/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_parallel-bluetooth.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 20:00:34,019 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 20:00:34,073 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 20:00:34,076 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 20:00:34,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 20:00:34,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 20:00:34,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 20:00:34,103 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 20:00:34,104 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 20:00:34,107 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 20:00:34,107 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 20:00:34,107 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 20:00:34,107 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 20:00:34,108 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 20:00:34,109 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 20:00:34,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 20:00:34,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 20:00:34,109 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 20:00:34,109 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 20:00:34,109 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 20:00:34,109 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 20:00:34,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 20:00:34,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 20:00:34,110 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 20:00:34,110 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 20:00:34,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 20:00:34,111 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 20:00:34,111 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 20:00:34,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 20:00:34,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 20:00:34,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:00:34,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 20:00:34,113 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 20:00:34,113 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 20:00:34,113 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 20:00:34,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 20:00:34,113 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 20:00:34,113 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 20:00:34,113 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 20:00:34,113 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 20:00:34,114 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 20:00:34,114 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 20:00:34,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 20:00:34,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 20:00:34,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 20:00:34,289 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 20:00:34,291 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 20:00:34,291 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-bluetooth.wvr_bound2.c [2023-08-03 20:00:35,255 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 20:00:35,418 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 20:00:35,418 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-bluetooth.wvr_bound2.c [2023-08-03 20:00:35,423 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e11e2b388/7991be5977c44aaba44b48bb15510953/FLAG9ac310013 [2023-08-03 20:00:35,434 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e11e2b388/7991be5977c44aaba44b48bb15510953 [2023-08-03 20:00:35,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 20:00:35,437 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 20:00:35,437 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 20:00:35,437 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 20:00:35,440 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 20:00:35,440 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:00:35" (1/1) ... [2023-08-03 20:00:35,441 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4838b1a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:00:35, skipping insertion in model container [2023-08-03 20:00:35,441 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:00:35" (1/1) ... [2023-08-03 20:00:35,456 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 20:00:35,582 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_parallel-bluetooth.wvr_bound2.c[3296,3309] [2023-08-03 20:00:35,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:00:35,593 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 20:00:35,611 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_parallel-bluetooth.wvr_bound2.c[3296,3309] [2023-08-03 20:00:35,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:00:35,617 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:00:35,617 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:00:35,622 INFO L206 MainTranslator]: Completed translation [2023-08-03 20:00:35,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:00:35 WrapperNode [2023-08-03 20:00:35,623 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 20:00:35,623 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 20:00:35,623 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 20:00:35,623 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 20:00:35,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:00:35" (1/1) ... [2023-08-03 20:00:35,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:00:35" (1/1) ... [2023-08-03 20:00:35,651 INFO L138 Inliner]: procedures = 21, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 157 [2023-08-03 20:00:35,651 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 20:00:35,652 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 20:00:35,652 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 20:00:35,652 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 20:00:35,658 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:00:35" (1/1) ... [2023-08-03 20:00:35,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:00:35" (1/1) ... [2023-08-03 20:00:35,660 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:00:35" (1/1) ... [2023-08-03 20:00:35,660 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:00:35" (1/1) ... [2023-08-03 20:00:35,665 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:00:35" (1/1) ... [2023-08-03 20:00:35,667 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:00:35" (1/1) ... [2023-08-03 20:00:35,668 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:00:35" (1/1) ... [2023-08-03 20:00:35,682 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:00:35" (1/1) ... [2023-08-03 20:00:35,684 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 20:00:35,685 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 20:00:35,685 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 20:00:35,685 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 20:00:35,686 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:00:35" (1/1) ... [2023-08-03 20:00:35,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:00:35,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:00:35,725 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 20:00:35,757 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 20:00:35,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 20:00:35,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 20:00:35,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 20:00:35,769 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 20:00:35,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 20:00:35,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 20:00:35,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 20:00:35,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 20:00:35,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 20:00:35,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 20:00:35,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 20:00:35,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 20:00:35,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 20:00:35,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 20:00:35,773 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 20:00:35,864 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 20:00:35,871 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 20:00:36,077 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 20:00:36,102 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 20:00:36,102 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 20:00:36,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:00:36 BoogieIcfgContainer [2023-08-03 20:00:36,113 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 20:00:36,114 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 20:00:36,114 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 20:00:36,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 20:00:36,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 08:00:35" (1/3) ... [2023-08-03 20:00:36,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb09773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:00:36, skipping insertion in model container [2023-08-03 20:00:36,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:00:35" (2/3) ... [2023-08-03 20:00:36,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb09773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:00:36, skipping insertion in model container [2023-08-03 20:00:36,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:00:36" (3/3) ... [2023-08-03 20:00:36,119 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_parallel-bluetooth.wvr_bound2.c [2023-08-03 20:00:36,124 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 20:00:36,131 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 20:00:36,131 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 20:00:36,131 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 20:00:36,202 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 20:00:36,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 158 transitions, 338 flow [2023-08-03 20:00:36,335 INFO L124 PetriNetUnfolderBase]: 35/299 cut-off events. [2023-08-03 20:00:36,335 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 20:00:36,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 299 events. 35/299 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 893 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 182. Up to 8 conditions per place. [2023-08-03 20:00:36,342 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 158 transitions, 338 flow [2023-08-03 20:00:36,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 158 transitions, 338 flow [2023-08-03 20:00:36,360 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:00:36,369 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 158 transitions, 338 flow [2023-08-03 20:00:36,372 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 158 transitions, 338 flow [2023-08-03 20:00:36,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 158 transitions, 338 flow [2023-08-03 20:00:36,466 INFO L124 PetriNetUnfolderBase]: 35/299 cut-off events. [2023-08-03 20:00:36,466 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 20:00:36,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 299 events. 35/299 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 893 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 182. Up to 8 conditions per place. [2023-08-03 20:00:36,469 INFO L119 LiptonReduction]: Number of co-enabled transitions 2224 [2023-08-03 20:00:39,103 INFO L134 LiptonReduction]: Checked pairs total: 8482 [2023-08-03 20:00:39,104 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-08-03 20:00:39,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:00:39,126 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;@ff07523, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:00:39,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 20:00:39,131 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:00:39,131 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-03 20:00:39,131 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 20:00:39,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:00:39,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 20:00:39,133 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 20:00:39,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:00:39,136 INFO L85 PathProgramCache]: Analyzing trace with hash 589944255, now seen corresponding path program 1 times [2023-08-03 20:00:39,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:00:39,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667795850] [2023-08-03 20:00:39,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:39,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:00:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:00:39,278 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 20:00:39,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:00:39,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667795850] [2023-08-03 20:00:39,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667795850] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:00:39,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:00:39,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 20:00:39,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803267731] [2023-08-03 20:00:39,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:00:39,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:00:39,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:00:39,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:00:39,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:00:39,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 311 [2023-08-03 20:00:39,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:39,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:00:39,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 311 [2023-08-03 20:00:39,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:00:39,472 INFO L124 PetriNetUnfolderBase]: 654/1092 cut-off events. [2023-08-03 20:00:39,473 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-03 20:00:39,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2157 conditions, 1092 events. 