/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-exp-term-symm.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:36:42,667 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:36:42,745 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:36:42,751 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:36:42,751 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:36:42,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:36:42,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:36:42,781 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:36:42,781 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:36:42,785 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:36:42,786 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:36:42,786 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:36:42,787 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:36:42,788 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:36:42,788 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:36:42,789 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:36:42,789 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:36:42,789 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:36:42,789 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:36:42,790 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:36:42,790 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:36:42,790 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:36:42,790 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:36:42,791 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:36:42,791 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:36:42,791 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:36:42,791 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:36:42,792 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:36:42,792 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:36:42,792 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:36:42,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:36:42,793 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:36:42,793 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:36:42,794 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:36:42,794 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:36:42,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:36:42,794 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:36:42,794 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:36:42,794 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:36:42,795 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:36:42,795 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:36:42,795 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:36:43,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:36:43,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:36:43,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:36:43,036 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:36:43,037 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:36:43,038 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-exp-term-symm.wvr_bound2.c [2023-08-03 19:36:44,136 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:36:44,340 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:36:44,341 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-exp-term-symm.wvr_bound2.c [2023-08-03 19:36:44,347 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7df51942e/fc506196f6bf4c3f855ee6a6d3d4a7d5/FLAG5c0961a6f [2023-08-03 19:36:44,358 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7df51942e/fc506196f6bf4c3f855ee6a6d3d4a7d5 [2023-08-03 19:36:44,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:36:44,365 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:36:44,366 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:36:44,366 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:36:44,369 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:36:44,370 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:36:44" (1/1) ... [2023-08-03 19:36:44,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7f89b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:36:44, skipping insertion in model container [2023-08-03 19:36:44,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:36:44" (1/1) ... [2023-08-03 19:36:44,392 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:36:44,562 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-exp-term-symm.wvr_bound2.c[2790,2803] [2023-08-03 19:36:44,565 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:36:44,573 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:36:44,593 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-exp-term-symm.wvr_bound2.c[2790,2803] [2023-08-03 19:36:44,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:36:44,608 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:36:44,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:36:44 WrapperNode [2023-08-03 19:36:44,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:36:44,610 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:36:44,610 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:36:44,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:36:44,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:36:44" (1/1) ... [2023-08-03 19:36:44,622 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:36:44" (1/1) ... [2023-08-03 19:36:44,642 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 164 [2023-08-03 19:36:44,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:36:44,643 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:36:44,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:36:44,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:36:44,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:36:44" (1/1) ... [2023-08-03 19:36:44,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:36:44" (1/1) ... [2023-08-03 19:36:44,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:36:44" (1/1) ... [2023-08-03 19:36:44,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:36:44" (1/1) ... [2023-08-03 19:36:44,664 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:36:44" (1/1) ... [2023-08-03 19:36:44,667 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:36:44" (1/1) ... [2023-08-03 19:36:44,669 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:36:44" (1/1) ... [2023-08-03 19:36:44,670 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:36:44" (1/1) ... [2023-08-03 19:36:44,673 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:36:44,674 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:36:44,674 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:36:44,674 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:36:44,675 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:36:44" (1/1) ... [2023-08-03 19:36:44,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:36:44,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:44,708 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 19:36:44,736 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 19:36:44,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:36:44,755 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:36:44,755 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:36:44,755 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:36:44,755 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:36:44,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:36:44,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:36:44,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:36:44,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:36:44,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:36:44,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:36:44,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:36:44,759 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 19:36:44,875 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:36:44,882 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:36:45,128 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:36:45,135 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:36:45,136 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 19:36:45,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:36:45 BoogieIcfgContainer [2023-08-03 19:36:45,138 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:36:45,140 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:36:45,140 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:36:45,143 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:36:45,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:36:44" (1/3) ... [2023-08-03 19:36:45,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c102b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:36:45, skipping insertion in model container [2023-08-03 19:36:45,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:36:44" (2/3) ... [2023-08-03 19:36:45,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c102b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:36:45, skipping insertion in model container [2023-08-03 19:36:45,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:36:45" (3/3) ... [2023-08-03 19:36:45,146 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-exp-term-symm.wvr_bound2.c [2023-08-03 19:36:45,152 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:36:45,161 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:36:45,161 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:36:45,161 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:36:45,240 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 19:36:45,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 187 transitions, 396 flow [2023-08-03 19:36:45,461 INFO L124 PetriNetUnfolderBase]: 49/392 cut-off events. [2023-08-03 19:36:45,461 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 19:36:45,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 392 events. 49/392 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1725 event pairs, 0 based on Foata normal form. 0/333 useless extension candidates. Maximal degree in co-relation 200. Up to 8 conditions per place. [2023-08-03 19:36:45,478 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 187 transitions, 396 flow [2023-08-03 19:36:45,489 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 187 transitions, 396 flow [2023-08-03 19:36:45,492 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:36:45,503 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 187 transitions, 396 flow [2023-08-03 19:36:45,506 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 187 transitions, 396 flow [2023-08-03 19:36:45,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 187 transitions, 396 flow [2023-08-03 19:36:45,579 INFO L124 PetriNetUnfolderBase]: 49/392 cut-off events. [2023-08-03 19:36:45,579 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 19:36:45,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 392 events. 