] [2023-08-03 19:57:33,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:57:33,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:57:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:57:33,602 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 19:57:33,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:57:33,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208418906] [2023-08-03 19:57:33,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208418906] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:57:33,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:57:33,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:57:33,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173460742] [2023-08-03 19:57:33,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:57:33,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:57:33,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:57:33,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:57:33,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:57:33,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 336 [2023-08-03 19:57:33,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 71 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 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 19:57:33,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:57:33,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 336 [2023-08-03 19:57:33,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:57:52,652 INFO L124 PetriNetUnfolderBase]: 282558/337063 cut-off events. [2023-08-03 19:57:52,652 INFO L125 PetriNetUnfolderBase]: For 35646/35646 co-relation queries the response was YES. [2023-08-03 19:57:53,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685339 conditions, 337063 events. 282558/337063 cut-off events. For 35646/35646 co-relation queries the response was YES. Maximal size of possible extension queue 6293. Compared 1585321 event pairs, 121223 based on Foata normal form. 0/188806 useless extension candidates. Maximal degree in co-relation 224681. Up to 327391 conditions per place. [2023-08-03 19:57:54,542 INFO L140 encePairwiseOnDemand]: 332/336 looper letters, 57 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-03 19:57:54,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 74 transitions, 356 flow [2023-08-03 19:57:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:57:54,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:57:54,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-08-03 19:57:54,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2023-08-03 19:57:54,560 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-08-03 19:57:54,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-08-03 19:57:54,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:57:54,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-08-03 19:57:54,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 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 19:57:54,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 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 19:57:54,577 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 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 19:57:54,578 INFO L175 Difference]: Start difference. First operand has 60 places, 71 transitions, 232 flow. Second operand 3 states and 520 transitions. [2023-08-03 19:57:54,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 74 transitions, 356 flow [2023-08-03 19:57:54,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 74 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:57:54,618 INFO L231 Difference]: Finished difference. Result has 62 places, 71 transitions, 242 flow [2023-08-03 19:57:54,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=62, PETRI_TRANSITIONS=71} [2023-08-03 19:57:54,622 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2023-08-03 19:57:54,623 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 71 transitions, 242 flow [2023-08-03 19:57:54,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 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 19:57:54,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:57:54,623 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:57:54,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:57:54,624 INFO L420 AbstractCegarLoop]: === Iteration 2 === 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 19:57:54,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:57:54,625 INFO L85 PathProgramCache]: Analyzing trace with hash 603800977, now seen corresponding path program 1 times [2023-08-03 19:57:54,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:57:54,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126473017] [2023-08-03 19:57:54,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:57:54,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:57:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:57:54,727 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 19:57:54,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:57:54,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126473017] [2023-08-03 19:57:54,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126473017] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:57:54,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866259980] [2023-08-03 19:57:54,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:57:54,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:57:54,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:57:54,738 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 19:57:54,742 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 19:57:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:57:54,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:57:54,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:57:54,851 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 19:57:54,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:57:54,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866259980] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:57:54,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:57:54,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:57:54,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534041461] [2023-08-03 19:57:54,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:57:54,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:57:54,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:57:54,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:57:54,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:57:54,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 336 [2023-08-03 19:57:54,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 71 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 153.6) internal successors, (768), 5 states have internal predecessors, (768), 0 states have call successors, (0), 0 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 19:57:54,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:57:54,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 336 [2023-08-03 19:57:54,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:58:11,758 INFO L124 PetriNetUnfolderBase]: 282508/337007 cut-off events. [2023-08-03 19:58:11,759 INFO L125 PetriNetUnfolderBase]: For 35917/35917 co-relation queries the response was YES. [2023-08-03 19:58:12,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685237 conditions, 337007 events. 282508/337007 cut-off events. For 35917/35917 co-relation queries the response was YES. Maximal size of possible extension queue 6317. Compared 1584645 event pairs, 98664 based on Foata normal form. 9/188796 useless extension candidates. Maximal degree in co-relation 392073. Up to 327295 conditions per place. [2023-08-03 19:58:13,890 INFO L140 encePairwiseOnDemand]: 332/336 looper letters, 60 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2023-08-03 19:58:13,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 78 transitions, 382 flow [2023-08-03 19:58:13,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:58:13,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:58:13,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 825 transitions. [2023-08-03 19:58:13,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2023-08-03 19:58:13,893 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 825 transitions. [2023-08-03 19:58:13,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 825 transitions. [2023-08-03 19:58:13,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:58:13,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 825 transitions. [2023-08-03 19:58:13,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 0 states have call successors, (0), 0 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 19:58:13,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 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 19:58:13,905 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 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 19:58:13,905 INFO L175 Difference]: Start difference. First operand has 62 places, 71 transitions, 242 flow. Second operand 5 states and 825 transitions. [2023-08-03 19:58:13,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 78 transitions, 382 flow [2023-08-03 19:58:13,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 372 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:58:13,936 INFO L231 Difference]: Finished difference. Result has 64 places, 71 transitions, 247 flow [2023-08-03 19:58:13,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=247, PETRI_PLACES=64, PETRI_TRANSITIONS=71} [2023-08-03 19:58:13,937 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 4 predicate places. [2023-08-03 19:58:13,937 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 71 transitions, 247 flow [2023-08-03 19:58:13,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.6) internal successors, (768), 5 states have internal predecessors, (768), 0 states have call successors, (0), 0 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 19:58:13,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:58:13,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:58:13,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 19:58:14,139 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 19:58:14,139 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 19:58:14,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:58:14,140 INFO L85 PathProgramCache]: Analyzing trace with hash -867155027, now seen corresponding path program 1 times [2023-08-03 19:58:14,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:58:14,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708273896] [2023-08-03 19:58:14,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:58:14,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:58:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:58:14,214 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 19:58:14,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:58:14,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708273896] [2023-08-03 19:58:14,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708273896] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:58:14,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491182771] [2023-08-03 19:58:14,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:58:14,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:58:14,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:58:14,216 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 19:58:14,219 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 19:58:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:58:14,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:58:14,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:58:14,285 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 19:58:14,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:58:14,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491182771] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:58:14,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:58:14,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:58:14,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534964643] [2023-08-03 19:58:14,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:58:14,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:58:14,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:58:14,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:58:14,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:58:14,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 336 [2023-08-03 19:58:14,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 71 transitions, 247 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 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 19:58:14,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:58:14,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 336 [2023-08-03 19:58:14,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:58:30,837 INFO L124 PetriNetUnfolderBase]: 278776/332615 cut-off events. [2023-08-03 19:58:30,837 INFO L125 PetriNetUnfolderBase]: For 29734/29734 co-relation queries the response was YES. [2023-08-03 19:58:31,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673651 conditions, 332615 events. 