654/1092 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4722 event pairs, 252 based on Foata normal form. 0/828 useless extension candidates. Maximal degree in co-relation 1885. Up to 999 conditions per place. [2023-08-03 20:00:39,483 INFO L140 encePairwiseOnDemand]: 307/311 looper letters, 34 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-03 20:00:39,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 178 flow [2023-08-03 20:00:39,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:00:39,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:00:39,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-08-03 20:00:39,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46195069667738475 [2023-08-03 20:00:39,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-08-03 20:00:39,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-08-03 20:00:39,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:00:39,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-08-03 20:00:39,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:39,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:39,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:39,510 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 96 flow. Second operand 3 states and 431 transitions. [2023-08-03 20:00:39,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 178 flow [2023-08-03 20:00:39,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 20:00:39,514 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 102 flow [2023-08-03 20:00:39,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=311, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2023-08-03 20:00:39,517 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2023-08-03 20:00:39,518 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 102 flow [2023-08-03 20:00:39,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:39,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:00:39,518 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 20:00:39,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 20:00:39,519 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 20:00:39,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:00:39,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1141493887, now seen corresponding path program 1 times [2023-08-03 20:00:39,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:00:39,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6713582] [2023-08-03 20:00:39,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:39,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:00:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:00:39,539 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 20:00:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:00:39,565 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 20:00:39,566 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 20:00:39,567 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 20:00:39,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 20:00:39,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 20:00:39,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 20:00:39,571 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 20:00:39,574 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 20:00:39,574 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 20:00:39,600 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 20:00:39,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 183 transitions, 414 flow [2023-08-03 20:00:39,681 INFO L124 PetriNetUnfolderBase]: 131/876 cut-off events. [2023-08-03 20:00:39,682 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 20:00:39,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 973 conditions, 876 events. 131/876 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4410 event pairs, 1 based on Foata normal form. 0/742 useless extension candidates. Maximal degree in co-relation 534. Up to 32 conditions per place. [2023-08-03 20:00:39,686 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 183 transitions, 414 flow [2023-08-03 20:00:39,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 183 transitions, 414 flow [2023-08-03 20:00:39,690 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:00:39,690 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 183 transitions, 414 flow [2023-08-03 20:00:39,690 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 183 transitions, 414 flow [2023-08-03 20:00:39,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 183 transitions, 414 flow [2023-08-03 20:00:39,769 INFO L124 PetriNetUnfolderBase]: 131/876 cut-off events. [2023-08-03 20:00:39,769 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 20:00:39,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 973 conditions, 876 events. 131/876 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4410 event pairs, 1 based on Foata normal form. 0/742 useless extension candidates. Maximal degree in co-relation 534. Up to 32 conditions per place. [2023-08-03 20:00:39,781 INFO L119 LiptonReduction]: Number of co-enabled transitions 5544 [2023-08-03 20:00:42,523 INFO L134 LiptonReduction]: Checked pairs total: 30190 [2023-08-03 20:00:42,524 INFO L136 LiptonReduction]: Total number of compositions: 159 [2023-08-03 20:00:42,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:00:42,530 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;@ff07523, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:00:42,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 20:00:42,545 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:00:42,545 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-03 20:00:42,546 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 20:00:42,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:00:42,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 20:00:42,549 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 20:00:42,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:00:42,552 INFO L85 PathProgramCache]: Analyzing trace with hash 938173323, now seen corresponding path program 1 times [2023-08-03 20:00:42,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:00:42,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474015271] [2023-08-03 20:00:42,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:42,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:00:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:00:42,630 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 20:00:42,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:00:42,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474015271] [2023-08-03 20:00:42,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474015271] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:00:42,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:00:42,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 20:00:42,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335349981] [2023-08-03 20:00:42,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:00:42,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:00:42,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:00:42,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:00:42,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:00:42,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 342 [2023-08-03 20:00:42,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 60 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:42,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:00:42,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 342 [2023-08-03 20:00:42,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:00:45,356 INFO L124 PetriNetUnfolderBase]: 33808/47965 cut-off events. [2023-08-03 20:00:45,357 INFO L125 PetriNetUnfolderBase]: For 4048/4048 co-relation queries the response was YES. [2023-08-03 20:00:45,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94166 conditions, 47965 events. 33808/47965 cut-off events. For 4048/4048 co-relation queries the response was YES. Maximal size of possible extension queue 1437. Compared 311388 event pairs, 19401 based on Foata normal form. 0/41638 useless extension candidates. Maximal degree in co-relation 24428. Up to 43847 conditions per place. [2023-08-03 20:00:45,691 INFO L140 encePairwiseOnDemand]: 338/342 looper letters, 49 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-08-03 20:00:45,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 65 transitions, 280 flow [2023-08-03 20:00:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:00:45,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:00:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-08-03 20:00:45,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756335282651072 [2023-08-03 20:00:45,696 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-08-03 20:00:45,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-08-03 20:00:45,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:00:45,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-08-03 20:00:45,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:45,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:45,701 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:45,701 INFO L175 Difference]: Start difference. First operand has 57 places, 60 transitions, 168 flow. Second operand 3 states and 488 transitions. [2023-08-03 20:00:45,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 65 transitions, 280 flow [2023-08-03 20:00:45,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 280 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 20:00:45,705 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 178 flow [2023-08-03 20:00:45,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2023-08-03 20:00:45,706 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2023-08-03 20:00:45,706 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 178 flow [2023-08-03 20:00:45,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:45,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:00:45,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:00:45,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 20:00:45,707 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:00:45,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:00:45,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1594824013, now seen corresponding path program 1 times [2023-08-03 20:00:45,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:00:45,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438939449] [2023-08-03 20:00:45,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:45,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:00:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:00:45,780 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 20:00:45,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:00:45,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438939449] [2023-08-03 20:00:45,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438939449] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:00:45,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188055877] [2023-08-03 20:00:45,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:45,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:00:45,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:00:45,784 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 20:00:45,790 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 20:00:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:00:45,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:00:45,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:00:45,853 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 20:00:45,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:00:45,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188055877] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:00:45,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:00:45,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 20:00:45,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263748484] [2023-08-03 20:00:45,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:00:45,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:00:45,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:00:45,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:00:45,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:00:45,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 342 [2023-08-03 20:00:45,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:45,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:00:45,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 342 [2023-08-03 20:00:45,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:00:48,403 INFO L124 PetriNetUnfolderBase]: 33788/47539 cut-off events. [2023-08-03 20:00:48,404 INFO L125 PetriNetUnfolderBase]: For 3449/3449 co-relation queries the response was YES. [2023-08-03 20:00:48,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93767 conditions, 47539 events. 33788/47539 cut-off events. For 3449/3449 co-relation queries the response was YES. Maximal size of possible extension queue 1460. Compared 307408 event pairs, 18268 based on Foata normal form. 0/41313 useless extension candidates. Maximal degree in co-relation 93724. Up to 43366 conditions per place. [2023-08-03 20:00:48,767 INFO L140 encePairwiseOnDemand]: 339/342 looper letters, 60 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-03 20:00:48,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 76 transitions, 334 flow [2023-08-03 20:00:48,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:00:48,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:00:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2023-08-03 20:00:48,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4844054580896686 [2023-08-03 20:00:48,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2023-08-03 20:00:48,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2023-08-03 20:00:48,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:00:48,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2023-08-03 20:00:48,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:48,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:48,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:48,786 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 178 flow. Second operand 3 states and 497 transitions. [2023-08-03 20:00:48,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 76 transitions, 334 flow [2023-08-03 20:00:48,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:00:48,803 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 188 flow [2023-08-03 20:00:48,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-08-03 20:00:48,805 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 4 predicate places. [2023-08-03 20:00:48,805 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 188 flow [2023-08-03 20:00:48,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:48,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:00:48,805 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 20:00:48,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 20:00:49,009 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 20:00:49,010 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:00:49,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:00:49,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1433046624, now seen corresponding path program 1 times [2023-08-03 20:00:49,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:00:49,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620903526] [2023-08-03 20:00:49,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:49,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:00:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:00:49,058 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 20:00:49,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:00:49,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620903526] [2023-08-03 20:00:49,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620903526] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:00:49,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148522576] [2023-08-03 20:00:49,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:49,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:00:49,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:00:49,060 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 20:00:49,098 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 20:00:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:00:49,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:00:49,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:00:49,172 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 20:00:49,172 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:00:49,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148522576] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:00:49,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:00:49,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 20:00:49,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727802747] [2023-08-03 20:00:49,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:00:49,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:00:49,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:00:49,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:00:49,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:00:49,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 342 [2023-08-03 20:00:49,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:49,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:00:49,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 342 [2023-08-03 20:00:49,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:00:51,540 INFO L124 PetriNetUnfolderBase]: 33756/47573 cut-off events. [2023-08-03 20:00:51,540 INFO L125 PetriNetUnfolderBase]: For 5184/5184 co-relation queries the response was YES. [2023-08-03 20:00:51,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95562 conditions, 47573 events. 