49/392 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1725 event pairs, 0 based on Foata normal form. 0/333 useless extension candidates. Maximal degree in co-relation 200. Up to 8 conditions per place. [2023-08-03 19:36:45,595 INFO L119 LiptonReduction]: Number of co-enabled transitions 13494 [2023-08-03 19:36:50,256 INFO L134 LiptonReduction]: Checked pairs total: 13752 [2023-08-03 19:36:50,256 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-08-03 19:36:50,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:36:50,274 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;@24d8296a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:36:50,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:36:50,289 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:36:50,289 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2023-08-03 19:36:50,289 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:36:50,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:50,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 19:36:50,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:36:50,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:50,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1481065014, now seen corresponding path program 1 times [2023-08-03 19:36:50,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:50,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709498084] [2023-08-03 19:36:50,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:50,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:50,458 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 19:36:50,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:50,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709498084] [2023-08-03 19:36:50,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709498084] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:36:50,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:36:50,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:36:50,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904597921] [2023-08-03 19:36:50,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:36:50,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:36:50,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:50,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:36:50,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:36:50,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 398 [2023-08-03 19:36:50,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 30 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 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 19:36:50,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:50,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 398 [2023-08-03 19:36:50,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:50,625 INFO L124 PetriNetUnfolderBase]: 75/195 cut-off events. [2023-08-03 19:36:50,626 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-08-03 19:36:50,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 195 events. 75/195 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 708 event pairs, 30 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 282. Up to 178 conditions per place. [2023-08-03 19:36:50,628 INFO L140 encePairwiseOnDemand]: 393/398 looper letters, 24 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2023-08-03 19:36:50,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 30 transitions, 134 flow [2023-08-03 19:36:50,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:36:50,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:36:50,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 524 transitions. [2023-08-03 19:36:50,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388609715242881 [2023-08-03 19:36:50,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 524 transitions. [2023-08-03 19:36:50,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 524 transitions. [2023-08-03 19:36:50,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:50,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 524 transitions. [2023-08-03 19:36:50,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 19:36:50,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 398.0) internal successors, (1592), 4 states have internal predecessors, (1592), 0 states have call successors, (0), 0 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 19:36:50,658 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 398.0) internal successors, (1592), 4 states have internal predecessors, (1592), 0 states have call successors, (0), 0 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 19:36:50,660 INFO L175 Difference]: Start difference. First operand has 30 places, 30 transitions, 82 flow. Second operand 3 states and 524 transitions. [2023-08-03 19:36:50,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 30 transitions, 134 flow [2023-08-03 19:36:50,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:36:50,664 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 86 flow [2023-08-03 19:36:50,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=398, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-08-03 19:36:50,669 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-08-03 19:36:50,669 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 86 flow [2023-08-03 19:36:50,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 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 19:36:50,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:50,670 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:36:50,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:36:50,671 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] === [2023-08-03 19:36:50,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:50,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1547666712, now seen corresponding path program 1 times [2023-08-03 19:36:50,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:50,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853034449] [2023-08-03 19:36:50,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:50,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:36:50,692 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:36:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:36:50,720 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:36:50,721 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:36:50,722 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 19:36:50,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 19:36:50,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 19:36:50,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:36:50,724 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 19:36:50,726 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:36:50,726 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:36:50,760 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 19:36:50,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 271 transitions, 590 flow [2023-08-03 19:36:50,939 INFO L124 PetriNetUnfolderBase]: 189/1256 cut-off events. [2023-08-03 19:36:50,939 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 19:36:50,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1353 conditions, 1256 events. 189/1256 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7634 event pairs, 1 based on Foata normal form. 0/1064 useless extension candidates. Maximal degree in co-relation 723. Up to 32 conditions per place. [2023-08-03 19:36:50,962 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 271 transitions, 590 flow [2023-08-03 19:36:50,972 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 271 transitions, 590 flow [2023-08-03 19:36:50,972 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:36:50,973 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 245 places, 271 transitions, 590 flow [2023-08-03 19:36:50,973 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 245 places, 271 transitions, 590 flow [2023-08-03 19:36:50,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 271 transitions, 590 flow [2023-08-03 19:36:51,150 INFO L124 PetriNetUnfolderBase]: 189/1256 cut-off events. [2023-08-03 19:36:51,150 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 19:36:51,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1353 conditions, 1256 events. 189/1256 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7634 event pairs, 1 based on Foata normal form. 0/1064 useless extension candidates. Maximal degree in co-relation 723. Up to 32 conditions per place. [2023-08-03 19:36:51,249 INFO L119 LiptonReduction]: Number of co-enabled transitions 40716 [2023-08-03 19:36:57,911 INFO L134 LiptonReduction]: Checked pairs total: 43034 [2023-08-03 19:36:57,911 INFO L136 LiptonReduction]: Total number of compositions: 314 [2023-08-03 19:36:57,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:36:57,922 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;@24d8296a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:36:57,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:36:57,925 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:36:57,925 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2023-08-03 19:36:57,926 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:36:57,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:57,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 19:36:57,927 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:36:57,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:57,928 INFO L85 PathProgramCache]: Analyzing trace with hash -351491052, now seen corresponding path program 1 times [2023-08-03 19:36:57,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:57,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097478226] [2023-08-03 19:36:57,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:57,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:58,013 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 19:36:58,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:58,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097478226] [2023-08-03 19:36:58,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097478226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:36:58,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:36:58,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:36:58,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487564021] [2023-08-03 19:36:58,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:36:58,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:36:58,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:58,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:36:58,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:36:58,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 585 [2023-08-03 19:36:58,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 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 19:36:58,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:58,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 585 [2023-08-03 19:36:58,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:58,513 INFO L124 PetriNetUnfolderBase]: 1269/2320 cut-off events. [2023-08-03 19:36:58,513 INFO L125 PetriNetUnfolderBase]: For 370/370 co-relation queries the response was YES. [2023-08-03 19:36:58,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4732 conditions, 2320 events. 