278776/332615 cut-off events. For 29734/29734 co-relation queries the response was YES. Maximal size of possible extension queue 6542. Compared 1579960 event pairs, 119869 based on Foata normal form. 0/186399 useless extension candidates. Maximal degree in co-relation 231660. Up to 322779 conditions per place. [2023-08-03 19:58:32,820 INFO L140 encePairwiseOnDemand]: 333/336 looper letters, 62 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2023-08-03 19:58:32,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 393 flow [2023-08-03 19:58:32,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:58:32,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:58:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 523 transitions. [2023-08-03 19:58:32,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188492063492064 [2023-08-03 19:58:32,822 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 523 transitions. [2023-08-03 19:58:32,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 523 transitions. [2023-08-03 19:58:32,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:58:32,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 523 transitions. [2023-08-03 19:58:32,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 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 19:58:32,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 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 19:58:32,826 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 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 19:58:32,826 INFO L175 Difference]: Start difference. First operand has 64 places, 71 transitions, 247 flow. Second operand 3 states and 523 transitions. [2023-08-03 19:58:32,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 393 flow [2023-08-03 19:58:32,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 79 transitions, 386 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:58:32,837 INFO L231 Difference]: Finished difference. Result has 65 places, 72 transitions, 255 flow [2023-08-03 19:58:32,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=65, PETRI_TRANSITIONS=72} [2023-08-03 19:58:32,838 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 5 predicate places. [2023-08-03 19:58:32,838 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 72 transitions, 255 flow [2023-08-03 19:58:32,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 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 19:58:32,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:58:32,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:58:32,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 19:58:33,044 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 19:58:33,045 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:58:33,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:58:33,045 INFO L85 PathProgramCache]: Analyzing trace with hash 912083398, now seen corresponding path program 1 times [2023-08-03 19:58:33,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:58:33,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42097427] [2023-08-03 19:58:33,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:58:33,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:58:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:58:33,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:58:33,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:58:33,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42097427] [2023-08-03 19:58:33,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42097427] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:58:33,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751172772] [2023-08-03 19:58:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:58:33,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:58:33,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:58:33,092 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 19:58:33,094 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 19:58:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:58:33,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:58:33,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:58:33,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 19:58:33,166 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:58:33,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751172772] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:58:33,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:58:33,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:58:33,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820484705] [2023-08-03 19:58:33,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:58:33,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:58:33,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:58:33,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:58:33,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:58:33,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 336 [2023-08-03 19:58:33,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 72 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 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 19:58:33,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:58:33,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 336 [2023-08-03 19:58:33,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:58:51,879 INFO L124 PetriNetUnfolderBase]: 278152/334079 cut-off events. [2023-08-03 19:58:51,879 INFO L125 PetriNetUnfolderBase]: For 21408/21408 co-relation queries the response was YES. [2023-08-03 19:58:53,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674686 conditions, 334079 events. 278152/334079 cut-off events. For 21408/21408 co-relation queries the response was YES. Maximal size of possible extension queue 7103. Compared 1675468 event pairs, 118825 based on Foata normal form. 0/188391 useless extension candidates. Maximal degree in co-relation 232257. Up to 318847 conditions per place. [2023-08-03 19:58:54,738 INFO L140 encePairwiseOnDemand]: 333/336 looper letters, 68 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-03 19:58:54,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 84 transitions, 419 flow [2023-08-03 19:58:54,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:58:54,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:58:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2023-08-03 19:58:54,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228174603174603 [2023-08-03 19:58:54,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2023-08-03 19:58:54,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2023-08-03 19:58:54,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:58:54,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2023-08-03 19:58:54,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 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 19:58:54,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 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 19:58:54,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 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 19:58:54,766 INFO L175 Difference]: Start difference. First operand has 65 places, 72 transitions, 255 flow. Second operand 3 states and 527 transitions. [2023-08-03 19:58:54,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 84 transitions, 419 flow [2023-08-03 19:58:54,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 84 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:58:54,783 INFO L231 Difference]: Finished difference. Result has 67 places, 73 transitions, 264 flow [2023-08-03 19:58:54,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=67, PETRI_TRANSITIONS=73} [2023-08-03 19:58:54,784 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 7 predicate places. [2023-08-03 19:58:54,784 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 73 transitions, 264 flow [2023-08-03 19:58:54,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 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 19:58:54,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:58:54,785 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:58:54,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 19:58:54,985 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 19:58:54,986 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:58:54,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:58:54,986 INFO L85 PathProgramCache]: Analyzing trace with hash -718316835, now seen corresponding path program 1 times [2023-08-03 19:58:54,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:58:54,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305823111] [2023-08-03 19:58:54,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:58:54,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:58:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:58:55,061 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 19:58:55,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:58:55,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305823111] [2023-08-03 19:58:55,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305823111] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:58:55,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737189909] [2023-08-03 19:58:55,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:58:55,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:58:55,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:58:55,066 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 19:58:55,068 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 19:58:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:58:55,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:58:55,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:58:55,142 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 19:58:55,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:58:55,158 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 19:58:55,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737189909] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:58:55,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:58:55,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:58:55,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178572915] [2023-08-03 19:58:55,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:58:55,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:58:55,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:58:55,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:58:55,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:58:55,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 336 [2023-08-03 19:58:55,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 73 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 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 19:58:55,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:58:55,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 336 [2023-08-03 19:58:55,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:59:12,187 INFO L124 PetriNetUnfolderBase]: 270978/325096 cut-off events. [2023-08-03 19:59:12,187 INFO L125 PetriNetUnfolderBase]: For 22798/22798 co-relation queries the response was YES. [2023-08-03 19:59:13,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659094 conditions, 325096 events. 270978/325096 cut-off events. For 22798/22798 co-relation queries the response was YES. Maximal size of possible extension queue 7109. Compared 1611763 event pairs, 95892 based on Foata normal form. 3/184666 useless extension candidates. Maximal degree in co-relation 186197. Up to 313774 conditions per place. [2023-08-03 19:59:14,169 INFO L140 encePairwiseOnDemand]: 333/336 looper letters, 62 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2023-08-03 19:59:14,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 79 transitions, 402 flow [2023-08-03 19:59:14,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:59:14,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:59:14,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 672 transitions. [2023-08-03 19:59:14,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-03 19:59:14,172 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 672 transitions. [2023-08-03 19:59:14,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 672 transitions. [2023-08-03 19:59:14,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:59:14,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 672 transitions. [2023-08-03 19:59:14,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 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 19:59:14,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 19:59:14,354 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 19:59:14,354 INFO L175 Difference]: Start difference. First operand has 67 places, 73 transitions, 264 flow. Second operand 4 states and 672 transitions. [2023-08-03 19:59:14,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 79 transitions, 402 flow [2023-08-03 19:59:14,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 79 transitions, 400 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:59:14,367 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 260 flow [2023-08-03 19:59:14,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=260, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2023-08-03 19:59:14,368 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 9 predicate places. [2023-08-03 19:59:14,368 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 260 flow [2023-08-03 19:59:14,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 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 19:59:14,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:59:14,369 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:59:14,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 19:59:14,576 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 19:59:14,577 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:59:14,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:59:14,577 INFO L85 PathProgramCache]: Analyzing trace with hash -324755427, now seen corresponding path program 1 times [2023-08-03 19:59:14,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:59:14,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379761854] [2023-08-03 19:59:14,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:59:14,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:59:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:59:14,673 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 19:59:14,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:59:14,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379761854] [2023-08-03 19:59:14,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379761854] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:59:14,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686739885] [2023-08-03 19:59:14,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:59:14,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:59:14,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:59:14,676 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 19:59:14,678 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 19:59:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:59:14,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:59:14,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:59:14,773 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 19:59:14,773 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:59:14,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686739885] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:59:14,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:59:14,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:59:14,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154163347] [2023-08-03 19:59:14,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:59:14,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:59:14,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:59:14,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:59:14,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:59:14,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 336 [2023-08-03 19:59:14,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 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 19:59:14,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:59:14,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 336 [2023-08-03 19:59:14,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:59:31,597 INFO L124 PetriNetUnfolderBase]: 270384/324421 cut-off events. [2023-08-03 19:59:31,598 INFO L125 PetriNetUnfolderBase]: For 22273/22273 co-relation queries the response was YES. [2023-08-03 19:59:32,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657375 conditions, 324421 events. 