33756/47573 cut-off events. For 5184/5184 co-relation queries the response was YES. Maximal size of possible extension queue 1468. Compared 308000 event pairs, 13565 based on Foata normal form. 16/42083 useless extension candidates. Maximal degree in co-relation 24638. Up to 43726 conditions per place. [2023-08-03 20:00:51,875 INFO L140 encePairwiseOnDemand]: 338/342 looper letters, 57 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2023-08-03 20:00:51,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 74 transitions, 337 flow [2023-08-03 20:00:51,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:00:51,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:00:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 781 transitions. [2023-08-03 20:00:51,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567251461988304 [2023-08-03 20:00:51,878 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 781 transitions. [2023-08-03 20:00:51,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 781 transitions. [2023-08-03 20:00:51,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:00:51,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 781 transitions. [2023-08-03 20:00:51,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.2) internal successors, (781), 5 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:51,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 342.0) internal successors, (2052), 6 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:51,882 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 342.0) internal successors, (2052), 6 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:51,883 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 188 flow. Second operand 5 states and 781 transitions. [2023-08-03 20:00:51,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 74 transitions, 337 flow [2023-08-03 20:00:51,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 74 transitions, 328 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 20:00:51,887 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 197 flow [2023-08-03 20:00:51,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=197, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2023-08-03 20:00:51,888 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2023-08-03 20:00:51,889 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 197 flow [2023-08-03 20:00:51,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:51,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:00:51,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:00:51,893 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 20:00:52,093 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 20:00:52,095 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:00:52,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:00:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash 683206692, now seen corresponding path program 1 times [2023-08-03 20:00:52,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:00:52,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291871442] [2023-08-03 20:00:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:52,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:00:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:00:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 20:00:52,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:00:52,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291871442] [2023-08-03 20:00:52,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291871442] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:00:52,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692522405] [2023-08-03 20:00:52,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:52,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:00:52,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:00:52,150 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 20:00:52,153 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 20:00:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:00:52,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:00:52,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:00:52,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 20:00:52,204 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:00:52,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692522405] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:00:52,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:00:52,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 20:00:52,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396361590] [2023-08-03 20:00:52,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:00:52,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:00:52,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:00:52,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:00:52,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:00:52,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 342 [2023-08-03 20:00:52,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:52,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:00:52,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 342 [2023-08-03 20:00:52,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:00:53,950 INFO L124 PetriNetUnfolderBase]: 26612/37461 cut-off events. [2023-08-03 20:00:53,950 INFO L125 PetriNetUnfolderBase]: For 3213/3213 co-relation queries the response was YES. [2023-08-03 20:00:54,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76011 conditions, 37461 events. 26612/37461 cut-off events. For 3213/3213 co-relation queries the response was YES. Maximal size of possible extension queue 987. Compared 235115 event pairs, 14182 based on Foata normal form. 0/33815 useless extension candidates. Maximal degree in co-relation 22023. Up to 24936 conditions per place. [2023-08-03 20:00:54,181 INFO L140 encePairwiseOnDemand]: 339/342 looper letters, 72 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-08-03 20:00:54,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 87 transitions, 407 flow [2023-08-03 20:00:54,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:00:54,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:00:54,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2023-08-03 20:00:54,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2023-08-03 20:00:54,183 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2023-08-03 20:00:54,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2023-08-03 20:00:54,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:00:54,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2023-08-03 20:00:54,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:54,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:54,187 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:54,187 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 197 flow. Second operand 3 states and 507 transitions. [2023-08-03 20:00:54,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 87 transitions, 407 flow [2023-08-03 20:00:54,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 87 transitions, 400 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 20:00:54,193 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 202 flow [2023-08-03 20:00:54,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2023-08-03 20:00:54,195 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2023-08-03 20:00:54,196 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 202 flow [2023-08-03 20:00:54,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:54,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:00:54,196 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:00:54,211 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 20:00:54,400 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 20:00:54,400 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 20:00:54,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:00:54,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1165831378, now seen corresponding path program 1 times [2023-08-03 20:00:54,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:00:54,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693827111] [2023-08-03 20:00:54,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:54,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:00:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:00:54,463 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 20:00:54,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:00:54,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693827111] [2023-08-03 20:00:54,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693827111] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:00:54,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907404299] [2023-08-03 20:00:54,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:54,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:00:54,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:00:54,473 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 20:00:54,505 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 20:00:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:00:54,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:00:54,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:00:54,572 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 20:00:54,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:00:54,589 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 20:00:54,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907404299] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:00:54,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:00:54,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 20:00:54,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748001357] [2023-08-03 20:00:54,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:00:54,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:00:54,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:00:54,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:00:54,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:00:54,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 342 [2023-08-03 20:00:54,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:54,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:00:54,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 342 [2023-08-03 20:00:54,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:00:56,446 INFO L124 PetriNetUnfolderBase]: 24120/33985 cut-off events. [2023-08-03 20:00:56,446 INFO L125 PetriNetUnfolderBase]: For 6703/6703 co-relation queries the response was YES. [2023-08-03 20:00:56,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71113 conditions, 33985 events. 24120/33985 cut-off events. For 6703/6703 co-relation queries the response was YES. Maximal size of possible extension queue 911. Compared 209210 event pairs, 9746 based on Foata normal form. 4/31154 useless extension candidates. Maximal degree in co-relation 21160. Up to 31627 conditions per place. [2023-08-03 20:00:56,690 INFO L140 encePairwiseOnDemand]: 339/342 looper letters, 58 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2023-08-03 20:00:56,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 344 flow [2023-08-03 20:00:56,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:00:56,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:00:56,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 636 transitions. [2023-08-03 20:00:56,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2023-08-03 20:00:56,692 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 636 transitions. [2023-08-03 20:00:56,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 636 transitions. [2023-08-03 20:00:56,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:00:56,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 636 transitions. [2023-08-03 20:00:56,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:56,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:56,697 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:56,697 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 202 flow. Second operand 4 states and 636 transitions. [2023-08-03 20:00:56,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 344 flow [2023-08-03 20:00:56,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:00:56,738 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 198 flow [2023-08-03 20:00:56,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-08-03 20:00:56,739 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2023-08-03 20:00:56,739 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 198 flow [2023-08-03 20:00:56,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:56,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:00:56,740 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:00:56,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-03 20:00:56,945 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 20:00:56,945 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:00:56,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:00:56,945 INFO L85 PathProgramCache]: Analyzing trace with hash 992798281, now seen corresponding path program 1 times [2023-08-03 20:00:56,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:00:56,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284377342] [2023-08-03 20:00:56,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:56,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:00:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:00:57,008 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 20:00:57,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:00:57,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284377342] [2023-08-03 20:00:57,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284377342] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:00:57,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128664717] [2023-08-03 20:00:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:57,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:00:57,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:00:57,025 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 20:00:57,031 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 20:00:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:00:57,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:00:57,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:00:57,108 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 20:00:57,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:00:57,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128664717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:00:57,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:00:57,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 20:00:57,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755191999] [2023-08-03 20:00:57,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:00:57,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:00:57,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:00:57,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:00:57,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:00:57,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 342 [2023-08-03 20:00:57,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:57,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:00:57,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 342 [2023-08-03 20:00:57,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:00:58,508 INFO L124 PetriNetUnfolderBase]: 21816/30151 cut-off events. [2023-08-03 20:00:58,509 INFO L125 PetriNetUnfolderBase]: For 2577/2577 co-relation queries the response was YES. [2023-08-03 20:00:58,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63684 conditions, 30151 events. 