1269/2320 cut-off events. For 370/370 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 12513 event pairs, 803 based on Foata normal form. 81/2184 useless extension candidates. Maximal degree in co-relation 1824. Up to 2103 conditions per place. [2023-08-03 19:36:58,523 INFO L140 encePairwiseOnDemand]: 580/585 looper letters, 32 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-03 19:36:58,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 198 flow [2023-08-03 19:36:58,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:36:58,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:36:58,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 754 transitions. [2023-08-03 19:36:58,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2023-08-03 19:36:58,529 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 754 transitions. [2023-08-03 19:36:58,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 754 transitions. [2023-08-03 19:36:58,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:58,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 754 transitions. [2023-08-03 19:36:58,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 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 19:36:58,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 585.0) internal successors, (2340), 4 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:58,536 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 585.0) internal successors, (2340), 4 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:58,537 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 128 flow. Second operand 3 states and 754 transitions. [2023-08-03 19:36:58,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 198 flow [2023-08-03 19:36:58,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 198 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:36:58,541 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 136 flow [2023-08-03 19:36:58,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=585, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-08-03 19:36:58,542 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2023-08-03 19:36:58,542 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 136 flow [2023-08-03 19:36:58,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 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 19:36:58,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:58,543 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:36:58,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 19:36:58,543 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] === [2023-08-03 19:36:58,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:58,544 INFO L85 PathProgramCache]: Analyzing trace with hash 193920979, now seen corresponding path program 1 times [2023-08-03 19:36:58,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:58,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735034941] [2023-08-03 19:36:58,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:58,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:58,676 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 19:36:58,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:58,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735034941] [2023-08-03 19:36:58,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735034941] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:36:58,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266980382] [2023-08-03 19:36:58,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:58,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:58,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:58,685 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 19:36:58,716 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 19:36:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:58,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:36:58,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:36:58,838 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 19:36:58,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:36:58,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266980382] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:36:58,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:36:58,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:36:58,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280217681] [2023-08-03 19:36:58,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:36:58,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:36:58,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:58,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:36:58,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:36:58,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 585 [2023-08-03 19:36:58,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 239.6) internal successors, (1198), 5 states have internal predecessors, (1198), 0 states have call successors, (0), 0 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 19:36:58,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:58,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 585 [2023-08-03 19:36:58,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:59,308 INFO L124 PetriNetUnfolderBase]: 1265/2312 cut-off events. [2023-08-03 19:36:59,309 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2023-08-03 19:36:59,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4729 conditions, 2312 events. 1265/2312 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 12489 event pairs, 532 based on Foata normal form. 4/2105 useless extension candidates. Maximal degree in co-relation 2710. Up to 2082 conditions per place. [2023-08-03 19:36:59,320 INFO L140 encePairwiseOnDemand]: 581/585 looper letters, 33 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-08-03 19:36:59,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 216 flow [2023-08-03 19:36:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:36:59,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:36:59,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1228 transitions. [2023-08-03 19:36:59,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4198290598290598 [2023-08-03 19:36:59,323 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1228 transitions. [2023-08-03 19:36:59,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1228 transitions. [2023-08-03 19:36:59,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:59,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1228 transitions. [2023-08-03 19:36:59,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 245.6) internal successors, (1228), 5 states have internal predecessors, (1228), 0 states have call successors, (0), 0 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 19:36:59,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 585.0) internal successors, (3510), 6 states have internal predecessors, (3510), 0 states have call successors, (0), 0 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 19:36:59,332 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 585.0) internal successors, (3510), 6 states have internal predecessors, (3510), 0 states have call successors, (0), 0 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 19:36:59,332 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 136 flow. Second operand 5 states and 1228 transitions. [2023-08-03 19:36:59,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 216 flow [2023-08-03 19:36:59,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 208 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:36:59,334 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 143 flow [2023-08-03 19:36:59,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=585, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=143, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-08-03 19:36:59,335 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2023-08-03 19:36:59,335 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 143 flow [2023-08-03 19:36:59,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 239.6) internal successors, (1198), 5 states have internal predecessors, (1198), 0 states have call successors, (0), 0 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 19:36:59,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:59,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:36:59,348 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 19:36:59,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:59,542 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:36:59,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:59,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1662003185, now seen corresponding path program 1 times [2023-08-03 19:36:59,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:59,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445182666] [2023-08-03 19:36:59,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:59,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:59,604 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 19:36:59,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:59,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445182666] [2023-08-03 19:36:59,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445182666] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:36:59,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449422896] [2023-08-03 19:36:59,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:59,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:59,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:59,606 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 19:36:59,624 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 19:36:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:59,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:36:59,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:36:59,706 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 19:36:59,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:36:59,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449422896] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:36:59,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:36:59,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:36:59,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223899467] [2023-08-03 19:36:59,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:36:59,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:36:59,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:59,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:36:59,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:36:59,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 585 [2023-08-03 19:36:59,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 0 states have call successors, (0), 0 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 19:36:59,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:59,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 585 [2023-08-03 19:36:59,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:00,169 INFO L124 PetriNetUnfolderBase]: 1259/2336 cut-off events. [2023-08-03 19:37:00,170 INFO L125 PetriNetUnfolderBase]: For 292/292 co-relation queries the response was YES. [2023-08-03 19:37:00,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4712 conditions, 2336 events. 1259/2336 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 12850 event pairs, 802 based on Foata normal form. 0/2131 useless extension candidates. Maximal degree in co-relation 1956. Up to 2049 conditions per place. [2023-08-03 19:37:00,182 INFO L140 encePairwiseOnDemand]: 582/585 looper letters, 35 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-08-03 19:37:00,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 229 flow [2023-08-03 19:37:00,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:37:00,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:37:00,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 754 transitions. [2023-08-03 19:37:00,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2023-08-03 19:37:00,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 754 transitions. [2023-08-03 19:37:00,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 754 transitions. [2023-08-03 19:37:00,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:00,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 754 transitions. [2023-08-03 19:37:00,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 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 19:37:00,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 585.0) internal successors, (2340), 4 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:00,190 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 585.0) internal successors, (2340), 4 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:00,191 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 143 flow. Second operand 3 states and 754 transitions. [2023-08-03 19:37:00,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 229 flow [2023-08-03 19:37:00,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 222 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:37:00,195 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 151 flow [2023-08-03 