270384/324421 cut-off events. For 22273/22273 co-relation queries the response was YES. Maximal size of possible extension queue 7109. Compared 1610071 event pairs, 52863 based on Foata normal form. 81/184366 useless extension candidates. Maximal degree in co-relation 286135. Up to 312342 conditions per place. [2023-08-03 19:59:33,791 INFO L140 encePairwiseOnDemand]: 332/336 looper letters, 74 selfloop transitions, 4 changer transitions 0/91 dead transitions. [2023-08-03 19:59:33,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 91 transitions, 454 flow [2023-08-03 19:59:33,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:59:33,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:59:33,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 837 transitions. [2023-08-03 19:59:33,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4982142857142857 [2023-08-03 19:59:33,794 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 837 transitions. [2023-08-03 19:59:33,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 837 transitions. [2023-08-03 19:59:33,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:59:33,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 837 transitions. [2023-08-03 19:59:33,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.4) internal successors, (837), 5 states have internal predecessors, (837), 0 states have call successors, (0), 0 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 19:59:33,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 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 19:59:33,799 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 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 19:59:33,799 INFO L175 Difference]: Start difference. First operand has 69 places, 72 transitions, 260 flow. Second operand 5 states and 837 transitions. [2023-08-03 19:59:33,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 91 transitions, 454 flow [2023-08-03 19:59:33,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 440 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:59:33,821 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 263 flow [2023-08-03 19:59:33,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=263, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2023-08-03 19:59:33,822 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 9 predicate places. [2023-08-03 19:59:33,822 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 263 flow [2023-08-03 19:59:33,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 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 19:59:33,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:59:33,823 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:59:33,830 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 19:59:34,028 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 19:59:34,029 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:59:34,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:59:34,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1817222006, now seen corresponding path program 1 times [2023-08-03 19:59:34,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:59:34,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200326154] [2023-08-03 19:59:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:59:34,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:59:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:59:34,099 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 19:59:34,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:59:34,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200326154] [2023-08-03 19:59:34,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200326154] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:59:34,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659914989] [2023-08-03 19:59:34,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:59:34,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:59:34,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:59:34,101 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 19:59:34,103 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 19:59:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:59:34,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:59:34,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:59:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:59:34,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:59:34,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659914989] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:59:34,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:59:34,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:59:34,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040415654] [2023-08-03 19:59:34,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:59:34,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:59:34,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:59:34,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:59:34,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:59:34,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 336 [2023-08-03 19:59:34,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 263 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 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 19:59:34,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:59:34,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 336 [2023-08-03 19:59:34,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:59:50,363 INFO L124 PetriNetUnfolderBase]: 230667/278062 cut-off events. [2023-08-03 19:59:50,364 INFO L125 PetriNetUnfolderBase]: For 14878/14878 co-relation queries the response was YES. [2023-08-03 19:59:51,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562558 conditions, 278062 events. 230667/278062 cut-off events. For 14878/14878 co-relation queries the response was YES. Maximal size of possible extension queue 6407. Compared 1394076 event pairs, 92028 based on Foata normal form. 0/158689 useless extension candidates. Maximal degree in co-relation 253648. Up to 230757 conditions per place. [2023-08-03 19:59:52,872 INFO L140 encePairwiseOnDemand]: 333/336 looper letters, 77 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2023-08-03 19:59:52,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 475 flow [2023-08-03 19:59:52,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:59:52,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:59:52,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2023-08-03 19:59:52,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307539682539683 [2023-08-03 19:59:52,874 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2023-08-03 19:59:52,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2023-08-03 19:59:52,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:59:52,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2023-08-03 19:59:52,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 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 19:59:52,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 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 19:59:52,878 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 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 19:59:52,878 INFO L175 Difference]: Start difference. First operand has 69 places, 72 transitions, 263 flow. Second operand 3 states and 535 transitions. [2023-08-03 19:59:52,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 475 flow [2023-08-03 19:59:52,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 92 transitions, 468 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:59:52,888 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 268 flow [2023-08-03 19:59:52,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2023-08-03 19:59:52,889 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 10 predicate places. [2023-08-03 19:59:52,889 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 268 flow [2023-08-03 19:59:52,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 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 19:59:52,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:59:52,889 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 19:59:52,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 19:59:53,094 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 19:59:53,094 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 19:59:53,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:59:53,094 INFO L85 PathProgramCache]: Analyzing trace with hash -396421159, now seen corresponding path program 1 times [2023-08-03 19:59:53,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:59:53,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54540406] [2023-08-03 19:59:53,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:59:53,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:59:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:59:53,148 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 19:59:53,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:59:53,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54540406] [2023-08-03 19:59:53,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54540406] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:59:53,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648034527] [2023-08-03 19:59:53,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:59:53,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:59:53,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:59:53,150 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 19:59:53,152 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 19:59:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:59:53,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:59:53,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:59:53,244 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 19:59:53,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:59:53,261 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 19:59:53,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648034527] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:59:53,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:59:53,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:59:53,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646498989] [2023-08-03 19:59:53,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:59:53,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:59:53,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:59:53,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:59:53,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:59:53,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 336 [2023-08-03 19:59:53,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 155.6) internal successors, (778), 5 states have internal predecessors, (778), 0 states have call successors, (0), 0 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 19:59:53,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:59:53,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 336 [2023-08-03 19:59:53,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:00:08,014 INFO L124 PetriNetUnfolderBase]: 218490/263158 cut-off events. [2023-08-03 20:00:08,014 INFO L125 PetriNetUnfolderBase]: For 21905/21905 co-relation queries the response was YES. [2023-08-03 20:00:08,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541879 conditions, 263158 events. 218490/263158 cut-off events. For 21905/21905 co-relation queries the response was YES. Maximal size of possible extension queue 6440. Compared 1317796 event pairs, 78674 based on Foata normal form. 27/153119 useless extension candidates. Maximal degree in co-relation 248918. Up to 253899 conditions per place. [2023-08-03 20:00:09,684 INFO L140 encePairwiseOnDemand]: 333/336 looper letters, 71 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2023-08-03 20:00:09,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 87 transitions, 440 flow [2023-08-03 20:00:09,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:00:09,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:00:09,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 680 transitions. [2023-08-03 20:00:09,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2023-08-03 20:00:09,686 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 680 transitions. [2023-08-03 20:00:09,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 680 transitions. [2023-08-03 20:00:09,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:00:09,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 680 transitions. [2023-08-03 20:00:09,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 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 20:00:09,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 20:00:09,689 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 20:00:09,689 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 268 flow. Second operand 4 states and 680 transitions. [2023-08-03 20:00:09,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 87 transitions, 440 flow [2023-08-03 20:00:09,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 87 transitions, 438 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:00:09,778 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 264 flow [2023-08-03 20:00:09,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2023-08-03 20:00:09,779 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 12 predicate places. [2023-08-03 20:00:09,779 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 264 flow [2023-08-03 20:00:09,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.6) internal successors, (778), 5 states have internal predecessors, (778), 0 states have call successors, (0), 0 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 20:00:09,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:00:09,780 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 20:00:09,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 20:00:09,980 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 20:00:09,981 INFO L420 AbstractCegarLoop]: === Iteration 9 === 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 20:00:09,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:00:09,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1823441839, now seen corresponding path program 1 times [2023-08-03 20:00:09,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:00:09,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778243433] [2023-08-03 20:00:09,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:09,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:00:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:00:10,032 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 20:00:10,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:00:10,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778243433] [2023-08-03 20:00:10,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778243433] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:00:10,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907930915] [2023-08-03 20:00:10,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:10,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:00:10,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:00:10,035 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 20:00:10,037 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 20:00:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:00:10,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:00:10,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:00:10,135 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 20:00:10,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:00:10,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907930915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:00:10,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:00:10,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 20:00:10,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180915313] [2023-08-03 20:00:10,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:00:10,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:00:10,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:00:10,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:00:10,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:00:10,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 336 [2023-08-03 20:00:10,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 155.6) internal successors, (778), 5 states have internal predecessors, (778), 0 states have call successors, (0), 0 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 20:00:10,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:00:10,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 336 [2023-08-03 20:00:10,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:00:24,026 INFO L124 PetriNetUnfolderBase]: 212658/255829 cut-off events. [2023-08-03 20:00:24,026 INFO L125 PetriNetUnfolderBase]: For 19327/19327 co-relation queries the response was YES. [2023-08-03 20:00:24,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525721 conditions, 255829 events. 