21816/30151 cut-off events. For 2577/2577 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 177028 event pairs, 218 based on Foata normal form. 576/28244 useless extension candidates. Maximal degree in co-relation 23051. Up to 25130 conditions per place. [2023-08-03 20:00:58,693 INFO L140 encePairwiseOnDemand]: 338/342 looper letters, 88 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2023-08-03 20:00:58,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 104 transitions, 468 flow [2023-08-03 20:00:58,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:00:58,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:00:58,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 811 transitions. [2023-08-03 20:00:58,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47426900584795323 [2023-08-03 20:00:58,695 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 811 transitions. [2023-08-03 20:00:58,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 811 transitions. [2023-08-03 20:00:58,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:00:58,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 811 transitions. [2023-08-03 20:00:58,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.2) internal successors, (811), 5 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:58,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 342.0) internal successors, (2052), 6 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:58,699 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 342.0) internal successors, (2052), 6 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:58,699 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 198 flow. Second operand 5 states and 811 transitions. [2023-08-03 20:00:58,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 104 transitions, 468 flow [2023-08-03 20:00:58,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 104 transitions, 456 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 20:00:58,792 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 203 flow [2023-08-03 20:00:58,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-08-03 20:00:58,793 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2023-08-03 20:00:58,793 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 203 flow [2023-08-03 20:00:58,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:58,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:00:58,794 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] [2023-08-03 20:00:58,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-03 20:00:58,997 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 20:00:58,998 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 20:00:58,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:00:58,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1310557511, now seen corresponding path program 1 times [2023-08-03 20:00:58,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:00:58,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270563091] [2023-08-03 20:00:58,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:58,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:00:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:00:59,037 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 20:00:59,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:00:59,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270563091] [2023-08-03 20:00:59,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270563091] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:00:59,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208434005] [2023-08-03 20:00:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:00:59,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:00:59,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:00:59,039 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 20:00:59,041 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 20:00:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:00:59,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:00:59,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:00:59,098 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 20:00:59,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:00:59,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208434005] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:00:59,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:00:59,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 20:00:59,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396637586] [2023-08-03 20:00:59,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:00:59,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:00:59,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:00:59,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:00:59,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:00:59,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 342 [2023-08-03 20:00:59,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:00:59,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:00:59,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 342 [2023-08-03 20:00:59,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:01:00,648 INFO L124 PetriNetUnfolderBase]: 20923/29830 cut-off events. [2023-08-03 20:01:00,649 INFO L125 PetriNetUnfolderBase]: For 9891/9891 co-relation queries the response was YES. [2023-08-03 20:01:00,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64155 conditions, 29830 events. 20923/29830 cut-off events. For 9891/9891 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 183529 event pairs, 13182 based on Foata normal form. 0/27729 useless extension candidates. Maximal degree in co-relation 23220. Up to 22306 conditions per place. [2023-08-03 20:01:00,980 INFO L140 encePairwiseOnDemand]: 339/342 looper letters, 73 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-08-03 20:01:00,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 87 transitions, 413 flow [2023-08-03 20:01:00,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:01:00,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:01:00,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2023-08-03 20:01:00,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2023-08-03 20:01:00,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2023-08-03 20:01:00,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2023-08-03 20:01:00,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:01:00,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2023-08-03 20:01:00,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:00,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:00,984 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:00,984 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 203 flow. Second operand 3 states and 507 transitions. [2023-08-03 20:01:00,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 87 transitions, 413 flow [2023-08-03 20:01:01,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 87 transitions, 406 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 20:01:01,001 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 208 flow [2023-08-03 20:01:01,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-08-03 20:01:01,002 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2023-08-03 20:01:01,002 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 208 flow [2023-08-03 20:01:01,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:01,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:01:01,003 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, 1] [2023-08-03 20:01:01,009 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 20:01:01,206 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 20:01:01,207 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 20:01:01,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:01:01,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1976208436, now seen corresponding path program 1 times [2023-08-03 20:01:01,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:01:01,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803878365] [2023-08-03 20:01:01,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:01:01,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:01:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:01:01,252 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 20:01:01,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:01:01,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803878365] [2023-08-03 20:01:01,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803878365] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:01:01,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319041781] [2023-08-03 20:01:01,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:01:01,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:01:01,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:01:01,253 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 20:01:01,255 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 20:01:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:01:01,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:01:01,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:01:01,326 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 20:01:01,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:01:01,338 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 20:01:01,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319041781] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:01:01,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:01:01,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:01:01,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497332518] [2023-08-03 20:01:01,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:01:01,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:01:01,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:01:01,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:01:01,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:01:01,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 342 [2023-08-03 20:01:01,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:01,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:01:01,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 342 [2023-08-03 20:01:01,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:01:02,836 INFO L124 PetriNetUnfolderBase]: 20155/28070 cut-off events. [2023-08-03 20:01:02,836 INFO L125 PetriNetUnfolderBase]: For 5670/5670 co-relation queries the response was YES. [2023-08-03 20:01:02,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61469 conditions, 28070 events. 20155/28070 cut-off events. For 5670/5670 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 162934 event pairs, 6290 based on Foata normal form. 96/26438 useless extension candidates. Maximal degree in co-relation 45136. Up to 23200 conditions per place. [2023-08-03 20:01:02,962 INFO L140 encePairwiseOnDemand]: 339/342 looper letters, 81 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2023-08-03 20:01:02,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 440 flow [2023-08-03 20:01:02,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:01:02,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:01:02,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 658 transitions. [2023-08-03 20:01:02,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48099415204678364 [2023-08-03 20:01:02,965 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 658 transitions. [2023-08-03 20:01:02,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 658 transitions. [2023-08-03 20:01:02,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:01:02,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 658 transitions. [2023-08-03 20:01:02,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 164.5) internal successors, (658), 4 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:02,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:02,968 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:02,968 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 208 flow. Second operand 4 states and 658 transitions. [2023-08-03 20:01:02,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 440 flow [2023-08-03 20:01:03,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 438 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:01:03,506 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 204 flow [2023-08-03 20:01:03,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2023-08-03 20:01:03,507 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2023-08-03 20:01:03,507 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 204 flow [2023-08-03 20:01:03,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:03,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:01:03,507 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:01:03,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 20:01:03,712 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 20:01:03,713 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 20:01:03,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:01:03,713 INFO L85 PathProgramCache]: Analyzing trace with hash -171519238, now seen corresponding path program 1 times [2023-08-03 20:01:03,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:01:03,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398070729] [2023-08-03 20:01:03,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:01:03,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:01:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:01:03,764 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 20:01:03,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:01:03,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398070729] [2023-08-03 20:01:03,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398070729] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:01:03,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979993108] [2023-08-03 20:01:03,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:01:03,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:01:03,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:01:03,779 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:01:03,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 20:01:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:01:03,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:01:03,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:01:03,849 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 20:01:03,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:01:03,861 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 20:01:03,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979993108] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:01:03,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:01:03,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:01:03,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259235422] [2023-08-03 20:01:03,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:01:03,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:01:03,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:01:03,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:01:03,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:01:03,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 342 [2023-08-03 20:01:03,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:03,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:01:03,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 342 [2023-08-03 20:01:03,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:01:04,932 INFO L124 PetriNetUnfolderBase]: 15863/22322 cut-off events. [2023-08-03 20:01:04,932 INFO L125 PetriNetUnfolderBase]: For 8663/8663 co-relation queries the response was YES. [2023-08-03 20:01:04,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48922 conditions, 22322 events. 