19:37:00,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=585, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2023-08-03 19:37:00,197 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2023-08-03 19:37:00,197 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 151 flow [2023-08-03 19:37:00,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 0 states have call successors, (0), 0 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 19:37:00,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:00,198 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:37:00,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 19:37:00,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:00,403 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:37:00,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:00,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1391774130, now seen corresponding path program 1 times [2023-08-03 19:37:00,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:00,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548311838] [2023-08-03 19:37:00,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:00,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:00,479 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 19:37:00,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:00,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548311838] [2023-08-03 19:37:00,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548311838] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:37:00,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916611772] [2023-08-03 19:37:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:00,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:00,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:37:00,481 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 19:37:00,484 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 19:37:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:00,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:37:00,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:37:00,566 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 19:37:00,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:37:00,583 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 19:37:00,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916611772] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:37:00,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:37:00,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:37:00,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022365963] [2023-08-03 19:37:00,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:37:00,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:37:00,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:00,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:37:00,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:37:00,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 585 [2023-08-03 19:37:00,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 240.6) internal successors, (1203), 5 states have internal predecessors, (1203), 0 states have call successors, (0), 0 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 19:37:00,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:00,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 585 [2023-08-03 19:37:00,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:01,003 INFO L124 PetriNetUnfolderBase]: 1203/2230 cut-off events. [2023-08-03 19:37:01,004 INFO L125 PetriNetUnfolderBase]: For 278/278 co-relation queries the response was YES. [2023-08-03 19:37:01,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4536 conditions, 2230 events. 1203/2230 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 11983 event pairs, 526 based on Foata normal form. 2/2065 useless extension candidates. Maximal degree in co-relation 1862. Up to 1981 conditions per place. [2023-08-03 19:37:01,015 INFO L140 encePairwiseOnDemand]: 582/585 looper letters, 34 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2023-08-03 19:37:01,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 226 flow [2023-08-03 19:37:01,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:37:01,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:37:01,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 989 transitions. [2023-08-03 19:37:01,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42264957264957265 [2023-08-03 19:37:01,019 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 989 transitions. [2023-08-03 19:37:01,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 989 transitions. [2023-08-03 19:37:01,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:01,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 989 transitions. [2023-08-03 19:37:01,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 247.25) internal successors, (989), 4 states have internal predecessors, (989), 0 states have call successors, (0), 0 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 19:37:01,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 585.0) internal successors, (2925), 5 states have internal predecessors, (2925), 0 states have call successors, (0), 0 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 19:37:01,026 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 585.0) internal successors, (2925), 5 states have internal predecessors, (2925), 0 states have call successors, (0), 0 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 19:37:01,026 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 151 flow. Second operand 4 states and 989 transitions. [2023-08-03 19:37:01,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 226 flow [2023-08-03 19:37:01,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:37:01,029 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 146 flow [2023-08-03 19:37:01,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=585, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2023-08-03 19:37:01,029 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2023-08-03 19:37:01,030 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 146 flow [2023-08-03 19:37:01,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 240.6) internal successors, (1203), 5 states have internal predecessors, (1203), 0 states have call successors, (0), 0 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 19:37:01,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:01,031 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:37:01,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 19:37:01,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:01,236 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] === [2023-08-03 19:37:01,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:01,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1557767443, now seen corresponding path program 1 times [2023-08-03 19:37:01,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:01,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984929604] [2023-08-03 19:37:01,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:01,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:01,306 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 19:37:01,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:01,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984929604] [2023-08-03 19:37:01,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984929604] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:37:01,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976948135] [2023-08-03 19:37:01,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:01,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:01,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:37:01,308 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 19:37:01,311 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 19:37:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:01,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:37:01,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:37:01,416 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 19:37:01,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:37:01,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976948135] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:37:01,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:37:01,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:37:01,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904297180] [2023-08-03 19:37:01,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:37:01,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:37:01,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:01,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:37:01,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:37:01,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 585 [2023-08-03 19:37:01,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 240.6) internal successors, (1203), 5 states have internal predecessors, (1203), 0 states have call successors, (0), 0 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 19:37:01,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:01,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 585 [2023-08-03 19:37:01,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:01,827 INFO L124 PetriNetUnfolderBase]: 1171/2174 cut-off events. [2023-08-03 19:37:01,827 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2023-08-03 19:37:01,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4415 conditions, 2174 events. 1171/2174 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 11622 event pairs, 32 based on Foata normal form. 16/2023 useless extension candidates. Maximal degree in co-relation 2558. Up to 1812 conditions per place. [2023-08-03 19:37:01,837 INFO L140 encePairwiseOnDemand]: 581/585 looper letters, 40 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2023-08-03 19:37:01,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 252 flow [2023-08-03 19:37:01,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:37:01,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:37:01,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1234 transitions. [2023-08-03 19:37:01,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4218803418803419 [2023-08-03 19:37:01,841 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1234 transitions. [2023-08-03 19:37:01,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1234 transitions. [2023-08-03 19:37:01,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:01,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1234 transitions. [2023-08-03 19:37:01,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 246.8) internal successors, (1234), 5 states have internal predecessors, (1234), 0 states have call successors, (0), 0 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 19:37:01,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 585.0) internal successors, (3510), 6 states have internal predecessors, (3510), 0 states have call successors, (0), 0 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 19:37:01,848 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 585.0) internal successors, (3510), 6 states have internal predecessors, (3510), 0 states have call successors, (0), 0 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 19:37:01,848 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 146 flow. Second operand 5 states and 1234 transitions. [2023-08-03 19:37:01,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 252 flow [2023-08-03 19:37:01,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 240 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:37:01,850 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 149 flow [2023-08-03 19:37:01,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=585, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2023-08-03 