212658/255829 cut-off events. For 19327/19327 co-relation queries the response was YES. Maximal size of possible extension queue 6359. Compared 1264153 event pairs, 10590 based on Foata normal form. 729/149408 useless extension candidates. Maximal degree in co-relation 243836. Up to 237039 conditions per place. [2023-08-03 20:00:25,876 INFO L140 encePairwiseOnDemand]: 332/336 looper letters, 87 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2023-08-03 20:00:25,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 103 transitions, 508 flow [2023-08-03 20:00:25,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:00:25,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:00:25,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 849 transitions. [2023-08-03 20:00:25,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053571428571428 [2023-08-03 20:00:25,879 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 849 transitions. [2023-08-03 20:00:25,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 849 transitions. [2023-08-03 20:00:25,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:00:25,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 849 transitions. [2023-08-03 20:00:25,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 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 20:00:25,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 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 20:00:25,883 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 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 20:00:25,883 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 264 flow. Second operand 5 states and 849 transitions. [2023-08-03 20:00:25,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 103 transitions, 508 flow [2023-08-03 20:00:26,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 103 transitions, 494 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 20:00:26,008 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 267 flow [2023-08-03 20:00:26,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=267, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2023-08-03 20:00:26,009 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 12 predicate places. [2023-08-03 20:00:26,009 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 267 flow [2023-08-03 20:00:26,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.6) internal successors, (778), 5 states have internal predecessors, (778), 0 states have call successors, (0), 0 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 20:00:26,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:00:26,009 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] [2023-08-03 20:00:26,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 20:00:26,213 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 20:00:26,213 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 20:00:26,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:00:26,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1728149840, now seen corresponding path program 1 times [2023-08-03 20:00:26,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:00:26,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504532333] [2023-08-03 20:00:26,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:26,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:00:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:00:26,258 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 20:00:26,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:00:26,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504532333] [2023-08-03 20:00:26,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504532333] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:00:26,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265459582] [2023-08-03 20:00:26,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:26,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:00:26,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:00:26,260 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 20:00:26,263 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 20:00:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:00:26,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:00:26,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:00:26,348 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 20:00:26,348 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:00:26,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265459582] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:00:26,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:00:26,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 20:00:26,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312459459] [2023-08-03 20:00:26,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:00:26,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:00:26,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:00:26,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:00:26,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:00:26,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 336 [2023-08-03 20:00:26,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 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 20:00:26,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:00:26,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 336 [2023-08-03 20:00:26,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:00:39,649 INFO L124 PetriNetUnfolderBase]: 195527/237625 cut-off events. [2023-08-03 20:00:39,649 INFO L125 PetriNetUnfolderBase]: For 21455/21455 co-relation queries the response was YES. [2023-08-03 20:00:40,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489067 conditions, 237625 events. 195527/237625 cut-off events. For 21455/21455 co-relation queries the response was YES. Maximal size of possible extension queue 5081. Compared 1211597 event pairs, 71309 based on Foata normal form. 0/140915 useless extension candidates. Maximal degree in co-relation 235371. Up to 171897 conditions per place. [2023-08-03 20:00:41,089 INFO L140 encePairwiseOnDemand]: 333/336 looper letters, 78 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2023-08-03 20:00:41,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 92 transitions, 479 flow [2023-08-03 20:00:41,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:00:41,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:00:41,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2023-08-03 20:00:41,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307539682539683 [2023-08-03 20:00:41,093 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2023-08-03 20:00:41,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2023-08-03 20:00:41,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:00:41,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2023-08-03 20:00:41,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 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 20:00:41,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 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 20:00:41,097 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 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 20:00:41,097 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 267 flow. Second operand 3 states and 535 transitions. [2023-08-03 20:00:41,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 92 transitions, 479 flow [2023-08-03 20:00:41,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 92 transitions, 472 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 20:00:41,175 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 272 flow [2023-08-03 20:00:41,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2023-08-03 20:00:41,176 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 13 predicate places. [2023-08-03 20:00:41,176 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 272 flow [2023-08-03 20:00:41,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 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 20:00:41,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:00:41,177 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 20:00:41,185 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 20:00:41,381 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 20:00:41,381 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 20:00:41,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:00:41,382 INFO L85 PathProgramCache]: Analyzing trace with hash -95381468, now seen corresponding path program 1 times [2023-08-03 20:00:41,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:00:41,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787343769] [2023-08-03 20:00:41,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:41,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:00:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:00:41,432 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 20:00:41,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:00:41,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787343769] [2023-08-03 20:00:41,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787343769] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:00:41,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656101910] [2023-08-03 20:00:41,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:41,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:00:41,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:00:41,434 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 20:00:41,436 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 20:00:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:00:41,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:00:41,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:00:41,529 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 20:00:41,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:00:41,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656101910] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:00:41,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:00:41,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 20:00:41,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715352596] [2023-08-03 20:00:41,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:00:41,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:00:41,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:00:41,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:00:41,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:00:41,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 336 [2023-08-03 20:00:41,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 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 20:00:41,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:00:41,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 336 [2023-08-03 20:00:41,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:00:56,593 INFO L124 PetriNetUnfolderBase]: 194461/237040 cut-off events. [2023-08-03 20:00:56,593 INFO L125 PetriNetUnfolderBase]: For 25124/25124 co-relation queries the response was YES. [2023-08-03 20:00:57,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497040 conditions, 237040 events. 