15863/22322 cut-off events. For 8663/8663 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 127557 event pairs, 4693 based on Foata normal form. 480/21408 useless extension candidates. Maximal degree in co-relation 46108. Up to 8223 conditions per place. [2023-08-03 20:01:05,024 INFO L140 encePairwiseOnDemand]: 338/342 looper letters, 91 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2023-08-03 20:01:05,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 107 transitions, 494 flow [2023-08-03 20:01:05,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:01:05,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:01:05,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 669 transitions. [2023-08-03 20:01:05,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48903508771929827 [2023-08-03 20:01:05,026 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 669 transitions. [2023-08-03 20:01:05,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 669 transitions. [2023-08-03 20:01:05,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:01:05,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 669 transitions. [2023-08-03 20:01:05,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 167.25) internal successors, (669), 4 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:05,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:05,029 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:05,029 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 204 flow. Second operand 4 states and 669 transitions. [2023-08-03 20:01:05,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 107 transitions, 494 flow [2023-08-03 20:01:05,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 107 transitions, 488 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 20:01:05,066 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 218 flow [2023-08-03 20:01:05,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=71, PETRI_TRANSITIONS=62} [2023-08-03 20:01:05,066 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 14 predicate places. [2023-08-03 20:01:05,067 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 218 flow [2023-08-03 20:01:05,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:05,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:01:05,067 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:01:05,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-03 20:01:05,271 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 20:01:05,271 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 20:01:05,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:01:05,272 INFO L85 PathProgramCache]: Analyzing trace with hash 128855698, now seen corresponding path program 1 times [2023-08-03 20:01:05,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:01:05,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522368114] [2023-08-03 20:01:05,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:01:05,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:01:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:01:05,327 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 20:01:05,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:01:05,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522368114] [2023-08-03 20:01:05,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522368114] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:01:05,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077492359] [2023-08-03 20:01:05,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:01:05,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:01:05,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:01:05,341 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:01:05,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 20:01:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:01:05,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:01:05,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:01:05,447 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 20:01:05,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:01:05,457 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 20:01:05,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077492359] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:01:05,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:01:05,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 20:01:05,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016053317] [2023-08-03 20:01:05,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:01:05,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:01:05,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:01:05,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:01:05,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:01:05,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 342 [2023-08-03 20:01:05,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 150.8) internal successors, (754), 5 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 20:01:05,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:01:05,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 342 [2023-08-03 20:01:05,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:01:06,668 INFO L124 PetriNetUnfolderBase]: 15843/22447 cut-off events. [2023-08-03 20:01:06,668 INFO L125 PetriNetUnfolderBase]: For 12164/12164 co-relation queries the response was YES. [2023-08-03 20:01:06,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51834 conditions, 22447 events. 15843/22447 cut-off events. For 12164/12164 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 129839 event pairs, 11877 based on Foata normal form. 21/20884 useless extension candidates. Maximal degree in co-relation 48948. Up to 19724 conditions per place. [2023-08-03 20:01:06,793 INFO L140 encePairwiseOnDemand]: 338/342 looper letters, 91 selfloop transitions, 3 changer transitions 2/108 dead transitions. [2023-08-03 20:01:06,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 108 transitions, 510 flow [2023-08-03 20:01:06,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:01:06,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:01:06,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 669 transitions. [2023-08-03 20:01:06,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48903508771929827 [2023-08-03 20:01:06,795 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 669 transitions. [2023-08-03 20:01:06,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 669 transitions. [2023-08-03 20:01:06,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:01:06,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 669 transitions. [2023-08-03 20:01:06,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 167.25) internal successors, (669), 4 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:06,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:06,818 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:06,818 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 218 flow. Second operand 4 states and 669 transitions. [2023-08-03 20:01:06,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 108 transitions, 510 flow [2023-08-03 20:01:06,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 108 transitions, 506 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 20:01:06,907 INFO L231 Difference]: Finished difference. Result has 75 places, 61 transitions, 222 flow [2023-08-03 20:01:06,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=75, PETRI_TRANSITIONS=61} [2023-08-03 20:01:06,908 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2023-08-03 20:01:06,909 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 61 transitions, 222 flow [2023-08-03 20:01:06,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.8) internal successors, (754), 5 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 20:01:06,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:01:06,910 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:01:06,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 20:01:07,113 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 20:01:07,114 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 20:01:07,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:01:07,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1464582300, now seen corresponding path program 1 times [2023-08-03 20:01:07,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:01:07,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460566141] [2023-08-03 20:01:07,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:01:07,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:01:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:01:07,231 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 20:01:07,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:01:07,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460566141] [2023-08-03 20:01:07,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460566141] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:01:07,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:01:07,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 20:01:07,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064875202] [2023-08-03 20:01:07,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:01:07,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:01:07,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:01:07,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:01:07,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:01:07,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 342 [2023-08-03 20:01:07,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 61 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:07,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:01:07,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 342 [2023-08-03 20:01:07,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:01:08,370 INFO L124 PetriNetUnfolderBase]: 16782/23855 cut-off events. [2023-08-03 20:01:08,370 INFO L125 PetriNetUnfolderBase]: For 13151/13151 co-relation queries the response was YES. [2023-08-03 20:01:08,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54729 conditions, 23855 events. 16782/23855 cut-off events. For 13151/13151 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 137196 event pairs, 3600 based on Foata normal form. 0/22712 useless extension candidates. Maximal degree in co-relation 54473. Up to 18683 conditions per place. [2023-08-03 20:01:08,578 INFO L140 encePairwiseOnDemand]: 335/342 looper letters, 76 selfloop transitions, 5 changer transitions 0/93 dead transitions. [2023-08-03 20:01:08,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 93 transitions, 516 flow [2023-08-03 20:01:08,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:01:08,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:01:08,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 505 transitions. [2023-08-03 20:01:08,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4922027290448343 [2023-08-03 20:01:08,580 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 505 transitions. [2023-08-03 20:01:08,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 505 transitions. [2023-08-03 20:01:08,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:01:08,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 505 transitions. [2023-08-03 20:01:08,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:08,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:08,582 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 342.0) internal successors, (1368), 4 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:08,582 INFO L175 Difference]: Start difference. First operand has 75 places, 61 transitions, 222 flow. Second operand 3 states and 505 transitions. [2023-08-03 20:01:08,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 93 transitions, 516 flow [2023-08-03 20:01:08,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 93 transitions, 504 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 20:01:08,655 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 249 flow [2023-08-03 20:01:08,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2023-08-03 20:01:08,656 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2023-08-03 20:01:08,656 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 249 flow [2023-08-03 20:01:08,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:08,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:01:08,657 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:01:08,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-03 20:01:08,657 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 20:01:08,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:01:08,657 INFO L85 PathProgramCache]: Analyzing trace with hash 372608085, now seen corresponding path program 1 times [2023-08-03 20:01:08,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:01:08,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253276637] [2023-08-03 20:01:08,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:01:08,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:01:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:01:08,914 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:01:08,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:01:08,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253276637] [2023-08-03 20:01:08,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253276637] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:01:08,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299805473] [2023-08-03 20:01:08,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:01:08,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:01:08,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:01:08,933 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:01:08,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 20:01:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:01:09,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 20:01:09,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:01:09,081 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 20:01:09,081 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:01:09,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299805473] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:01:09,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:01:09,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-08-03 20:01:09,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233580399] [2023-08-03 20:01:09,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:01:09,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:01:09,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:01:09,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:01:09,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-08-03 20:01:09,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 342 [2023-08-03 20:01:09,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 249 flow. Second operand has 5 states, 5 states have (on average 150.6) internal successors, (753), 5 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:09,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:01:09,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 342 [2023-08-03 20:01:09,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:01:13,269 INFO L124 PetriNetUnfolderBase]: 42840/62115 cut-off events. [2023-08-03 20:01:13,270 INFO L125 PetriNetUnfolderBase]: For 37178/37178 co-relation queries the response was YES. [2023-08-03 20:01:13,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159702 conditions, 62115 events. 