19:37:01,851 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2023-08-03 19:37:01,851 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 149 flow [2023-08-03 19:37:01,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 240.6) internal successors, (1203), 5 states have internal predecessors, (1203), 0 states have call successors, (0), 0 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 19:37:01,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:01,852 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:37:01,863 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 19:37:02,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:02,057 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:37:02,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:02,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1665609209, now seen corresponding path program 1 times [2023-08-03 19:37:02,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:02,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119044633] [2023-08-03 19:37:02,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:02,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:02,104 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:37:02,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:02,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119044633] [2023-08-03 19:37:02,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119044633] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:37:02,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531007876] [2023-08-03 19:37:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:02,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:02,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:37:02,109 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 19:37:02,111 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 19:37:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:02,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:37:02,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:37:02,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 19:37:02,199 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:37:02,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531007876] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:37:02,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:37:02,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:37:02,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541757615] [2023-08-03 19:37:02,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:37:02,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:37:02,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:02,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:37:02,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:37:02,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 585 [2023-08-03 19:37:02,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 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 19:37:02,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:02,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 585 [2023-08-03 19:37:02,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:02,565 INFO L124 PetriNetUnfolderBase]: 971/1854 cut-off events. [2023-08-03 19:37:02,565 INFO L125 PetriNetUnfolderBase]: For 346/346 co-relation queries the response was YES. [2023-08-03 19:37:02,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3823 conditions, 1854 events. 971/1854 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9782 event pairs, 695 based on Foata normal form. 0/1719 useless extension candidates. Maximal degree in co-relation 2276. Up to 1425 conditions per place. [2023-08-03 19:37:02,574 INFO L140 encePairwiseOnDemand]: 582/585 looper letters, 41 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2023-08-03 19:37:02,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 49 transitions, 265 flow [2023-08-03 19:37:02,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:37:02,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:37:02,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 759 transitions. [2023-08-03 19:37:02,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324786324786325 [2023-08-03 19:37:02,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 759 transitions. [2023-08-03 19:37:02,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 759 transitions. [2023-08-03 19:37:02,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:02,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 759 transitions. [2023-08-03 19:37:02,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 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 19:37:02,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 585.0) internal successors, (2340), 4 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:02,582 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 585.0) internal successors, (2340), 4 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:02,582 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 149 flow. Second operand 3 states and 759 transitions. [2023-08-03 19:37:02,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 49 transitions, 265 flow [2023-08-03 19:37:02,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 258 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:37:02,585 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 157 flow [2023-08-03 19:37:02,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=585, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-08-03 19:37:02,586 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2023-08-03 19:37:02,587 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 157 flow [2023-08-03 19:37:02,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 0 states have call successors, (0), 0 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 19:37:02,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:02,587 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, 1, 1] [2023-08-03 19:37:02,595 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 19:37:02,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:02,792 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:37:02,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:02,792 INFO L85 PathProgramCache]: Analyzing trace with hash -139374634, now seen corresponding path program 1 times [2023-08-03 19:37:02,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:02,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019963583] [2023-08-03 19:37:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:02,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:02,883 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 19:37:02,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:02,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019963583] [2023-08-03 19:37:02,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019963583] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:37:02,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388886332] [2023-08-03 19:37:02,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:02,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:02,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:37:02,885 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 19:37:02,912 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 19:37:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:02,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:37:02,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:37:02,975 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 19:37:02,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:37:02,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388886332] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:37:02,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:37:02,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:37:02,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132816525] [2023-08-03 19:37:02,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:37:02,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:37:02,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:02,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:37:02,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:37:02,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 585 [2023-08-03 19:37:02,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 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 19:37:02,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:02,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 585 [2023-08-03 19:37:02,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:03,308 INFO L124 PetriNetUnfolderBase]: 882/1721 cut-off events. [2023-08-03 19:37:03,308 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2023-08-03 19:37:03,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3777 conditions, 1721 events. 882/1721 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 8909 event pairs, 612 based on Foata normal form. 0/1683 useless extension candidates. Maximal degree in co-relation 2335. Up to 1169 conditions per place. [2023-08-03 19:37:03,317 INFO L140 encePairwiseOnDemand]: 582/585 looper letters, 43 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-03 19:37:03,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 275 flow [2023-08-03 19:37:03,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:37:03,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:37:03,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 759 transitions. [2023-08-03 19:37:03,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324786324786325 [2023-08-03 19:37:03,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 759 transitions. [2023-08-03 19:37:03,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 759 transitions. [2023-08-03 19:37:03,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:03,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 759 transitions. [2023-08-03 19:37:03,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 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 19:37:03,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 585.0) internal successors, (2340), 4 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:03,326 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 585.0) internal successors, (2340), 4 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:03,326 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 157 flow. Second operand 3 states and 759 transitions. [2023-08-03 19:37:03,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 275 flow [2023-08-03 19:37:03,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 272 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:37:03,328 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 166 flow [2023-08-03 19:37:03,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=585, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-08-03 19:37:03,329 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2023-08-03 19:37:03,329 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 166 flow [2023-08-03 19:37:03,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 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 19:37:03,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:03,330 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, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:37:03,337 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 19:37:03,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:03,535 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:37:03,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:03,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1146866355, now seen corresponding path program 1 times [2023-08-03 