194461/237040 cut-off events. For 25124/25124 co-relation queries the response was YES. Maximal size of possible extension queue 4829. Compared 1216837 event pairs, 84459 based on Foata normal form. 0/143958 useless extension candidates. Maximal degree in co-relation 242597. Up to 202424 conditions per place. [2023-08-03 20:00:58,380 INFO L140 encePairwiseOnDemand]: 333/336 looper letters, 79 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-08-03 20:00:58,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 93 transitions, 486 flow [2023-08-03 20:00:58,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:00:58,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:00:58,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2023-08-03 20:00:58,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307539682539683 [2023-08-03 20:00:58,382 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2023-08-03 20:00:58,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2023-08-03 20:00:58,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:00:58,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2023-08-03 20:00:58,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 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 20:00:58,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 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 20:00:58,386 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 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 20:00:58,386 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 272 flow. Second operand 3 states and 535 transitions. [2023-08-03 20:00:58,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 93 transitions, 486 flow [2023-08-03 20:01:03,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 93 transitions, 484 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:01:03,149 INFO L231 Difference]: Finished difference. Result has 75 places, 74 transitions, 282 flow [2023-08-03 20:01:03,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=75, PETRI_TRANSITIONS=74} [2023-08-03 20:01:03,150 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 15 predicate places. [2023-08-03 20:01:03,150 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 74 transitions, 282 flow [2023-08-03 20:01:03,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 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 20:01:03,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:01:03,151 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, 1] [2023-08-03 20:01:03,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-03 20:01:03,355 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 20:01:03,355 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 20:01:03,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:01:03,356 INFO L85 PathProgramCache]: Analyzing trace with hash 81630354, now seen corresponding path program 1 times [2023-08-03 20:01:03,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:01:03,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975243551] [2023-08-03 20:01:03,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:01:03,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:01:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:01:03,424 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 20:01:03,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:01:03,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975243551] [2023-08-03 20:01:03,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975243551] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:01:03,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847929601] [2023-08-03 20:01:03,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:01:03,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:01:03,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:01:03,426 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 20:01:03,428 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 20:01:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:01:03,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:01:03,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:01:03,540 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 20:01:03,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:01:03,556 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 20:01:03,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847929601] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:01:03,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:01:03,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:01:03,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970783405] [2023-08-03 20:01:03,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:01:03,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:01:03,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:01:03,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:01:03,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:01:03,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 336 [2023-08-03 20:01:03,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 158.8) internal successors, (794), 5 states have internal predecessors, (794), 0 states have call successors, (0), 0 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 20:01:03,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:01:03,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 336 [2023-08-03 20:01:03,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:01:17,125 INFO L124 PetriNetUnfolderBase]: 188656/229939 cut-off events. [2023-08-03 20:01:17,126 INFO L125 PetriNetUnfolderBase]: For 22084/22084 co-relation queries the response was YES. [2023-08-03 20:01:17,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484103 conditions, 229939 events. 188656/229939 cut-off events. For 22084/22084 co-relation queries the response was YES. Maximal size of possible extension queue 5074. Compared 1201389 event pairs, 67625 based on Foata normal form. 243/140494 useless extension candidates. Maximal degree in co-relation 400629. Up to 212647 conditions per place. [2023-08-03 20:01:18,655 INFO L140 encePairwiseOnDemand]: 333/336 looper letters, 81 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2023-08-03 20:01:18,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 96 transitions, 490 flow [2023-08-03 20:01:18,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:01:18,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:01:18,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 688 transitions. [2023-08-03 20:01:18,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2023-08-03 20:01:18,657 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 688 transitions. [2023-08-03 20:01:18,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 688 transitions. [2023-08-03 20:01:18,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:01:18,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 688 transitions. [2023-08-03 20:01:18,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 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 20:01:18,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 20:01:18,661 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 20:01:18,661 INFO L175 Difference]: Start difference. First operand has 75 places, 74 transitions, 282 flow. Second operand 4 states and 688 transitions. [2023-08-03 20:01:18,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 96 transitions, 490 flow [2023-08-03 20:01:24,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 96 transitions, 488 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:01:24,759 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 278 flow [2023-08-03 20:01:24,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=278, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2023-08-03 20:01:24,760 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 17 predicate places. [2023-08-03 20:01:24,760 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 278 flow [2023-08-03 20:01:24,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.8) internal successors, (794), 5 states have internal predecessors, (794), 0 states have call successors, (0), 0 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 20:01:24,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:01:24,760 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, 1] [2023-08-03 20:01:24,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-03 20:01:24,964 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 20:01:24,964 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 20:01:24,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:01:24,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1056858941, now seen corresponding path program 1 times [2023-08-03 20:01:24,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:01:24,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046159906] [2023-08-03 20:01:24,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:01:24,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:01:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:01:25,050 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 20:01:25,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:01:25,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046159906] [2023-08-03 20:01:25,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046159906] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:01:25,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883799341] [2023-08-03 20:01:25,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:01:25,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:01:25,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:01:25,053 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 20:01:25,056 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 20:01:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:01:25,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:01:25,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:01:25,162 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 20:01:25,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:01:25,174 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 20:01:25,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883799341] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:01:25,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:01:25,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:01:25,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45680825] [2023-08-03 20:01:25,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:01:25,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:01:25,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:01:25,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:01:25,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:01:25,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 336 [2023-08-03 20:01:25,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 278 flow. Second operand has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 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 20:01:25,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:01:25,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 336 [2023-08-03 20:01:25,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:01:33,581 INFO L124 PetriNetUnfolderBase]: 121201/148228 cut-off events. [2023-08-03 20:01:33,581 INFO L125 PetriNetUnfolderBase]: For 17583/17583 co-relation queries the response was YES. [2023-08-03 20:01:34,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311725 conditions, 148228 events. 121201/148228 cut-off events. For 17583/17583 co-relation queries the response was YES. Maximal size of possible extension queue 2636. Compared 719318 event pairs, 29065 based on Foata normal form. 1458/91498 useless extension candidates. Maximal degree in co-relation 290955. Up to 71814 conditions per place. [2023-08-03 20:01:34,485 INFO L140 encePairwiseOnDemand]: 332/336 looper letters, 89 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2023-08-03 20:01:34,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 105 transitions, 540 flow [2023-08-03 20:01:34,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:01:34,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:01:34,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 697 transitions. [2023-08-03 20:01:34,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186011904761905 [2023-08-03 20:01:34,487 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 697 transitions. [2023-08-03 20:01:34,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 697 transitions. [2023-08-03 20:01:34,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:01:34,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 697 transitions. [2023-08-03 20:01:34,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 174.25) internal successors, (697), 4 states have internal predecessors, (697), 0 states have call successors, (0), 0 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 20:01:34,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 20:01:34,490 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 20:01:34,490 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 278 flow. Second operand 4 states and 697 transitions. [2023-08-03 20:01:34,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 105 transitions, 540 flow [2023-08-03 20:01:36,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 105 transitions, 534 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 20:01:36,068 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 292 flow [2023-08-03 20:01:36,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-08-03 20:01:36,069 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 19 predicate places. [2023-08-03 20:01:36,069 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 292 flow [2023-08-03 20:01:36,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 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 20:01:36,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:01:36,070 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, 1, 1] [2023-08-03 20:01:36,074 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 20:01:36,270 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 20:01:36,270 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 20:01:36,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:01:36,271 INFO L85 PathProgramCache]: Analyzing trace with hash 803391157, now seen corresponding path program 1 times [2023-08-03 20:01:36,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:01:36,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051770560] [2023-08-03 20:01:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:01:36,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:01:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:01:36,330 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 20:01:36,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:01:36,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051770560] [2023-08-03 20:01:36,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051770560] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:01:36,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133396627] [2023-08-03 20:01:36,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:01:36,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:01:36,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:01:36,332 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 20:01:36,360 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 20:01:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:01:36,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:01:36,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:01:36,447 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 20:01:36,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:01:36,461 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 20:01:36,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133396627] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:01:36,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:01:36,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:01:36,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224246972] [2023-08-03 20:01:36,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:01:36,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:01:36,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:01:36,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:01:36,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:01:36,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 336 [2023-08-03 20:01:36,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 159.4) internal successors, (797), 5 states have internal predecessors, (797), 0 states have call successors, (0), 0 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 20:01:36,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:01:36,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 336 [2023-08-03 20:01:36,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:01:44,867 INFO L124 PetriNetUnfolderBase]: 115306/140696 cut-off events. [2023-08-03 20:01:44,867 INFO L125 PetriNetUnfolderBase]: For 34166/34166 co-relation queries the response was YES. [2023-08-03 20:01:45,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309051 conditions, 140696 events. 