42840/62115 cut-off events. For 37178/37178 co-relation queries the response was YES. Maximal size of possible extension queue 1680. Compared 431557 event pairs, 15502 based on Foata normal form. 674/57948 useless extension candidates. Maximal degree in co-relation 158593. Up to 33595 conditions per place. [2023-08-03 20:01:13,693 INFO L140 encePairwiseOnDemand]: 330/342 looper letters, 193 selfloop transitions, 21 changer transitions 0/224 dead transitions. [2023-08-03 20:01:13,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 224 transitions, 1349 flow [2023-08-03 20:01:13,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 20:01:13,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 20:01:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1050 transitions. [2023-08-03 20:01:13,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116959064327485 [2023-08-03 20:01:13,696 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1050 transitions. [2023-08-03 20:01:13,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1050 transitions. [2023-08-03 20:01:13,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:01:13,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1050 transitions. [2023-08-03 20:01:13,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:13,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 342.0) internal successors, (2394), 7 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:13,700 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 342.0) internal successors, (2394), 7 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:13,700 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 249 flow. Second operand 6 states and 1050 transitions. [2023-08-03 20:01:13,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 224 transitions, 1349 flow [2023-08-03 20:01:14,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 224 transitions, 1340 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:01:14,073 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 398 flow [2023-08-03 20:01:14,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=398, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2023-08-03 20:01:14,074 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 26 predicate places. [2023-08-03 20:01:14,074 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 398 flow [2023-08-03 20:01:14,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.6) internal successors, (753), 5 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:14,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:01:14,075 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:01:14,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-03 20:01:14,277 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,SelfDestructingSolverStorable13 [2023-08-03 20:01:14,277 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:01:14,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:01:14,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1848692065, now seen corresponding path program 2 times [2023-08-03 20:01:14,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:01:14,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805378445] [2023-08-03 20:01:14,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:01:14,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:01:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:01:14,539 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:01:14,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:01:14,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805378445] [2023-08-03 20:01:14,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805378445] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:01:14,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990202230] [2023-08-03 20:01:14,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 20:01:14,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:01:14,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:01:14,756 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:01:14,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 20:01:14,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 20:01:14,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 20:01:14,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 20:01:14,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:01:14,923 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 20:01:14,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:01:14,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990202230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:01:14,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:01:14,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2023-08-03 20:01:14,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737425347] [2023-08-03 20:01:14,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:01:14,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:01:14,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:01:14,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:01:14,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-03 20:01:14,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 342 [2023-08-03 20:01:14,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 398 flow. Second operand has 5 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:14,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:01:14,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 342 [2023-08-03 20:01:14,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:01:27,285 INFO L124 PetriNetUnfolderBase]: 116393/174644 cut-off events. [2023-08-03 20:01:27,285 INFO L125 PetriNetUnfolderBase]: For 220270/221276 co-relation queries the response was YES. [2023-08-03 20:01:27,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531882 conditions, 174644 events. 116393/174644 cut-off events. For 220270/221276 co-relation queries the response was YES. Maximal size of possible extension queue 4874. Compared 1459221 event pairs, 32076 based on Foata normal form. 2174/169838 useless extension candidates. Maximal degree in co-relation 526281. Up to 63653 conditions per place. [2023-08-03 20:01:28,511 INFO L140 encePairwiseOnDemand]: 329/342 looper letters, 302 selfloop transitions, 64 changer transitions 0/377 dead transitions. [2023-08-03 20:01:28,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 377 transitions, 2501 flow [2023-08-03 20:01:28,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 20:01:28,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 20:01:28,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1547 transitions. [2023-08-03 20:01:28,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025990903183886 [2023-08-03 20:01:28,514 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1547 transitions. [2023-08-03 20:01:28,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1547 transitions. [2023-08-03 20:01:28,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:01:28,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1547 transitions. [2023-08-03 20:01:28,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 171.88888888888889) internal successors, (1547), 9 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:28,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 342.0) internal successors, (3420), 10 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:28,536 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 342.0) internal successors, (3420), 10 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:28,537 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 398 flow. Second operand 9 states and 1547 transitions. [2023-08-03 20:01:28,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 377 transitions, 2501 flow [2023-08-03 20:01:31,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 377 transitions, 2501 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 20:01:31,163 INFO L231 Difference]: Finished difference. Result has 97 places, 161 transitions, 1070 flow [2023-08-03 20:01:31,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1070, PETRI_PLACES=97, PETRI_TRANSITIONS=161} [2023-08-03 20:01:31,165 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 40 predicate places. [2023-08-03 20:01:31,165 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 161 transitions, 1070 flow [2023-08-03 20:01:31,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:31,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:01:31,180 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:01:31,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 20:01:31,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 20:01:31,384 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:01:31,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:01:31,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1883253003, now seen corresponding path program 3 times [2023-08-03 20:01:31,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:01:31,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023595232] [2023-08-03 20:01:31,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:01:31,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:01:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:01:31,573 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 20:01:31,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:01:31,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023595232] [2023-08-03 20:01:31,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023595232] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:01:31,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052602481] [2023-08-03 20:01:31,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-03 20:01:31,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:01:31,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:01:31,575 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:01:31,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 20:01:31,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-03 20:01:31,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 20:01:31,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-03 20:01:31,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:01:31,716 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 20:01:31,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:01:31,835 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 20:01:31,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052602481] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:01:31,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:01:31,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 3, 3] total 14 [2023-08-03 20:01:31,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579892250] [2023-08-03 20:01:31,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:01:31,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-03 20:01:31,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:01:31,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-03 20:01:31,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-08-03 20:01:31,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 342 [2023-08-03 20:01:31,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 161 transitions, 1070 flow. Second operand has 15 states, 15 states have (on average 140.4) internal successors, (2106), 15 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:01:31,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:01:31,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 342 [2023-08-03 20:01:31,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:02:21,930 INFO L124 PetriNetUnfolderBase]: 411956/599891 cut-off events. [2023-08-03 20:02:21,930 INFO L125 PetriNetUnfolderBase]: For 1559705/1563075 co-relation queries the response was YES. [2023-08-03 20:02:25,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2172932 conditions, 599891 events. 411956/599891 cut-off events. For 1559705/1563075 co-relation queries the response was YES. Maximal size of possible extension queue 16391. Compared 5373715 event pairs, 21481 based on Foata normal form. 22281/610135 useless extension candidates. Maximal degree in co-relation 2172022. Up to 114236 conditions per place. [2023-08-03 20:02:26,125 INFO L140 encePairwiseOnDemand]: 323/342 looper letters, 836 selfloop transitions, 545 changer transitions 1207/2597 dead transitions. [2023-08-03 20:02:26,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 2597 transitions, 21128 flow [2023-08-03 20:02:26,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-08-03 20:02:26,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-08-03 20:02:26,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 9722 transitions. [2023-08-03 20:02:26,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660147636851692 [2023-08-03 20:02:26,137 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 9722 transitions. [2023-08-03 20:02:26,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 9722 transitions. [2023-08-03 20:02:26,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:02:26,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 9722 transitions. [2023-08-03 20:02:26,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 159.37704918032787) internal successors, (9722), 61 states have internal predecessors, (9722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:02:26,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 342.0) internal successors, (21204), 62 states have internal predecessors, (21204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:02:26,170 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 342.0) internal successors, (21204), 62 states have internal predecessors, (21204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:02:26,170 INFO L175 Difference]: Start difference. First operand has 97 places, 161 transitions, 1070 flow. Second operand 61 states and 9722 transitions. [2023-08-03 20:02:26,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 2597 transitions, 21128 flow [2023-08-03 20:04:35,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 2597 transitions, 21102 flow, removed 13 selfloop flow, removed 0 redundant places. [2023-08-03 20:04:35,203 INFO L231 Difference]: Finished difference. Result has 186 places, 663 transitions, 6194 flow [2023-08-03 20:04:35,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=6194, PETRI_PLACES=186, PETRI_TRANSITIONS=663} [2023-08-03 20:04:35,203 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 129 predicate places. [2023-08-03 20:04:35,203 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 663 transitions, 6194 flow [2023-08-03 20:04:35,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 140.4) internal successors, (2106), 15 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:04:35,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:04:35,205 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:04:35,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 20:04:35,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-03 20:04:35,409 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:04:35,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:04:35,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1509815031, now seen corresponding path program 1 times [2023-08-03 20:04:35,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:04:35,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037944363] [2023-08-03 20:04:35,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:04:35,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:04:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:04:35,576 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 20:04:35,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:04:35,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037944363] [2023-08-03 20:04:35,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037944363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:04:35,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:04:35,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 20:04:35,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973868478] [2023-08-03 20:04:35,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:04:35,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 20:04:35,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:04:35,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 20:04:35,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:04:35,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 342 [2023-08-03 20:04:35,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 663 transitions, 6194 flow. Second operand has 6 states, 6 states have (on average 148.5) internal successors, (891), 6 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:04:35,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:04:35,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 342 [2023-08-03 20:04:35,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:04:56,734 INFO L124 PetriNetUnfolderBase]: 95293/146131 cut-off events. [2023-08-03 20:04:56,734 INFO L125 PetriNetUnfolderBase]: For 2410276/2410816 co-relation queries the response was YES. [2023-08-03 20:04:58,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797699 conditions, 146131 events. 