19:37:03,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:03,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232009350] [2023-08-03 19:37:03,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:03,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:03,622 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 19:37:03,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:03,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232009350] [2023-08-03 19:37:03,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232009350] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:37:03,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930496653] [2023-08-03 19:37:03,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:03,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:03,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:37:03,631 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 19:37:03,633 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 19:37:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:03,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:37:03,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:37:03,723 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 19:37:03,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:37:03,742 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 19:37:03,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930496653] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:37:03,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:37:03,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:37:03,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870638723] [2023-08-03 19:37:03,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:37:03,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:37:03,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:03,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:37:03,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:37:03,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 585 [2023-08-03 19:37:03,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:03,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:03,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 585 [2023-08-03 19:37:03,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:04,097 INFO L124 PetriNetUnfolderBase]: 834/1633 cut-off events. [2023-08-03 19:37:04,098 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2023-08-03 19:37:04,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3699 conditions, 1633 events. 834/1633 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 8144 event pairs, 384 based on Foata normal form. 8/1636 useless extension candidates. Maximal degree in co-relation 2329. Up to 1367 conditions per place. [2023-08-03 19:37:04,105 INFO L140 encePairwiseOnDemand]: 582/585 looper letters, 40 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-08-03 19:37:04,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 262 flow [2023-08-03 19:37:04,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:37:04,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:37:04,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 993 transitions. [2023-08-03 19:37:04,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42435897435897435 [2023-08-03 19:37:04,109 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 993 transitions. [2023-08-03 19:37:04,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 993 transitions. [2023-08-03 19:37:04,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:04,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 993 transitions. [2023-08-03 19:37:04,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 248.25) internal successors, (993), 4 states have internal predecessors, (993), 0 states have call successors, (0), 0 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 19:37:04,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 585.0) internal successors, (2925), 5 states have internal predecessors, (2925), 0 states have call successors, (0), 0 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 19:37:04,117 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 585.0) internal successors, (2925), 5 states have internal predecessors, (2925), 0 states have call successors, (0), 0 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 19:37:04,117 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 166 flow. Second operand 4 states and 993 transitions. [2023-08-03 19:37:04,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 262 flow [2023-08-03 19:37:04,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:37:04,122 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 162 flow [2023-08-03 19:37:04,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=585, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-08-03 19:37:04,123 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2023-08-03 19:37:04,123 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 162 flow [2023-08-03 19:37:04,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:04,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:04,124 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:37:04,136 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 19:37:04,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:04,330 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:37:04,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:04,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1931098679, now seen corresponding path program 1 times [2023-08-03 19:37:04,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:04,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096946692] [2023-08-03 19:37:04,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:04,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:04,400 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:37:04,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:04,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096946692] [2023-08-03 19:37:04,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096946692] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:37:04,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987800047] [2023-08-03 19:37:04,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:04,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:04,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:37:04,403 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:37:04,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 19:37:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:04,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:37:04,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:37:04,515 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:37:04,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:37:04,528 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:37:04,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987800047] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:37:04,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:37:04,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:37:04,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546782306] [2023-08-03 19:37:04,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:37:04,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:37:04,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:04,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:37:04,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:37:04,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 585 [2023-08-03 19:37:04,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 243.4) internal successors, (1217), 5 states have internal predecessors, (1217), 0 states have call successors, (0), 0 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 19:37:04,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:04,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 585 [2023-08-03 19:37:04,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:04,765 INFO L124 PetriNetUnfolderBase]: 542/1069 cut-off events. [2023-08-03 19:37:04,765 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2023-08-03 19:37:04,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2466 conditions, 1069 events. 542/1069 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4498 event pairs, 223 based on Foata normal form. 32/1096 useless extension candidates. Maximal degree in co-relation 1885. Up to 470 conditions per place. [2023-08-03 19:37:04,773 INFO L140 encePairwiseOnDemand]: 581/585 looper letters, 45 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-08-03 19:37:04,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 296 flow [2023-08-03 19:37:04,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:37:04,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:37:04,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 999 transitions. [2023-08-03 19:37:04,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269230769230769 [2023-08-03 19:37:04,782 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 999 transitions. [2023-08-03 19:37:04,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 999 transitions. [2023-08-03 19:37:04,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:04,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 999 transitions. [2023-08-03 19:37:04,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 0 states have call successors, (0), 0 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 19:37:04,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 585.0) internal successors, (2925), 5 states have internal predecessors, (2925), 0 states have call successors, (0), 0 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 19:37:04,790 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 585.0) internal successors, (2925), 5 states have internal predecessors, (2925), 0 states have call successors, (0), 0 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 19:37:04,790 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 162 flow. Second operand 4 states and 999 transitions. [2023-08-03 19:37:04,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 296 flow [2023-08-03 19:37:04,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 290 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:37:04,793 INFO L231 Difference]: Finished difference. Result has 54 places, 41 transitions, 176 flow [2023-08-03 19:37:04,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=585, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=54, PETRI_TRANSITIONS=41} [2023-08-03 19:37:04,794 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2023-08-03 19:37:04,794 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 41 transitions, 176 flow [2023-08-03 19:37:04,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.4) internal successors, (1217), 5 states have internal predecessors, (1217), 0 states have call successors, (0), 0 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 19:37:04,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:04,795 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] [2023-08-03 19:37:04,802 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 19:37:05,001 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,SelfDestructingSolverStorable10 [2023-08-03 19:37:05,001 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:37:05,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:05,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1382702176, now seen corresponding path program 1 times [2023-08-03 19:37:05,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:05,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026845429] [2023-08-03 19:37:05,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:05,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:05,072 