115306/140696 cut-off events. For 34166/34166 co-relation queries the response was YES. Maximal size of possible extension queue 2636. Compared 673329 event pairs, 44506 based on Foata normal form. 694/85902 useless extension candidates. Maximal degree in co-relation 305950. Up to 101418 conditions per place. [2023-08-03 20:01:45,802 INFO L140 encePairwiseOnDemand]: 332/336 looper letters, 90 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2023-08-03 20:01:45,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 106 transitions, 556 flow [2023-08-03 20:01:45,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:01:45,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:01:45,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 697 transitions. [2023-08-03 20:01:45,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186011904761905 [2023-08-03 20:01:45,804 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 697 transitions. [2023-08-03 20:01:45,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 697 transitions. [2023-08-03 20:01:45,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:01:45,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 697 transitions. [2023-08-03 20:01:45,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 174.25) internal successors, (697), 4 states have internal predecessors, (697), 0 states have call successors, (0), 0 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 20:01:45,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 20:01:45,808 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 20:01:45,808 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 292 flow. Second operand 4 states and 697 transitions. [2023-08-03 20:01:45,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 106 transitions, 556 flow [2023-08-03 20:01:47,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 106 transitions, 552 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 20:01:47,517 INFO L231 Difference]: Finished difference. Result has 83 places, 75 transitions, 308 flow [2023-08-03 20:01:47,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=83, PETRI_TRANSITIONS=75} [2023-08-03 20:01:47,517 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 23 predicate places. [2023-08-03 20:01:47,517 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 75 transitions, 308 flow [2023-08-03 20:01:47,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.4) internal successors, (797), 5 states have internal predecessors, (797), 0 states have call successors, (0), 0 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 20:01:47,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:01:47,518 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, 1, 1, 1] [2023-08-03 20:01:47,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-03 20:01:47,718 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 20:01:47,719 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 20:01:47,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:01:47,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1715047121, now seen corresponding path program 1 times [2023-08-03 20:01:47,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:01:47,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217069368] [2023-08-03 20:01:47,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:01:47,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:01:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:01:47,802 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 20:01:47,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:01:47,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217069368] [2023-08-03 20:01:47,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217069368] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:01:47,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799475353] [2023-08-03 20:01:47,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:01:47,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:01:47,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:01:47,804 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 20:01:47,807 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 20:01:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:01:47,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:01:47,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:01:47,918 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 20:01:47,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:01:47,930 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 20:01:47,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799475353] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:01:47,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:01:47,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 20:01:47,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79440500] [2023-08-03 20:01:47,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:01:47,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:01:47,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:01:47,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:01:47,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:01:47,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 336 [2023-08-03 20:01:47,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 159.8) internal successors, (799), 5 states have internal predecessors, (799), 0 states have call successors, (0), 0 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 20:01:47,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:01:47,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 336 [2023-08-03 20:01:47,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:01:56,465 INFO L124 PetriNetUnfolderBase]: 115282/140655 cut-off events. [2023-08-03 20:01:56,465 INFO L125 PetriNetUnfolderBase]: For 34032/34032 co-relation queries the response was YES. [2023-08-03 20:01:57,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314200 conditions, 140655 events. 115282/140655 cut-off events. For 34032/34032 co-relation queries the response was YES. Maximal size of possible extension queue 2636. Compared 672564 event pairs, 57259 based on Foata normal form. 19/85198 useless extension candidates. Maximal degree in co-relation 311043. Up to 134404 conditions per place. [2023-08-03 20:01:57,652 INFO L140 encePairwiseOnDemand]: 332/336 looper letters, 89 selfloop transitions, 3 changer transitions 3/107 dead transitions. [2023-08-03 20:01:57,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 107 transitions, 574 flow [2023-08-03 20:01:57,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:01:57,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:01:57,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 697 transitions. [2023-08-03 20:01:57,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186011904761905 [2023-08-03 20:01:57,654 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 697 transitions. [2023-08-03 20:01:57,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 697 transitions. [2023-08-03 20:01:57,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:01:57,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 697 transitions. [2023-08-03 20:01:57,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 174.25) internal successors, (697), 4 states have internal predecessors, (697), 0 states have call successors, (0), 0 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 20:01:57,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 20:01:57,657 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 20:01:57,657 INFO L175 Difference]: Start difference. First operand has 83 places, 75 transitions, 308 flow. Second operand 4 states and 697 transitions. [2023-08-03 20:01:57,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 107 transitions, 574 flow [2023-08-03 20:02:01,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 107 transitions, 570 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 20:02:01,072 INFO L231 Difference]: Finished difference. Result has 87 places, 73 transitions, 306 flow [2023-08-03 20:02:01,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=87, PETRI_TRANSITIONS=73} [2023-08-03 20:02:01,072 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 27 predicate places. [2023-08-03 20:02:01,072 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 73 transitions, 306 flow [2023-08-03 20:02:01,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.8) internal successors, (799), 5 states have internal predecessors, (799), 0 states have call successors, (0), 0 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 20:02:01,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:02:01,073 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, 1, 1, 1, 1] [2023-08-03 20:02:01,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-03 20:02:01,273 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 20:02:01,274 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 20:02:01,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:02:01,274 INFO L85 PathProgramCache]: Analyzing trace with hash 419119019, now seen corresponding path program 1 times [2023-08-03 20:02:01,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:02:01,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125168391] [2023-08-03 20:02:01,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:02:01,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:02:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:02:01,690 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-08-03 20:02:01,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:02:01,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125168391] [2023-08-03 20:02:01,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125168391] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:02:01,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:02:01,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 20:02:01,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781202026] [2023-08-03 20:02:01,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:02:01,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:02:01,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:02:01,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:02:01,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:02:01,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 336 [2023-08-03 20:02:01,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 73 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 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 20:02:01,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:02:01,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 336 [2023-08-03 20:02:01,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:02:09,182 INFO L124 PetriNetUnfolderBase]: 107107/126545 cut-off events. [2023-08-03 20:02:09,183 INFO L125 PetriNetUnfolderBase]: For 53380/53380 co-relation queries the response was YES. [2023-08-03 20:02:09,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282624 conditions, 126545 events. 107107/126545 cut-off events. For 53380/53380 co-relation queries the response was YES. Maximal size of possible extension queue 2145. Compared 515391 event pairs, 9073 based on Foata normal form. 1/74382 useless extension candidates. Maximal degree in co-relation 282201. Up to 116374 conditions per place. [2023-08-03 20:02:10,324 INFO L140 encePairwiseOnDemand]: 328/336 looper letters, 111 selfloop transitions, 7 changer transitions 1/131 dead transitions. [2023-08-03 20:02:10,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 131 transitions, 811 flow [2023-08-03 20:02:10,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:02:10,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:02:10,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2023-08-03 20:02:10,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565476190476191 [2023-08-03 20:02:10,328 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 561 transitions. [2023-08-03 20:02:10,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 561 transitions. [2023-08-03 20:02:10,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:02:10,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 561 transitions. [2023-08-03 20:02:10,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 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 20:02:10,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 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 20:02:10,344 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 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 20:02:10,344 INFO L175 Difference]: Start difference. First operand has 87 places, 73 transitions, 306 flow. Second operand 3 states and 561 transitions. [2023-08-03 20:02:10,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 131 transitions, 811 flow [2023-08-03 20:02:11,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 131 transitions, 791 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-03 20:02:11,163 INFO L231 Difference]: Finished difference. Result has 86 places, 79 transitions, 343 flow [2023-08-03 20:02:11,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=86, PETRI_TRANSITIONS=79} [2023-08-03 20:02:11,164 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 26 predicate places. [2023-08-03 20:02:11,164 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 343 flow [2023-08-03 20:02:11,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 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 20:02:11,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:02:11,164 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, 1, 1, 1, 1, 1] [2023-08-03 20:02:11,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-03 20:02:11,164 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 20:02:11,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:02:11,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2062664685, now seen corresponding path program 1 times [2023-08-03 20:02:11,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:02:11,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105551593] [2023-08-03 20:02:11,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:02:11,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:02:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:02:11,420 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 20:02:11,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:02:11,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105551593] [2023-08-03 20:02:11,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105551593] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:02:11,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:02:11,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 20:02:11,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176243888] [2023-08-03 20:02:11,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:02:11,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 20:02:11,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:02:11,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 20:02:11,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 20:02:11,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 336 [2023-08-03 20:02:11,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 343 flow. Second operand has 4 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 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 20:02:11,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:02:11,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 336 [2023-08-03 20:02:11,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:02:25,321 INFO L124 PetriNetUnfolderBase]: 165236/200736 cut-off events. [2023-08-03 20:02:25,321 INFO L125 PetriNetUnfolderBase]: For 122755/122755 co-relation queries the response was YES. [2023-08-03 20:02:26,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524705 conditions, 200736 events. 