95293/146131 cut-off events. For 2410276/2410816 co-relation queries the response was YES. Maximal size of possible extension queue 4075. Compared 1227918 event pairs, 23497 based on Foata normal form. 383/143998 useless extension candidates. Maximal degree in co-relation 797472. Up to 111425 conditions per place. [2023-08-03 20:04:59,169 INFO L140 encePairwiseOnDemand]: 328/342 looper letters, 581 selfloop transitions, 149 changer transitions 27/822 dead transitions. [2023-08-03 20:04:59,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 822 transitions, 8998 flow [2023-08-03 20:04:59,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 20:04:59,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 20:04:59,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1146 transitions. [2023-08-03 20:04:59,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47869674185463656 [2023-08-03 20:04:59,171 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1146 transitions. [2023-08-03 20:04:59,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1146 transitions. [2023-08-03 20:04:59,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:04:59,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1146 transitions. [2023-08-03 20:04:59,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 163.71428571428572) internal successors, (1146), 7 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:04:59,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 342.0) internal successors, (2736), 8 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:04:59,174 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 342.0) internal successors, (2736), 8 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:04:59,174 INFO L175 Difference]: Start difference. First operand has 186 places, 663 transitions, 6194 flow. Second operand 7 states and 1146 transitions. [2023-08-03 20:04:59,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 822 transitions, 8998 flow [2023-08-03 20:05:48,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 822 transitions, 8276 flow, removed 333 selfloop flow, removed 7 redundant places. [2023-08-03 20:05:48,827 INFO L231 Difference]: Finished difference. Result has 176 places, 693 transitions, 6268 flow [2023-08-03 20:05:48,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=5541, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6268, PETRI_PLACES=176, PETRI_TRANSITIONS=693} [2023-08-03 20:05:48,828 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 119 predicate places. [2023-08-03 20:05:48,828 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 693 transitions, 6268 flow [2023-08-03 20:05:48,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.5) internal successors, (891), 6 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:05:48,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:05:48,829 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:05:48,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-03 20:05:48,829 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:05:48,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:05:48,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1671061585, now seen corresponding path program 4 times [2023-08-03 20:05:48,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:05:48,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354995965] [2023-08-03 20:05:48,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:05:48,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:05:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:05:48,968 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 20:05:48,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:05:48,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354995965] [2023-08-03 20:05:48,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354995965] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:05:48,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:05:48,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-03 20:05:48,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145475635] [2023-08-03 20:05:48,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:05:48,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 20:05:48,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:05:48,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 20:05:48,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-03 20:05:49,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 342 [2023-08-03 20:05:49,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 693 transitions, 6268 flow. Second operand has 7 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:05:49,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:05:49,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 342 [2023-08-03 20:05:49,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:06:10,942 INFO L124 PetriNetUnfolderBase]: 102546/158179 cut-off events. [2023-08-03 20:06:10,942 INFO L125 PetriNetUnfolderBase]: For 2918441/2919114 co-relation queries the response was YES. [2023-08-03 20:06:12,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830813 conditions, 158179 events. 102546/158179 cut-off events. For 2918441/2919114 co-relation queries the response was YES. Maximal size of possible extension queue 4382. Compared 1350621 event pairs, 25505 based on Foata normal form. 2369/158510 useless extension candidates. Maximal degree in co-relation 830537. Up to 75503 conditions per place. [2023-08-03 20:06:13,713 INFO L140 encePairwiseOnDemand]: 328/342 looper letters, 665 selfloop transitions, 146 changer transitions 3/879 dead transitions. [2023-08-03 20:06:13,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 879 transitions, 9269 flow [2023-08-03 20:06:13,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 20:06:13,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 20:06:13,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1324 transitions. [2023-08-03 20:06:13,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48391812865497075 [2023-08-03 20:06:13,716 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1324 transitions. [2023-08-03 20:06:13,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1324 transitions. [2023-08-03 20:06:13,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:06:13,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1324 transitions. [2023-08-03 20:06:13,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 165.5) internal successors, (1324), 8 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:13,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 342.0) internal successors, (3078), 9 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:13,721 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 342.0) internal successors, (3078), 9 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:13,721 INFO L175 Difference]: Start difference. First operand has 176 places, 693 transitions, 6268 flow. Second operand 8 states and 1324 transitions. [2023-08-03 20:06:13,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 879 transitions, 9269 flow [2023-08-03 20:06:59,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 879 transitions, 9062 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-03 20:06:59,561 INFO L231 Difference]: Finished difference. Result has 179 places, 690 transitions, 6432 flow [2023-08-03 20:06:59,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=6069, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6432, PETRI_PLACES=179, PETRI_TRANSITIONS=690} [2023-08-03 20:06:59,562 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 122 predicate places. [2023-08-03 20:06:59,562 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 690 transitions, 6432 flow [2023-08-03 20:06:59,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:06:59,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:06:59,562 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:06:59,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-03 20:06:59,563 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:06:59,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:06:59,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1752992890, now seen corresponding path program 1 times [2023-08-03 20:06:59,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:06:59,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077426599] [2023-08-03 20:06:59,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:59,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:06:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 20:06:59,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:06:59,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077426599] [2023-08-03 20:06:59,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077426599] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:06:59,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295977530] [2023-08-03 20:06:59,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:59,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:06:59,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:06:59,718 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:06:59,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-03 20:06:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:06:59,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-03 20:06:59,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:06:59,868 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 20:06:59,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:07:00,014 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-03 20:07:00,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295977530] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-03 20:07:00,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-03 20:07:00,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 13 [2023-08-03 20:07:00,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434553359] [2023-08-03 20:07:00,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:07:00,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 20:07:00,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:07:00,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 20:07:00,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-08-03 20:07:00,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 342 [2023-08-03 20:07:00,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 690 transitions, 6432 flow. Second operand has 8 states, 8 states have (on average 145.125) internal successors, (1161), 8 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:07:00,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:07:00,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 342 [2023-08-03 20:07:00,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:07:27,249 INFO L124 PetriNetUnfolderBase]: 129934/201179 cut-off events. [2023-08-03 20:07:27,249 INFO L125 PetriNetUnfolderBase]: For 2761764/2763378 co-relation queries the response was YES. [2023-08-03 20:07:29,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021417 conditions, 201179 events. 129934/201179 cut-off events. For 2761764/2763378 co-relation queries the response was YES. Maximal size of possible extension queue 5177. Compared 1778523 event pairs, 19479 based on Foata normal form. 4578/204619 useless extension candidates. Maximal degree in co-relation 1010805. Up to 89359 conditions per place. [2023-08-03 20:07:30,544 INFO L140 encePairwiseOnDemand]: 326/342 looper letters, 588 selfloop transitions, 418 changer transitions 0/1075 dead transitions. [2023-08-03 20:07:30,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 1075 transitions, 11633 flow [2023-08-03 20:07:30,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-03 20:07:30,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-03 20:07:30,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1793 transitions. [2023-08-03 20:07:30,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2023-08-03 20:07:30,547 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1793 transitions. [2023-08-03 20:07:30,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1793 transitions. [2023-08-03 20:07:30,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:07:30,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1793 transitions. [2023-08-03 20:07:30,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 163.0) internal successors, (1793), 11 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:07:30,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 342.0) internal successors, (4104), 12 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:07:30,552 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 342.0) internal successors, (4104), 12 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:07:30,552 INFO L175 Difference]: Start difference. First operand has 179 places, 690 transitions, 6432 flow. Second operand 11 states and 1793 transitions. [2023-08-03 20:07:30,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 1075 transitions, 11633 flow [2023-08-03 20:08:48,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 1075 transitions, 11092 flow, removed 47 selfloop flow, removed 8 redundant places. [2023-08-03 20:08:48,877 INFO L231 Difference]: Finished difference. Result has 188 places, 822 transitions, 8947 flow [2023-08-03 20:08:48,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=5365, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8947, PETRI_PLACES=188, PETRI_TRANSITIONS=822} [2023-08-03 20:08:48,877 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 131 predicate places. [2023-08-03 20:08:48,877 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 822 transitions, 8947 flow [2023-08-03 20:08:48,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 145.125) internal successors, (1161), 8 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:08:48,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:08:48,878 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:08:48,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-03 20:08:49,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:08:49,083 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:08:49,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:08:49,083 INFO L85 PathProgramCache]: Analyzing trace with hash 475898319, now seen corresponding path program 1 times [2023-08-03 20:08:49,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:08:49,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723865593] [2023-08-03 20:08:49,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:08:49,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:08:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:08:49,257 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 20:08:49,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:08:49,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723865593] [2023-08-03 20:08:49,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723865593] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:08:49,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641292422] [2023-08-03 20:08:49,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:08:49,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:08:49,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:08:49,275 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:08:49,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-03 20:08:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:08:49,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-03 20:08:49,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:08:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 20:08:49,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:08:49,625 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 20:08:49,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641292422] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-03 20:08:49,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-03 20:08:49,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 17 [2023-08-03 20:08:49,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266944008] [2023-08-03 20:08:49,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:08:49,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-03 20:08:49,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:08:49,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-03 20:08:49,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2023-08-03 20:08:49,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 342 [2023-08-03 20:08:49,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 822 transitions, 8947 flow. Second operand has 10 states, 10 states have (on average 144.2) internal successors, (1442), 10 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:08:49,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:08:49,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 342 [2023-08-03 20:08:49,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:09:11,923 INFO L124 PetriNetUnfolderBase]: 89429/140617 cut-off events. [2023-08-03 20:09:11,923 INFO L125 PetriNetUnfolderBase]: For 2229939/2232797 co-relation queries the response was YES. [2023-08-03 20:09:13,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778065 conditions, 140617 events. 89429/140617 cut-off events. For 2229939/2232797 co-relation queries the response was YES. Maximal size of possible extension queue 3828. Compared 1219875 event pairs, 12687 based on Foata normal form. 4692/144051 useless extension candidates. Maximal degree in co-relation 777782. Up to 69496 conditions per place. [2023-08-03 20:09:14,549 INFO L140 encePairwiseOnDemand]: 328/342 looper letters, 419 selfloop transitions, 325 changer transitions 61/849 dead transitions. [2023-08-03 20:09:14,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 849 transitions, 10422 flow [2023-08-03 20:09:14,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-03 20:09:14,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-03 20:09:14,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1637 transitions. [2023-08-03 20:09:14,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47865497076023394 [2023-08-03 20:09:14,551 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1637 transitions. [2023-08-03 20:09:14,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1637 transitions. [2023-08-03 20:09:14,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:09:14,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1637 transitions. [2023-08-03 20:09:14,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 163.7) internal successors, (1637), 10 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:09:14,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 342.0) internal successors, (3762), 11 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:09:14,554 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 342.0) internal successors, (3762), 11 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:09:14,555 INFO L175 Difference]: Start difference. First operand has 188 places, 822 transitions, 8947 flow. Second operand 10 states and 1637 transitions. [2023-08-03 20:09:14,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 849 transitions, 10422 flow [2023-08-03 20:10:00,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 849 transitions, 9582 flow, removed 272 selfloop flow, removed 15 redundant places. [2023-08-03 20:10:00,570 INFO L231 Difference]: Finished difference. Result has 178 places, 596 transitions, 7360 flow [2023-08-03 20:10:00,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=5819, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7360, PETRI_PLACES=178, PETRI_TRANSITIONS=596} [2023-08-03 20:10:00,571 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 121 predicate places. [2023-08-03 20:10:00,571 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 596 transitions, 7360 flow [2023-08-03 20:10:00,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 144.2) internal successors, (1442), 10 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:10:00,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:10:00,571 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:10:00,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-03 20:10:00,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:10:00,776 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 20:10:00,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:10:00,776 INFO L85 PathProgramCache]: Analyzing trace with hash 608534479, now seen corresponding path program 5 times [2023-08-03 20:10:00,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:10:00,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090719590] [2023-08-03 20:10:00,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:10:00,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:10:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:10:00,909 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 20:10:00,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:10:00,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090719590] [2023-08-03 20:10:00,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090719590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:10:00,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:10:00,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 20:10:00,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970330112] [2023-08-03 20:10:00,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:10:00,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 20:10:00,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:10:00,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 20:10:00,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 20:10:00,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 342 [2023-08-03 20:10:00,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 596 transitions, 7360 flow. Second operand has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:10:00,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:10:00,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 342 [2023-08-03 20:10:00,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:10:22,498 INFO L124 PetriNetUnfolderBase]: 100816/158942 cut-off events. [2023-08-03 20:10:22,498 INFO L125 PetriNetUnfolderBase]: For 1161542/1166081 co-relation queries the response was YES. [2023-08-03 20:10:24,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787258 conditions, 158942 events. 100816/158942 cut-off events. For 1161542/1166081 co-relation queries the response was YES. Maximal size of possible extension queue 4272. Compared 1402992 event pairs, 24944 based on Foata normal form. 3861/161178 useless extension candidates. Maximal degree in co-relation 779187. Up to 124966 conditions per place. [2023-08-03 20:10:24,242 INFO L140 encePairwiseOnDemand]: 337/342 looper letters, 0 selfloop transitions, 0 changer transitions 823/823 dead transitions. [2023-08-03 20:10:24,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 823 transitions, 11497 flow [2023-08-03 20:10:24,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:10:24,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:10:24,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 672 transitions. [2023-08-03 20:10:24,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2023-08-03 20:10:24,243 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 672 transitions. [2023-08-03 20:10:24,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 672 transitions. [2023-08-03 20:10:24,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:10:24,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 672 transitions. [2023-08-03 20:10:24,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:10:24,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:10:24,246 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:10:24,246 INFO L175 Difference]: Start difference. First operand has 178 places, 596 transitions, 7360 flow. Second operand 4 states and 672 transitions. [2023-08-03 20:10:24,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 823 transitions, 11497 flow [2023-08-03 20:10:55,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 823 transitions, 11257 flow, removed 54 selfloop flow, removed 9 redundant places. [2023-08-03 20:10:55,313 INFO L231 Difference]: Finished difference. Result has 169 places, 0 transitions, 0 flow [2023-08-03 20:10:55,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=342, PETRI_DIFFERENCE_MINUEND_FLOW=7155, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=169, PETRI_TRANSITIONS=0} [2023-08-03 20:10:55,313 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 112 predicate places. [2023-08-03 20:10:55,313 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 0 transitions, 0 flow [2023-08-03 20:10:55,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:10:55,314 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 20:10:55,314 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 20:10:55,314 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 20:10:55,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-03 20:10:55,314 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:10:55,315 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 20:10:55,315 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 20:10:55,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 08:10:55 BasicIcfg [2023-08-03 20:10:55,317 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 20:10:55,318 INFO L158 Benchmark]: Toolchain (without parser) took 619881.33ms. Allocated memory was 528.5MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 491.1MB in the beginning and 10.6GB in the end (delta: -10.1GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. [2023-08-03 20:10:55,318 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 373.3MB. Free memory is still 325.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 20:10:55,318 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.49ms. Allocated memory is still 528.5MB. Free memory was 490.7MB in the beginning and 479.4MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-03 20:10:55,318 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.07ms. Allocated memory is still 528.5MB. Free memory was 479.4MB in the beginning and 477.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 20:10:55,318 INFO L158 Benchmark]: Boogie Preprocessor took 32.70ms. Allocated memory is still 528.5MB. Free memory was 477.3MB in the beginning and 476.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 20:10:55,318 INFO L158 Benchmark]: RCFGBuilder took 427.92ms. Allocated memory is still 528.5MB. Free memory was 475.7MB in the beginning and 457.5MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 20:10:55,319 INFO L158 Benchmark]: TraceAbstraction took 619203.04ms. Allocated memory was 528.5MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 456.8MB in the beginning and 10.6GB in the end (delta: -10.2GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. [2023-08-03 20:10:55,319 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 373.3MB. Free memory is still 325.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 185.49ms. Allocated memory is still 528.5MB. Free memory was 490.7MB in the beginning and 479.4MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.07ms. Allocated memory is still 528.5MB. Free memory was 479.4MB in the beginning and 477.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.70ms. Allocated memory is still 528.5MB. Free memory was 477.3MB in the beginning and 476.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 427.92ms. Allocated memory is still 528.5MB. Free memory was 475.7MB in the beginning and 457.5MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 619203.04ms. Allocated memory was 528.5MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 456.8MB in the beginning and 10.6GB in the end (delta: -10.2GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 146 PlacesBefore, 36 PlacesAfterwards, 158 TransitionsBefore, 37 TransitionsAfterwards, 2224 CoEnabledTransitionPairs, 8 FixpointIterations, 70 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 17 TrivialYvCompositions, 14 ConcurrentYvCompositions, 11 ChoiceCompositions, 153 TotalNumberOfCompositions, 8482 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4656, independent: 4447, independent conditional: 0, independent unconditional: 4447, dependent: 209, dependent conditional: 0, dependent unconditional: 209, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1270, independent: 1250, independent conditional: 0, independent unconditional: 1250, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4656, independent: 3197, independent conditional: 0, independent unconditional: 3197, dependent: 189, dependent conditional: 0, dependent unconditional: 189, unknown: 1270, unknown conditional: 0, unknown unconditional: 1270] , Statistics on independence cache: Total cache size (in pairs): 168, Positive cache size: 157, Positive conditional cache size: 0, Positive unconditional cache size: 157, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 169 PlacesBefore, 57 PlacesAfterwards, 183 TransitionsBefore, 60 TransitionsAfterwards, 5544 CoEnabledTransitionPairs, 8 FixpointIterations, 69 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 20 ConcurrentYvCompositions, 11 ChoiceCompositions, 159 TotalNumberOfCompositions, 30190 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13576, independent: 13160, independent conditional: 0, independent unconditional: 13160, dependent: 416, dependent conditional: 0, dependent unconditional: 416, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2757, independent: 2717, independent conditional: 0, independent unconditional: 2717, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13576, independent: 10443, independent conditional: 0, independent unconditional: 10443, dependent: 376, dependent conditional: 0, dependent unconditional: 376, unknown: 2757, unknown conditional: 0, unknown unconditional: 2757] , Statistics on independence cache: Total cache size (in pairs): 497, Positive cache size: 473, Positive conditional cache size: 0, Positive unconditional cache size: 473, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 115]: 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, 161 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: 3.3s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 69 IncrementalHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 69 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=102occurred 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, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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, 180 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: 615.7s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 605.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3484 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3253 mSDsluCounter, 865 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 798 mSDsCounter, 396 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8326 IncrementalHoareTripleChecker+Invalid, 8722 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 396 mSolverCounterUnsat, 67 mSDtfsCounter, 8326 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 956 GetRequests, 765 SyntacticMatches, 15 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1753 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8947occurred in iteration=17, InterpolantAutomatonStates: 157, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 1226 NumberOfCodeBlocks, 1201 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1488 ConstructedInterpolants, 0 QuantifiedInterpolants, 4300 SizeOfPredicates, 15 NumberOfNonLiveVariables, 2242 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 40 InterpolantComputations, 14 PerfectInterpolantSequences, 534/590 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 20:10:55,334 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...