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:37:05,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:05,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026845429] [2023-08-03 19:37:05,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026845429] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:37:05,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515295928] [2023-08-03 19:37:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:05,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:05,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:37:05,074 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:37:05,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 19:37:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:05,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:37:05,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:37:05,178 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:37:05,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:37:05,190 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 19:37:05,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515295928] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:37:05,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:37:05,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:37:05,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559991873] [2023-08-03 19:37:05,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:37:05,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:37:05,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:05,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:37:05,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:37:05,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 585 [2023-08-03 19:37:05,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 243.8) internal successors, (1219), 5 states have internal predecessors, (1219), 0 states have call successors, (0), 0 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 19:37:05,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:05,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 585 [2023-08-03 19:37:05,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:05,445 INFO L124 PetriNetUnfolderBase]: 530/1026 cut-off events. [2023-08-03 19:37:05,446 INFO L125 PetriNetUnfolderBase]: For 688/688 co-relation queries the response was YES. [2023-08-03 19:37:05,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2630 conditions, 1026 events. 530/1026 cut-off events. For 688/688 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4237 event pairs, 439 based on Foata normal form. 9/1030 useless extension candidates. Maximal degree in co-relation 2101. Up to 751 conditions per place. [2023-08-03 19:37:05,451 INFO L140 encePairwiseOnDemand]: 581/585 looper letters, 45 selfloop transitions, 3 changer transitions 2/55 dead transitions. [2023-08-03 19:37:05,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 312 flow [2023-08-03 19:37:05,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:37:05,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:37:05,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 999 transitions. [2023-08-03 19:37:05,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269230769230769 [2023-08-03 19:37:05,454 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 999 transitions. [2023-08-03 19:37:05,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 999 transitions. [2023-08-03 19:37:05,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:05,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 999 transitions. [2023-08-03 19:37:05,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 0 states have call successors, (0), 0 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 19:37:05,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 585.0) internal successors, (2925), 5 states have internal predecessors, (2925), 0 states have call successors, (0), 0 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 19:37:05,461 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 585.0) internal successors, (2925), 5 states have internal predecessors, (2925), 0 states have call successors, (0), 0 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 19:37:05,461 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 176 flow. Second operand 4 states and 999 transitions. [2023-08-03 19:37:05,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 312 flow [2023-08-03 19:37:05,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 308 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:37:05,464 INFO L231 Difference]: Finished difference. Result has 58 places, 40 transitions, 180 flow [2023-08-03 19:37:05,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=585, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=58, PETRI_TRANSITIONS=40} [2023-08-03 19:37:05,465 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2023-08-03 19:37:05,465 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 40 transitions, 180 flow [2023-08-03 19:37:05,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.8) internal successors, (1219), 5 states have internal predecessors, (1219), 0 states have call successors, (0), 0 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 19:37:05,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:05,466 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] [2023-08-03 19:37:05,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 19:37:05,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:05,671 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:37:05,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:05,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1806002215, now seen corresponding path program 1 times [2023-08-03 19:37:05,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:05,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976784846] [2023-08-03 19:37:05,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:05,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:07,716 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:37:07,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:07,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976784846] [2023-08-03 19:37:07,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976784846] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:37:07,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652073939] [2023-08-03 19:37:07,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:07,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:07,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:37:07,722 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:37:07,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 19:37:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:07,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-03 19:37:07,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:37:08,981 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:37:08,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:37:10,729 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:37:10,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652073939] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:37:10,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:37:10,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2023-08-03 19:37:10,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739199583] [2023-08-03 19:37:10,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:37:10,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-03 19:37:10,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:10,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-03 19:37:10,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-08-03 19:37:11,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 585 [2023-08-03 19:37:11,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 40 transitions, 180 flow. Second operand has 15 states, 15 states have (on average 206.66666666666666) internal successors, (3100), 15 states have internal predecessors, (3100), 0 states have call successors, (0), 0 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 19:37:11,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:11,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 585 [2023-08-03 19:37:11,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:12,138 INFO L124 PetriNetUnfolderBase]: 725/1407 cut-off events. [2023-08-03 19:37:12,138 INFO L125 PetriNetUnfolderBase]: For 1087/1087 co-relation queries the response was YES. [2023-08-03 19:37:12,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3686 conditions, 1407 events. 725/1407 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6927 event pairs, 126 based on Foata normal form. 1/1403 useless extension candidates. Maximal degree in co-relation 3479. Up to 670 conditions per place. [2023-08-03 19:37:12,145 INFO L140 encePairwiseOnDemand]: 577/585 looper letters, 49 selfloop transitions, 5 changer transitions 39/98 dead transitions. [2023-08-03 19:37:12,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 98 transitions, 646 flow [2023-08-03 19:37:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 19:37:12,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 19:37:12,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1497 transitions. [2023-08-03 19:37:12,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36556776556776555 [2023-08-03 19:37:12,150 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1497 transitions. [2023-08-03 19:37:12,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1497 transitions. [2023-08-03 19:37:12,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:12,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1497 transitions. [2023-08-03 19:37:12,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 213.85714285714286) internal successors, (1497), 7 states have internal predecessors, (1497), 0 states have call successors, (0), 0 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 19:37:12,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 585.0) internal successors, (4680), 8 states have internal predecessors, (4680), 0 states have call successors, (0), 0 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 19:37:12,159 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 585.0) internal successors, (4680), 8 states have internal predecessors, (4680), 0 states have call successors, (0), 0 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 19:37:12,159 INFO L175 Difference]: Start difference. First operand has 58 places, 40 transitions, 180 flow. Second operand 7 states and 1497 transitions. [2023-08-03 19:37:12,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 98 transitions, 646 flow [2023-08-03 19:37:12,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 98 transitions, 625 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-03 19:37:12,166 INFO L231 Difference]: Finished difference. Result has 67 places, 44 transitions, 222 flow [2023-08-03 19:37:12,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=585, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=222, PETRI_PLACES=67, PETRI_TRANSITIONS=44} [2023-08-03 19:37:12,166 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 27 predicate places. [2023-08-03 19:37:12,166 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 44 transitions, 222 flow [2023-08-03 19:37:12,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 206.66666666666666) internal successors, (3100), 15 states have internal predecessors, (3100), 0 states have call successors, (0), 0 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 19:37:12,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:12,168 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] [2023-08-03 19:37:12,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 19:37:12,373 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,SelfDestructingSolverStorable12 [2023-08-03 