165236/200736 cut-off events. For 122755/122755 co-relation queries the response was YES. Maximal size of possible extension queue 3847. Compared 1003123 event pairs, 35979 based on Foata normal form. 4144/204880 useless extension candidates. Maximal degree in co-relation 524000. Up to 112112 conditions per place. [2023-08-03 20:02:27,112 INFO L140 encePairwiseOnDemand]: 332/336 looper letters, 153 selfloop transitions, 4 changer transitions 0/168 dead transitions. [2023-08-03 20:02:27,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 168 transitions, 1058 flow [2023-08-03 20:02:27,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:02:27,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:02:27,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 724 transitions. [2023-08-03 20:02:27,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5386904761904762 [2023-08-03 20:02:27,114 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 724 transitions. [2023-08-03 20:02:27,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 724 transitions. [2023-08-03 20:02:27,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:02:27,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 724 transitions. [2023-08-03 20:02:27,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 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 20:02:27,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 20:02:27,118 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 20:02:27,118 INFO L175 Difference]: Start difference. First operand has 86 places, 79 transitions, 343 flow. Second operand 4 states and 724 transitions. [2023-08-03 20:02:27,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 168 transitions, 1058 flow [2023-08-03 20:02:29,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 168 transitions, 1042 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:02:29,684 INFO L231 Difference]: Finished difference. Result has 90 places, 81 transitions, 363 flow [2023-08-03 20:02:29,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=363, PETRI_PLACES=90, PETRI_TRANSITIONS=81} [2023-08-03 20:02:29,684 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 30 predicate places. [2023-08-03 20:02:29,684 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 81 transitions, 363 flow [2023-08-03 20:02:29,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 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 20:02:29,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:02:29,685 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, 1, 1, 1, 1, 1] [2023-08-03 20:02:29,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-03 20:02:29,685 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 20:02:29,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:02:29,685 INFO L85 PathProgramCache]: Analyzing trace with hash 295711051, now seen corresponding path program 1 times [2023-08-03 20:02:29,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:02:29,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661009110] [2023-08-03 20:02:29,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:02:29,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:02:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:02:29,785 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 20:02:29,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:02:29,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661009110] [2023-08-03 20:02:29,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661009110] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:02:29,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:02:29,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 20:02:29,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594219081] [2023-08-03 20:02:29,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:02:29,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 20:02:29,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:02:29,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 20:02:29,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 20:02:29,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 336 [2023-08-03 20:02:29,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 81 transitions, 363 flow. Second operand has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 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 20:02:29,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:02:29,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 336 [2023-08-03 20:02:29,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:02:50,891 INFO L124 PetriNetUnfolderBase]: 236864/290900 cut-off events. [2023-08-03 20:02:50,891 INFO L125 PetriNetUnfolderBase]: For 243012/257203 co-relation queries the response was YES. [2023-08-03 20:02:52,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 813697 conditions, 290900 events. 236864/290900 cut-off events. For 243012/257203 co-relation queries the response was YES. Maximal size of possible extension queue 5840. Compared 1571478 event pairs, 68805 based on Foata normal form. 18491/309391 useless extension candidates. Maximal degree in co-relation 812509. Up to 147148 conditions per place. [2023-08-03 20:02:53,613 INFO L140 encePairwiseOnDemand]: 332/336 looper letters, 178 selfloop transitions, 6 changer transitions 0/195 dead transitions. [2023-08-03 20:02:53,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 195 transitions, 1286 flow [2023-08-03 20:02:53,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:02:53,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:02:53,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 757 transitions. [2023-08-03 20:02:53,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632440476190477 [2023-08-03 20:02:53,615 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 757 transitions. [2023-08-03 20:02:53,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 757 transitions. [2023-08-03 20:02:53,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:02:53,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 757 transitions. [2023-08-03 20:02:53,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 189.25) internal successors, (757), 4 states have internal predecessors, (757), 0 states have call successors, (0), 0 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 20:02:53,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 20:02:53,617 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 20:02:53,618 INFO L175 Difference]: Start difference. First operand has 90 places, 81 transitions, 363 flow. Second operand 4 states and 757 transitions. [2023-08-03 20:02:53,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 195 transitions, 1286 flow [2023-08-03 20:02:59,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 195 transitions, 1273 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-03 20:02:59,663 INFO L231 Difference]: Finished difference. Result has 95 places, 85 transitions, 402 flow [2023-08-03 20:02:59,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=402, PETRI_PLACES=95, PETRI_TRANSITIONS=85} [2023-08-03 20:02:59,664 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 35 predicate places. [2023-08-03 20:02:59,664 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 85 transitions, 402 flow [2023-08-03 20:02:59,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 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 20:02:59,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:02:59,664 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, 1, 1, 1, 1, 1] [2023-08-03 20:02:59,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-03 20:02:59,665 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 20:02:59,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:02:59,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1357173493, now seen corresponding path program 1 times [2023-08-03 20:02:59,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:02:59,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138846277] [2023-08-03 20:02:59,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:02:59,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:02:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:02:59,878 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 20:02:59,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:02:59,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138846277] [2023-08-03 20:02:59,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138846277] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:02:59,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:02:59,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 20:02:59,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206587006] [2023-08-03 20:02:59,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:02:59,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:02:59,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:02:59,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:02:59,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:02:59,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 336 [2023-08-03 20:02:59,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 85 transitions, 402 flow. Second operand has 5 states, 5 states have (on average 155.4) internal successors, (777), 5 states have internal predecessors, (777), 0 states have call successors, (0), 0 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 20:02:59,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:02:59,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 336 [2023-08-03 20:02:59,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:03:43,722 INFO L124 PetriNetUnfolderBase]: 392731/491404 cut-off events. [2023-08-03 20:03:43,722 INFO L125 PetriNetUnfolderBase]: For 615809/640140 co-relation queries the response was YES. [2023-08-03 20:03:46,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1428414 conditions, 491404 events. 392731/491404 cut-off events. For 615809/640140 co-relation queries the response was YES. Maximal size of possible extension queue 10488. Compared 2973551 event pairs, 110285 based on Foata normal form. 37349/528753 useless extension candidates. Maximal degree in co-relation 1427789. Up to 201488 conditions per place. [2023-08-03 20:03:48,587 INFO L140 encePairwiseOnDemand]: 330/336 looper letters, 299 selfloop transitions, 13 changer transitions 0/322 dead transitions. [2023-08-03 20:03:48,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 322 transitions, 2195 flow [2023-08-03 20:03:48,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 20:03:48,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 20:03:48,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1131 transitions. [2023-08-03 20:03:48,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5610119047619048 [2023-08-03 20:03:48,590 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1131 transitions. [2023-08-03 20:03:48,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1131 transitions. [2023-08-03 20:03:48,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:03:48,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1131 transitions. [2023-08-03 20:03:48,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 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 20:03:48,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 336.0) internal successors, (2352), 7 states have internal predecessors, (2352), 0 states have call successors, (0), 0 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 20:03:48,594 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 336.0) internal successors, (2352), 7 states have internal predecessors, (2352), 0 states have call successors, (0), 0 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 20:03:48,594 INFO L175 Difference]: Start difference. First operand has 95 places, 85 transitions, 402 flow. Second operand 6 states and 1131 transitions. [2023-08-03 20:03:48,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 322 transitions, 2195 flow [2023-08-03 20:04:17,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 322 transitions, 2193 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 20:04:17,116 INFO L231 Difference]: Finished difference. Result has 104 places, 95 transitions, 524 flow [2023-08-03 20:04:17,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=524, PETRI_PLACES=104, PETRI_TRANSITIONS=95} [2023-08-03 20:04:17,117 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 44 predicate places. [2023-08-03 20:04:17,117 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 95 transitions, 524 flow [2023-08-03 20:04:17,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.4) internal successors, (777), 5 states have internal predecessors, (777), 0 states have call successors, (0), 0 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 20:04:17,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:04:17,117 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, 1, 1, 1, 1, 1] [2023-08-03 20:04:17,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-03 20:04:17,118 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 20:04:17,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:04:17,118 INFO L85 PathProgramCache]: Analyzing trace with hash 793826027, now seen corresponding path program 2 times [2023-08-03 20:04:17,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:04:17,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251633016] [2023-08-03 20:04:17,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:04:17,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:04:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:04:17,241 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-08-03 20:04:17,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:04:17,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251633016] [2023-08-03 20:04:17,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251633016] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:04:17,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:04:17,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 20:04:17,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275606519] [2023-08-03 20:04:17,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:04:17,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:04:17,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:04:17,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:04:17,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:04:17,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 336 [2023-08-03 20:04:17,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 95 transitions, 524 flow. Second operand has 5 states, 5 states have (on average 156.4) internal successors, (782), 5 states have internal predecessors, (782), 0 states have call successors, (0), 0 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 20:04:17,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:04:17,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 336 [2023-08-03 20:04:17,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:05:16,934 INFO L124 PetriNetUnfolderBase]: 489146/614161 cut-off events. [2023-08-03 20:05:16,934 INFO L125 PetriNetUnfolderBase]: For 1104652/1135714 co-relation queries the response was YES. [2023-08-03 20:05:21,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1933250 conditions, 614161 events. 