19:37:12,374 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:37:12,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:12,374 INFO L85 PathProgramCache]: Analyzing trace with hash -2062268489, now seen corresponding path program 2 times [2023-08-03 19:37:12,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:12,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611990576] [2023-08-03 19:37:12,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:12,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-08-03 19:37:13,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:13,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611990576] [2023-08-03 19:37:13,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611990576] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:37:13,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:37:13,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-03 19:37:13,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000555521] [2023-08-03 19:37:13,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:37:13,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 19:37:13,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:13,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 19:37:13,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:37:13,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 585 [2023-08-03 19:37:13,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 44 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 221.66666666666666) internal successors, (1330), 6 states have internal predecessors, (1330), 0 states have call successors, (0), 0 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 19:37:13,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:13,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 585 [2023-08-03 19:37:13,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:14,382 INFO L124 PetriNetUnfolderBase]: 235/564 cut-off events. [2023-08-03 19:37:14,382 INFO L125 PetriNetUnfolderBase]: For 884/884 co-relation queries the response was YES. [2023-08-03 19:37:14,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1946 conditions, 564 events. 235/564 cut-off events. For 884/884 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2656 event pairs, 43 based on Foata normal form. 1/560 useless extension candidates. Maximal degree in co-relation 1926. Up to 443 conditions per place. [2023-08-03 19:37:14,385 INFO L140 encePairwiseOnDemand]: 577/585 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2023-08-03 19:37:14,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 60 transitions, 428 flow [2023-08-03 19:37:14,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 19:37:14,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 19:37:14,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1569 transitions. [2023-08-03 19:37:14,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3831501831501832 [2023-08-03 19:37:14,390 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1569 transitions. [2023-08-03 19:37:14,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1569 transitions. [2023-08-03 19:37:14,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:14,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1569 transitions. [2023-08-03 19:37:14,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 224.14285714285714) internal successors, (1569), 7 states have internal predecessors, (1569), 0 states have call successors, (0), 0 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 19:37:14,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 585.0) internal successors, (4680), 8 states have internal predecessors, (4680), 0 states have call successors, (0), 0 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 19:37:14,399 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 585.0) internal successors, (4680), 8 states have internal predecessors, (4680), 0 states have call successors, (0), 0 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 19:37:14,399 INFO L175 Difference]: Start difference. First operand has 67 places, 44 transitions, 222 flow. Second operand 7 states and 1569 transitions. [2023-08-03 19:37:14,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 60 transitions, 428 flow [2023-08-03 19:37:14,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 424 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:37:14,403 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2023-08-03 19:37:14,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=585, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2023-08-03 19:37:14,403 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 26 predicate places. [2023-08-03 19:37:14,403 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2023-08-03 19:37:14,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 221.66666666666666) internal successors, (1330), 6 states have internal predecessors, (1330), 0 states have call successors, (0), 0 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 19:37:14,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 19:37:14,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 19:37:14,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 19:37:14,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-03 19:37:14,404 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:37:14,406 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 19:37:14,406 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 19:37:14,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 07:37:14 BasicIcfg [2023-08-03 19:37:14,409 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 19:37:14,410 INFO L158 Benchmark]: Toolchain (without parser) took 30044.97ms. Allocated memory was 362.8MB in the beginning and 811.6MB in the end (delta: 448.8MB). Free memory was 316.1MB in the beginning and 543.0MB in the end (delta: -226.9MB). Peak memory consumption was 222.9MB. Max. memory is 16.0GB. [2023-08-03 19:37:14,410 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 362.8MB. Free memory was 315.2MB in the beginning and 315.1MB in the end (delta: 174.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:37:14,410 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.67ms. Allocated memory is still 362.8MB. Free memory was 316.1MB in the beginning and 304.6MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-03 19:37:14,411 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.06ms. Allocated memory is still 362.8MB. Free memory was 304.6MB in the beginning and 302.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:37:14,411 INFO L158 Benchmark]: Boogie Preprocessor took 29.97ms. Allocated memory is still 362.8MB. Free memory was 302.5MB in the beginning and 301.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:37:14,411 INFO L158 Benchmark]: RCFGBuilder took 464.10ms. Allocated memory is still 362.8MB. Free memory was 301.0MB in the beginning and 283.2MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 19:37:14,411 INFO L158 Benchmark]: TraceAbstraction took 29269.45ms. Allocated memory was 362.8MB in the beginning and 811.6MB in the end (delta: 448.8MB). Free memory was 282.5MB in the beginning and 543.0MB in the end (delta: -260.5MB). Peak memory consumption was 189.4MB. Max. memory is 16.0GB. [2023-08-03 19:37:14,412 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 362.8MB. Free memory was 315.2MB in the beginning and 315.1MB in the end (delta: 174.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 242.67ms. Allocated memory is still 362.8MB. Free memory was 316.1MB in the beginning and 304.6MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.06ms. Allocated memory is still 362.8MB. Free memory was 304.6MB in the beginning and 302.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.97ms. Allocated memory is still 362.8MB. Free memory was 302.5MB in the beginning and 301.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 464.10ms. Allocated memory is still 362.8MB. Free memory was 301.0MB in the beginning and 283.2MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 29269.45ms. Allocated memory was 362.8MB in the beginning and 811.6MB in the end (delta: 448.8MB). Free memory was 282.5MB in the beginning and 543.0MB in the end (delta: -260.5MB). Peak memory consumption was 189.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.8s, 171 PlacesBefore, 30 PlacesAfterwards, 187 TransitionsBefore, 30 TransitionsAfterwards, 13494 CoEnabledTransitionPairs, 7 FixpointIterations, 31 TrivialSequentialCompositions, 112 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 52 ConcurrentYvCompositions, 16 ChoiceCompositions, 211 TotalNumberOfCompositions, 13752 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13080, independent: 13042, independent conditional: 0, independent unconditional: 13042, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7925, independent: 7901, independent conditional: 0, independent unconditional: 7901, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13080, independent: 5141, independent conditional: 0, independent unconditional: 5141, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 7925, unknown conditional: 0, unknown unconditional: 7925] , Statistics on independence cache: Total cache size (in pairs): 17, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.9s, 245 PlacesBefore, 40 PlacesAfterwards, 271 TransitionsBefore, 40 TransitionsAfterwards, 40716 CoEnabledTransitionPairs, 8 FixpointIterations, 31 TrivialSequentialCompositions, 168 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 89 ConcurrentYvCompositions, 26 ChoiceCompositions, 314 TotalNumberOfCompositions, 43034 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 40788, independent: 40726, independent conditional: 0, independent unconditional: 40726, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 24024, independent: 23985, independent conditional: 0, independent unconditional: 23985, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 40788, independent: 16741, independent conditional: 0, independent unconditional: 16741, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 24024, unknown conditional: 0, unknown unconditional: 24024] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 72]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 237 locations, 3 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: 5.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54 IncrementalHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 54 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred in iteration=1, InterpolantAutomatonStates: 3, 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, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 7 procedures, 307 locations, 3 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: 23.6s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1124 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 875 mSDsluCounter, 1164 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1152 mSDsCounter, 81 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2471 IncrementalHoareTripleChecker+Invalid, 2552 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 81 mSolverCounterUnsat, 12 mSDtfsCounter, 2471 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 462 GetRequests, 398 SyntacticMatches, 9 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=222occurred in iteration=11, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 552 NumberOfCodeBlocks, 552 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 688 ConstructedInterpolants, 0 QuantifiedInterpolants, 6103 SizeOfPredicates, 57 NumberOfNonLiveVariables, 1276 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 27 InterpolantComputations, 7 PerfectInterpolantSequences, 283/314 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 19:37:14,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...