489146/614161 cut-off events. For 1104652/1135714 co-relation queries the response was YES. Maximal size of possible extension queue 13268. Compared 3860157 event pairs, 138171 based on Foata normal form. 40680/654840 useless extension candidates. Maximal degree in co-relation 1929953. Up to 248849 conditions per place. [2023-08-03 20:05:23,506 INFO L140 encePairwiseOnDemand]: 331/336 looper letters, 253 selfloop transitions, 13 changer transitions 0/276 dead transitions. [2023-08-03 20:05:23,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 276 transitions, 1970 flow [2023-08-03 20:05:23,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:05:23,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:05:23,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 944 transitions. [2023-08-03 20:05:23,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2023-08-03 20:05:23,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 944 transitions. [2023-08-03 20:05:23,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 944 transitions. [2023-08-03 20:05:23,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:05:23,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 944 transitions. [2023-08-03 20:05:23,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 188.8) internal successors, (944), 5 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:05:23,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 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 20:05:23,511 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 336.0) internal successors, (2016), 6 states have internal predecessors, (2016), 0 states have call successors, (0), 0 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 20:05:23,511 INFO L175 Difference]: Start difference. First operand has 104 places, 95 transitions, 524 flow. Second operand 5 states and 944 transitions. [2023-08-03 20:05:23,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 276 transitions, 1970 flow [2023-08-03 20:06:34,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 276 transitions, 1950 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-08-03 20:06:34,869 INFO L231 Difference]: Finished difference. Result has 111 places, 98 transitions, 585 flow [2023-08-03 20:06:34,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=585, PETRI_PLACES=111, PETRI_TRANSITIONS=98} [2023-08-03 20:06:34,870 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 51 predicate places. [2023-08-03 20:06:34,870 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 98 transitions, 585 flow [2023-08-03 20:06:34,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 156.4) internal successors, (782), 5 states have internal predecessors, (782), 0 states have call successors, (0), 0 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 20:06:34,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:06:34,870 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, 1, 1, 1, 1, 1] [2023-08-03 20:06:34,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-03 20:06:34,870 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 20:06:34,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:06:34,871 INFO L85 PathProgramCache]: Analyzing trace with hash 436243287, now seen corresponding path program 1 times [2023-08-03 20:06:34,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:06:34,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063332258] [2023-08-03 20:06:34,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:34,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:06:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:34,960 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 20:06:34,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:06:34,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063332258] [2023-08-03 20:06:34,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063332258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:06:34,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:06:34,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 20:06:34,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901547430] [2023-08-03 20:06:34,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:06:34,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 20:06:34,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:06:34,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 20:06:34,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 20:06:34,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 336 [2023-08-03 20:06:34,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 98 transitions, 585 flow. Second operand has 4 states, 4 states have (on average 160.25) internal successors, (641), 4 states have internal predecessors, (641), 0 states have call successors, (0), 0 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 20:06:34,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:06:34,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 336 [2023-08-03 20:06:34,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:07:33,053 INFO L124 PetriNetUnfolderBase]: 474560/595562 cut-off events. [2023-08-03 20:07:33,053 INFO L125 PetriNetUnfolderBase]: For 1424120/1497635 co-relation queries the response was YES. [2023-08-03 20:07:37,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1979639 conditions, 595562 events. 474560/595562 cut-off events. For 1424120/1497635 co-relation queries the response was YES. Maximal size of possible extension queue 13219. Compared 3721959 event pairs, 173422 based on Foata normal form. 65466/658803 useless extension candidates. Maximal degree in co-relation 1976252. Up to 288859 conditions per place. [2023-08-03 20:07:39,632 INFO L140 encePairwiseOnDemand]: 332/336 looper letters, 187 selfloop transitions, 10 changer transitions 0/211 dead transitions. [2023-08-03 20:07:39,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 211 transitions, 1552 flow [2023-08-03 20:07:39,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:07:39,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:07:39,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 757 transitions. [2023-08-03 20:07:39,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632440476190477 [2023-08-03 20:07:39,634 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 757 transitions. [2023-08-03 20:07:39,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 757 transitions. [2023-08-03 20:07:39,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:07:39,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 757 transitions. [2023-08-03 20:07:39,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 189.25) internal successors, (757), 4 states have internal predecessors, (757), 0 states have call successors, (0), 0 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 20:07:39,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 20:07:39,636 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 336.0) internal successors, (1680), 5 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 20:07:39,636 INFO L175 Difference]: Start difference. First operand has 111 places, 98 transitions, 585 flow. Second operand 4 states and 757 transitions. [2023-08-03 20:07:39,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 211 transitions, 1552 flow Received shutdown request... [2023-08-03 20:08:32,053 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 20:08:33,060 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 [2023-08-03 20:08:33,154 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 20:08:33,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-03 20:08:33,154 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-03 20:08:33,154 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 20:08:33,154 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 20:08:33,155 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 20:08:33,155 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 20:08:33,156 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 20:08:33,156 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 20:08:33,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 08:08:33 BasicIcfg [2023-08-03 20:08:33,159 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 20:08:33,159 INFO L158 Benchmark]: Toolchain (without parser) took 667675.43ms. Allocated memory was 629.1MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 579.6MB in the beginning and 9.1GB in the end (delta: -8.5GB). Peak memory consumption was 9.0GB. Max. memory is 16.0GB. [2023-08-03 20:08:33,160 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 373.3MB. Free memory is still 322.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 20:08:33,160 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.07ms. Allocated memory is still 629.1MB. Free memory was 579.3MB in the beginning and 568.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-03 20:08:33,160 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.19ms. Allocated memory is still 629.1MB. Free memory was 568.1MB in the beginning and 566.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 20:08:33,160 INFO L158 Benchmark]: Boogie Preprocessor took 22.50ms. Allocated memory is still 629.1MB. Free memory was 566.2MB in the beginning and 564.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 20:08:33,161 INFO L158 Benchmark]: RCFGBuilder took 459.91ms. Allocated memory is still 629.1MB. Free memory was 564.7MB in the beginning and 549.1MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 20:08:33,161 INFO L158 Benchmark]: TraceAbstraction took 666930.13ms. Allocated memory was 629.1MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 548.4MB in the beginning and 9.1GB in the end (delta: -8.5GB). Peak memory consumption was 9.0GB. Max. memory is 16.0GB. [2023-08-03 20:08:33,162 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 373.3MB. Free memory is still 322.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 225.07ms. Allocated memory is still 629.1MB. Free memory was 579.3MB in the beginning and 568.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 29.19ms. Allocated memory is still 629.1MB. Free memory was 568.1MB in the beginning and 566.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.50ms. Allocated memory is still 629.1MB. Free memory was 566.2MB in the beginning and 564.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 459.91ms. Allocated memory is still 629.1MB. Free memory was 564.7MB in the beginning and 549.1MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 666930.13ms. Allocated memory was 629.1MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 548.4MB in the beginning and 9.1GB in the end (delta: -8.5GB). Peak memory consumption was 9.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 138 PlacesBefore, 42 PlacesAfterwards, 153 TransitionsBefore, 47 TransitionsAfterwards, 5220 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 19 ConcurrentYvCompositions, 10 ChoiceCompositions, 120 TotalNumberOfCompositions, 7970 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7848, independent: 7837, independent conditional: 0, independent unconditional: 7837, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2852, independent: 2844, independent conditional: 0, independent unconditional: 2844, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7848, independent: 4993, independent conditional: 0, independent unconditional: 4993, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 2852, unknown conditional: 0, unknown unconditional: 2852] , Statistics on independence cache: Total cache size (in pairs): 165, Positive cache size: 165, Positive conditional cache size: 0, Positive unconditional cache size: 165, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 171 PlacesBefore, 60 PlacesAfterwards, 195 TransitionsBefore, 71 TransitionsAfterwards, 13500 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 76 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 25 ConcurrentYvCompositions, 13 ChoiceCompositions, 141 TotalNumberOfCompositions, 24306 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 23828, independent: 23814, independent conditional: 0, independent unconditional: 23814, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7251, independent: 7242, independent conditional: 0, independent unconditional: 7242, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 23828, independent: 16572, independent conditional: 0, independent unconditional: 16572, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 7251, unknown conditional: 0, unknown unconditional: 7251] , Statistics on independence cache: Total cache size (in pairs): 588, Positive cache size: 588, Positive conditional cache size: 0, Positive unconditional cache size: 588, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 159 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: 3.1s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=136occurred 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, 0.0s 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, 186 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: 663.7s, OverallIterations: 21, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 653.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1610 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1382 mSDsluCounter, 73 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4123 IncrementalHoareTripleChecker+Invalid, 4205 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 32 mSDtfsCounter, 4123 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 749 GetRequests, 674 SyntacticMatches, 12 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=585occurred in iteration=20, InterpolantAutomatonStates: 79, 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: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 1278 NumberOfCodeBlocks, 1278 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1488 ConstructedInterpolants, 0 QuantifiedInterpolants, 3392 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2263 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 41 InterpolantComputations, 15 PerfectInterpolantSequences, 674/712 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown