/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_bench-exp2x9.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:23:54,099 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:23:54,173 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:23:54,180 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:23:54,180 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:23:54,181 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:23:54,181 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:23:54,209 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:23:54,210 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:23:54,213 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:23:54,214 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:23:54,214 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:23:54,216 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:23:54,217 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:23:54,218 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:23:54,218 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:23:54,218 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:23:54,218 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:23:54,218 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:23:54,219 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:23:54,219 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:23:54,219 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:23:54,219 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:23:54,220 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:23:54,220 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:23:54,221 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:23:54,221 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:23:54,222 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:23:54,222 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:23:54,222 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:23:54,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:23:54,223 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:23:54,223 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:23:54,223 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:23:54,223 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:23:54,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:23:54,224 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:23:54,224 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:23:54,224 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:23:54,224 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:23:54,224 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:23:54,225 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:23:54,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:23:54,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:23:54,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:23:54,481 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:23:54,481 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:23:54,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x9.wvr_bound2.c [2023-08-03 19:23:55,632 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:23:55,807 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:23:55,808 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x9.wvr_bound2.c [2023-08-03 19:23:55,815 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f72f6fa1c/b116c23586a742c4af6c57fe2f64076e/FLAG3b8256da3 [2023-08-03 19:23:55,833 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f72f6fa1c/b116c23586a742c4af6c57fe2f64076e [2023-08-03 19:23:55,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:23:55,837 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:23:55,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:23:55,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:23:55,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:23:55,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:23:55" (1/1) ... [2023-08-03 19:23:55,842 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@652ef1c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:23:55, skipping insertion in model container [2023-08-03 19:23:55,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:23:55" (1/1) ... [2023-08-03 19:23:55,862 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:23:56,025 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_bench-exp2x9.wvr_bound2.c[2993,3006] [2023-08-03 19:23:56,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:23:56,034 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:23:56,057 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_bench-exp2x9.wvr_bound2.c[2993,3006] [2023-08-03 19:23:56,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:23:56,069 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:23:56,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:23:56 WrapperNode [2023-08-03 19:23:56,069 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:23:56,070 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:23:56,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:23:56,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:23:56,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:23:56" (1/1) ... [2023-08-03 19:23:56,084 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:23:56" (1/1) ... [2023-08-03 19:23:56,105 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 160 [2023-08-03 19:23:56,106 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:23:56,106 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:23:56,107 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:23:56,107 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:23:56,114 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:23:56" (1/1) ... [2023-08-03 19:23:56,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:23:56" (1/1) ... [2023-08-03 19:23:56,117 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:23:56" (1/1) ... [2023-08-03 19:23:56,117 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:23:56" (1/1) ... [2023-08-03 19:23:56,123 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:23:56" (1/1) ... [2023-08-03 19:23:56,128 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:23:56" (1/1) ... [2023-08-03 19:23:56,129 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:23:56" (1/1) ... [2023-08-03 19:23:56,130 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:23:56" (1/1) ... [2023-08-03 19:23:56,133 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:23:56,134 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:23:56,134 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:23:56,134 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:23:56,135 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:23:56" (1/1) ... [2023-08-03 19:23:56,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:23:56,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:23:56,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 19:23:56,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 19:23:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:23:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:23:56,219 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:23:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:23:56,219 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:23:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 19:23:56,219 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 19:23:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-03 19:23:56,220 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-03 19:23:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:23:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:23:56,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:23:56,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:23:56,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:23:56,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:23:56,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:23:56,224 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 19:23:56,346 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:23:56,349 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:23:56,710 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:23:56,717 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:23:56,718 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-03 19:23:56,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:23:56 BoogieIcfgContainer [2023-08-03 19:23:56,720 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:23:56,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:23:56,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:23:56,724 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:23:56,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:23:55" (1/3) ... [2023-08-03 19:23:56,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af37353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:23:56, skipping insertion in model container [2023-08-03 19:23:56,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:23:56" (2/3) ... [2023-08-03 19:23:56,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af37353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:23:56, skipping insertion in model container [2023-08-03 19:23:56,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:23:56" (3/3) ... [2023-08-03 19:23:56,727 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_bench-exp2x9.wvr_bound2.c [2023-08-03 19:23:56,733 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:23:56,740 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:23:56,740 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:23:56,740 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:23:56,812 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-03 19:23:56,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 215 transitions, 498 flow [2023-08-03 19:23:57,140 INFO L124 PetriNetUnfolderBase]: 269/1527 cut-off events. [2023-08-03 19:23:57,141 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-03 19:23:57,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1705 conditions, 1527 events. 269/1527 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 10407 event pairs, 0 based on Foata normal form. 0/1276 useless extension candidates. Maximal degree in co-relation 826. Up to 33 conditions per place. [2023-08-03 19:23:57,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 215 transitions, 498 flow [2023-08-03 19:23:57,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 190 places, 215 transitions, 498 flow [2023-08-03 19:23:57,179 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:23:57,197 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 215 transitions, 498 flow [2023-08-03 19:23:57,203 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 215 transitions, 498 flow [2023-08-03 19:23:57,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 215 transitions, 498 flow [2023-08-03 19:23:57,371 INFO L124 PetriNetUnfolderBase]: 269/1527 cut-off events. [2023-08-03 19:23:57,371 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-03 19:23:57,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1705 conditions, 1527 events. 269/1527 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 10407 event pairs, 0 based on Foata normal form. 0/1276 useless extension candidates. Maximal degree in co-relation 826. Up to 33 conditions per place. [2023-08-03 19:23:57,417 INFO L119 LiptonReduction]: Number of co-enabled transitions 11424 [2023-08-03 19:24:01,193 INFO L134 LiptonReduction]: Checked pairs total: 48078 [2023-08-03 19:24:01,193 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-03 19:24:01,207 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:24:01,212 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;@60d598b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:24:01,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 19:24:01,217 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:24:01,218 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2023-08-03 19:24:01,218 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:24:01,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:24:01,219 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:24:01,219 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:24:01,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:24:01,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1034070890, now seen corresponding path program 1 times [2023-08-03 19:24:01,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:24:01,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551497061] [2023-08-03 19:24:01,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:24:01,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:24:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:24:01,347 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:24:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:24:01,382 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:24:01,384 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:24:01,385 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 19:24:01,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 19:24:01,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-03 19:24:01,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 19:24:01,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-03 19:24:01,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:24:01,387 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 19:24:01,390 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:24:01,390 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:24:01,428 INFO L144 ThreadInstanceAdder]: Constructed 32 joinOtherThreadTransitions. [2023-08-03 19:24:01,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 283 transitions, 710 flow [2023-08-03 19:24:04,437 INFO L124 PetriNetUnfolderBase]: 5482/20520 cut-off events. [2023-08-03 19:24:04,438 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-03 19:24:04,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24905 conditions, 20520 events. 5482/20520 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 217016 event pairs, 162 based on Foata normal form. 0/17559 useless extension candidates. Maximal degree in co-relation 12379. Up to 1024 conditions per place. [2023-08-03 19:24:04,758 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 283 transitions, 710 flow [2023-08-03 19:24:04,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 283 transitions, 710 flow [2023-08-03 19:24:04,944 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:24:04,945 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 283 transitions, 710 flow [2023-08-03 19:24:04,945 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 283 transitions, 710 flow [2023-08-03 19:24:04,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 283 transitions, 710 flow [2023-08-03 19:24:07,257 INFO L124 PetriNetUnfolderBase]: 5482/20520 cut-off events. [2023-08-03 19:24:07,257 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-03 19:24:07,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24905 conditions, 20520 events. 5482/20520 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 217016 event pairs, 162 based on Foata normal form. 0/17559 useless extension candidates. Maximal degree in co-relation 12379. Up to 1024 conditions per place. [2023-08-03 19:24:07,790 INFO L119 LiptonReduction]: Number of co-enabled transitions 30912 [2023-08-03 19:24:11,345 INFO L134 LiptonReduction]: Checked pairs total: 201808 [2023-08-03 19:24:11,346 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-08-03 19:24:11,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:24:11,348 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;@60d598b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:24:11,349 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 19:24:11,352 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:24:11,353 INFO L124 PetriNetUnfolderBase]: 0/64 cut-off events. [2023-08-03 19:24:11,353 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-03 19:24:11,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:24:11,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:24:11,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:24:11,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:24:11,354 INFO L85 PathProgramCache]: Analyzing trace with hash 932470765, now seen corresponding path program 1 times [2023-08-03 19:24:11,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:24:11,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161249292] [2023-08-03 19:24:11,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:24:11,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:24:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:24:11,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:24:11,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:24:11,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161249292] [2023-08-03 19:24:11,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161249292] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:24:11,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:24:11,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:24:11,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357786615] [2023-08-03 19:24:11,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:24:11,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:24:11,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:24:11,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:24:11,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:24:11,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 439 [2023-08-03 19:24:11,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 150 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 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 19:24:11,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:24:11,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 439 [2023-08-03 19:24:11,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:24:50,042 INFO L124 PetriNetUnfolderBase]: 308546/431095 cut-off events. [2023-08-03 19:24:50,042 INFO L125 PetriNetUnfolderBase]: For 99890/99890 co-relation queries the response was YES. [2023-08-03 19:24:53,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 903983 conditions, 431095 events. 308546/431095 cut-off events. For 99890/99890 co-relation queries the response was YES. Maximal size of possible extension queue 6718. Compared 3188400 event pairs, 212879 based on Foata normal form. 0/401772 useless extension candidates. Maximal degree in co-relation 373689. Up to 398775 conditions per place. [2023-08-03 19:24:56,959 INFO L140 encePairwiseOnDemand]: 435/439 looper letters, 74 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2023-08-03 19:24:56,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 152 transitions, 600 flow [2023-08-03 19:24:56,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:24:56,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:24:56,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 738 transitions. [2023-08-03 19:24:56,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5603644646924829 [2023-08-03 19:24:56,976 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 738 transitions. [2023-08-03 19:24:56,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 738 transitions. [2023-08-03 19:24:56,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:24:56,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 738 transitions. [2023-08-03 19:24:56,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:24:56,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:24:56,991 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:24:56,993 INFO L175 Difference]: Start difference. First operand has 127 places, 150 transitions, 444 flow. Second operand 3 states and 738 transitions. [2023-08-03 19:24:56,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 152 transitions, 600 flow [2023-08-03 19:24:57,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 152 transitions, 600 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:24:57,123 INFO L231 Difference]: Finished difference. Result has 129 places, 150 transitions, 454 flow [2023-08-03 19:24:57,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=129, PETRI_TRANSITIONS=150} [2023-08-03 19:24:57,129 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 2 predicate places. [2023-08-03 19:24:57,129 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 150 transitions, 454 flow [2023-08-03 19:24:57,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 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 19:24:57,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:24:57,133 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:24:57,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:24:57,137 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:24:57,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:24:57,141 INFO L85 PathProgramCache]: Analyzing trace with hash -13173220, now seen corresponding path program 1 times [2023-08-03 19:24:57,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:24:57,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910458558] [2023-08-03 19:24:57,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:24:57,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:24:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:24:57,277 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:24:57,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:24:57,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910458558] [2023-08-03 19:24:57,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910458558] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:24:57,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567614672] [2023-08-03 19:24:57,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:24:57,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:24:57,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:24:57,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:24:57,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 19:24:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:24:57,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:24:57,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:24:57,418 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:24:57,418 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:24:57,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567614672] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:24:57,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:24:57,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:24:57,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947696417] [2023-08-03 19:24:57,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:24:57,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:24:57,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:24:57,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:24:57,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:24:57,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 439 [2023-08-03 19:24:57,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 150 transitions, 454 flow. Second operand has 5 states, 5 states have (on average 220.6) internal successors, (1103), 5 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:24:57,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:24:57,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 439 [2023-08-03 19:24:57,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:25:40,151 INFO L124 PetriNetUnfolderBase]: 308542/431085 cut-off events. [2023-08-03 19:25:40,151 INFO L125 PetriNetUnfolderBase]: For 99892/99892 co-relation queries the response was YES. [2023-08-03 19:25:44,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 903978 conditions, 431085 events. 308542/431085 cut-off events. For 99892/99892 co-relation queries the response was YES. Maximal size of possible extension queue 6718. Compared 3188931 event pairs, 182676 based on Foata normal form. 4/401772 useless extension candidates. Maximal degree in co-relation 560490. Up to 398754 conditions per place. [2023-08-03 19:25:47,087 INFO L140 encePairwiseOnDemand]: 435/439 looper letters, 75 selfloop transitions, 4 changer transitions 0/154 dead transitions. [2023-08-03 19:25:47,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 154 transitions, 618 flow [2023-08-03 19:25:47,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:25:47,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:25:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1175 transitions. [2023-08-03 19:25:47,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353075170842825 [2023-08-03 19:25:47,092 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1175 transitions. [2023-08-03 19:25:47,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1175 transitions. [2023-08-03 19:25:47,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:25:47,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1175 transitions. [2023-08-03 19:25:47,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:25:47,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 439.0) internal successors, (2634), 6 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:25:47,101 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 439.0) internal successors, (2634), 6 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:25:47,101 INFO L175 Difference]: Start difference. First operand has 129 places, 150 transitions, 454 flow. Second operand 5 states and 1175 transitions. [2023-08-03 19:25:47,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 154 transitions, 618 flow [2023-08-03 19:25:47,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 154 transitions, 606 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:25:47,195 INFO L231 Difference]: Finished difference. Result has 131 places, 150 transitions, 457 flow [2023-08-03 19:25:47,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=457, PETRI_PLACES=131, PETRI_TRANSITIONS=150} [2023-08-03 19:25:47,196 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 4 predicate places. [2023-08-03 19:25:47,196 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 150 transitions, 457 flow [2023-08-03 19:25:47,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 220.6) internal successors, (1103), 5 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:25:47,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:25:47,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:25:47,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 19:25:47,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:25:47,402 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:25:47,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:25:47,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1074803723, now seen corresponding path program 1 times [2023-08-03 19:25:47,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:25:47,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059314433] [2023-08-03 19:25:47,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:25:47,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:25:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:25:47,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:25:47,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:25:47,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059314433] [2023-08-03 19:25:47,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059314433] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:25:47,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61734281] [2023-08-03 19:25:47,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:25:47,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:25:47,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:25:47,459 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:25:47,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 19:25:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:25:47,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:25:47,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:25:47,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:25:47,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:25:47,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61734281] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:25:47,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:25:47,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:25:47,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118976901] [2023-08-03 19:25:47,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:25:47,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:25:47,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:25:47,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:25:47,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:25:47,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 439 [2023-08-03 19:25:47,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 150 transitions, 457 flow. Second operand has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:25:47,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:25:47,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 439 [2023-08-03 19:25:47,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:26:29,508 INFO L124 PetriNetUnfolderBase]: 306188/425335 cut-off events. [2023-08-03 19:26:29,508 INFO L125 PetriNetUnfolderBase]: For 93362/93362 co-relation queries the response was YES. [2023-08-03 19:26:33,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885693 conditions, 425335 events. 306188/425335 cut-off events. For 93362/93362 co-relation queries the response was YES. Maximal size of possible extension queue 6965. Compared 3106821 event pairs, 211814 based on Foata normal form. 0/396138 useless extension candidates. Maximal degree in co-relation 391108. Up to 395497 conditions per place. [2023-08-03 19:26:36,238 INFO L140 encePairwiseOnDemand]: 436/439 looper letters, 77 selfloop transitions, 3 changer transitions 0/155 dead transitions. [2023-08-03 19:26:36,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 155 transitions, 627 flow [2023-08-03 19:26:36,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:26:36,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:26:36,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 739 transitions. [2023-08-03 19:26:36,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611237661351557 [2023-08-03 19:26:36,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 739 transitions. [2023-08-03 19:26:36,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 739 transitions. [2023-08-03 19:26:36,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:26:36,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 739 transitions. [2023-08-03 19:26:36,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.33333333333334) internal successors, (739), 3 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:26:36,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:26:36,245 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:26:36,245 INFO L175 Difference]: Start difference. First operand has 131 places, 150 transitions, 457 flow. Second operand 3 states and 739 transitions. [2023-08-03 19:26:36,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 155 transitions, 627 flow [2023-08-03 19:26:36,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 155 transitions, 620 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:26:36,330 INFO L231 Difference]: Finished difference. Result has 132 places, 151 transitions, 465 flow [2023-08-03 19:26:36,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=465, PETRI_PLACES=132, PETRI_TRANSITIONS=151} [2023-08-03 19:26:36,331 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 5 predicate places. [2023-08-03 19:26:36,331 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 151 transitions, 465 flow [2023-08-03 19:26:36,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:26:36,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:26:36,332 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:26:36,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 19:26:36,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 19:26:36,537 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:26:36,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:26:36,537 INFO L85 PathProgramCache]: Analyzing trace with hash -23824915, now seen corresponding path program 1 times [2023-08-03 19:26:36,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:26:36,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696672898] [2023-08-03 19:26:36,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:26:36,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:26:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:26:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:26:36,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:26:36,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696672898] [2023-08-03 19:26:36,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696672898] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:26:36,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190552344] [2023-08-03 19:26:36,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:26:36,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:26:36,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:26:36,609 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:26:36,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 19:26:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:26:36,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:26:36,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:26:36,695 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:26:36,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:26:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:26:36,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190552344] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:26:36,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:26:36,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:26:36,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910646957] [2023-08-03 19:26:36,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:26:36,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:26:36,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:26:36,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:26:36,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:26:36,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 439 [2023-08-03 19:26:36,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 151 transitions, 465 flow. Second operand has 5 states, 5 states have (on average 221.6) internal successors, (1108), 5 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:26:36,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:26:36,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 439 [2023-08-03 19:26:36,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:27:18,417 INFO L124 PetriNetUnfolderBase]: 300374/414317 cut-off events. [2023-08-03 19:27:18,417 INFO L125 PetriNetUnfolderBase]: For 92512/92512 co-relation queries the response was YES. [2023-08-03 19:27:22,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866045 conditions, 414317 events. 300374/414317 cut-off events. For 92512/92512 co-relation queries the response was YES. Maximal size of possible extension queue 6722. Compared 2965744 event pairs, 179558 based on Foata normal form. 2/385590 useless extension candidates. Maximal degree in co-relation 336342. Up to 388021 conditions per place. [2023-08-03 19:27:25,215 INFO L140 encePairwiseOnDemand]: 436/439 looper letters, 76 selfloop transitions, 3 changer transitions 0/154 dead transitions. [2023-08-03 19:27:25,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 154 transitions, 624 flow [2023-08-03 19:27:25,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:27:25,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:27:25,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 955 transitions. [2023-08-03 19:27:25,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5438496583143508 [2023-08-03 19:27:25,218 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 955 transitions. [2023-08-03 19:27:25,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 955 transitions. [2023-08-03 19:27:25,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:27:25,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 955 transitions. [2023-08-03 19:27:25,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 238.75) internal successors, (955), 4 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:27:25,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:27:25,225 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:27:25,225 INFO L175 Difference]: Start difference. First operand has 132 places, 151 transitions, 465 flow. Second operand 4 states and 955 transitions. [2023-08-03 19:27:25,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 154 transitions, 624 flow [2023-08-03 19:27:25,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 154 transitions, 622 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:27:25,281 INFO L231 Difference]: Finished difference. Result has 134 places, 150 transitions, 460 flow [2023-08-03 19:27:25,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=460, PETRI_PLACES=134, PETRI_TRANSITIONS=150} [2023-08-03 19:27:25,281 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 7 predicate places. [2023-08-03 19:27:25,281 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 150 transitions, 460 flow [2023-08-03 19:27:25,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.6) internal successors, (1108), 5 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:27:25,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:27:25,282 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:27:25,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 19:27:25,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:27:25,483 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:27:25,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:27:25,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1985037692, now seen corresponding path program 1 times [2023-08-03 19:27:25,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:27:25,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866549674] [2023-08-03 19:27:25,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:27:25,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:27:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:27:25,562 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:27:25,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:27:25,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866549674] [2023-08-03 19:27:25,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866549674] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:27:25,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439692744] [2023-08-03 19:27:25,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:27:25,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:27:25,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:27:25,565 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:27:25,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 19:27:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:27:25,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:27:25,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:27:25,669 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:27:25,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:27:25,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439692744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:27:25,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:27:25,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:27:25,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429255206] [2023-08-03 19:27:25,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:27:25,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:27:25,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:27:25,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:27:25,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:27:25,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 439 [2023-08-03 19:27:25,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 150 transitions, 460 flow. Second operand has 5 states, 5 states have (on average 221.6) internal successors, (1108), 5 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:27:25,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:27:25,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 439 [2023-08-03 19:27:25,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:28:06,357 INFO L124 PetriNetUnfolderBase]: 300342/414261 cut-off events. [2023-08-03 19:28:06,357 INFO L125 PetriNetUnfolderBase]: For 92492/92492 co-relation queries the response was YES. [2023-08-03 19:28:10,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 865924 conditions, 414261 events. 300342/414261 cut-off events. For 92492/92492 co-relation queries the response was YES. Maximal size of possible extension queue 6722. Compared 2965148 event pairs, 120480 based on Foata normal form. 16/385548 useless extension candidates. Maximal degree in co-relation 541282. Up to 387852 conditions per place. [2023-08-03 19:28:13,395 INFO L140 encePairwiseOnDemand]: 435/439 looper letters, 82 selfloop transitions, 4 changer transitions 0/160 dead transitions. [2023-08-03 19:28:13,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 160 transitions, 650 flow [2023-08-03 19:28:13,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:28:13,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:28:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1181 transitions. [2023-08-03 19:28:13,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380410022779043 [2023-08-03 19:28:13,398 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1181 transitions. [2023-08-03 19:28:13,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1181 transitions. [2023-08-03 19:28:13,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:28:13,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1181 transitions. [2023-08-03 19:28:13,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 236.2) internal successors, (1181), 5 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:28:13,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 439.0) internal successors, (2634), 6 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:28:13,406 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 439.0) internal successors, (2634), 6 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:28:13,406 INFO L175 Difference]: Start difference. First operand has 134 places, 150 transitions, 460 flow. Second operand 5 states and 1181 transitions. [2023-08-03 19:28:13,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 160 transitions, 650 flow [2023-08-03 19:28:13,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 160 transitions, 634 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:28:13,517 INFO L231 Difference]: Finished difference. Result has 134 places, 150 transitions, 459 flow [2023-08-03 19:28:13,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=459, PETRI_PLACES=134, PETRI_TRANSITIONS=150} [2023-08-03 19:28:13,523 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 7 predicate places. [2023-08-03 19:28:13,525 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 150 transitions, 459 flow [2023-08-03 19:28:13,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.6) internal successors, (1108), 5 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:28:13,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:28:13,526 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:28:13,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 19:28:13,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:28:13,731 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:28:13,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:28:13,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1343461481, now seen corresponding path program 1 times [2023-08-03 19:28:13,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:28:13,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50053485] [2023-08-03 19:28:13,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:28:13,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:28:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:28:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:28:13,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:28:13,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50053485] [2023-08-03 19:28:13,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50053485] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:28:13,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154495764] [2023-08-03 19:28:13,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:28:13,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:28:13,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:28:13,818 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:28:13,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 19:28:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:28:13,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:28:13,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:28:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 19:28:13,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:28:13,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154495764] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:28:13,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:28:13,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:28:13,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356231610] [2023-08-03 19:28:13,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:28:13,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:28:13,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:28:13,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:28:13,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:28:13,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 439 [2023-08-03 19:28:13,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 150 transitions, 459 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:28:13,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:28:13,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 439 [2023-08-03 19:28:13,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:28:54,073 INFO L124 PetriNetUnfolderBase]: 298982/411719 cut-off events. [2023-08-03 19:28:54,074 INFO L125 PetriNetUnfolderBase]: For 79662/79662 co-relation queries the response was YES. [2023-08-03 19:28:58,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852604 conditions, 411719 events. 298982/411719 cut-off events. For 79662/79662 co-relation queries the response was YES. Maximal size of possible extension queue 7287. Compared 2932077 event pairs, 208958 based on Foata normal form. 0/383152 useless extension candidates. Maximal degree in co-relation 533434. Up to 385901 conditions per place. [2023-08-03 19:29:01,292 INFO L140 encePairwiseOnDemand]: 436/439 looper letters, 80 selfloop transitions, 3 changer transitions 0/157 dead transitions. [2023-08-03 19:29:01,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 157 transitions, 639 flow [2023-08-03 19:29:01,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:29:01,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:29:01,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 741 transitions. [2023-08-03 19:29:01,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5626423690205011 [2023-08-03 19:29:01,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 741 transitions. [2023-08-03 19:29:01,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 741 transitions. [2023-08-03 19:29:01,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:29:01,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 741 transitions. [2023-08-03 19:29:01,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:29:01,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:29:01,298 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:29:01,298 INFO L175 Difference]: Start difference. First operand has 134 places, 150 transitions, 459 flow. Second operand 3 states and 741 transitions. [2023-08-03 19:29:01,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 157 transitions, 639 flow [2023-08-03 19:29:01,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 157 transitions, 632 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:29:01,356 INFO L231 Difference]: Finished difference. Result has 135 places, 151 transitions, 467 flow [2023-08-03 19:29:01,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=467, PETRI_PLACES=135, PETRI_TRANSITIONS=151} [2023-08-03 19:29:01,357 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 8 predicate places. [2023-08-03 19:29:01,357 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 151 transitions, 467 flow [2023-08-03 19:29:01,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:29:01,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:29:01,358 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:29:01,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 19:29:01,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:29:01,563 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:29:01,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:29:01,563 INFO L85 PathProgramCache]: Analyzing trace with hash -50125519, now seen corresponding path program 1 times [2023-08-03 19:29:01,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:29:01,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815819251] [2023-08-03 19:29:01,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:29:01,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:29:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:29:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:29:01,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:29:01,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815819251] [2023-08-03 19:29:01,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815819251] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:29:01,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938514750] [2023-08-03 19:29:01,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:29:01,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:29:01,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:29:01,645 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:29:01,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 19:29:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:29:01,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:29:01,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:29:01,740 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:29:01,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:29:01,756 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:29:01,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938514750] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:29:01,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:29:01,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:29:01,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731104638] [2023-08-03 19:29:01,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:29:01,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:29:01,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:29:01,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:29:01,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:29:01,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 439 [2023-08-03 19:29:01,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 151 transitions, 467 flow. Second operand has 5 states, 5 states have (on average 222.6) internal successors, (1113), 5 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:29:01,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:29:01,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 439 [2023-08-03 19:29:01,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:29:42,655 INFO L124 PetriNetUnfolderBase]: 295326/405103 cut-off events. [2023-08-03 19:29:42,655 INFO L125 PetriNetUnfolderBase]: For 79234/79234 co-relation queries the response was YES. [2023-08-03 19:29:47,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840905 conditions, 405103 events. 295326/405103 cut-off events. For 79234/79234 co-relation queries the response was YES. Maximal size of possible extension queue 6919. Compared 2851404 event pairs, 179226 based on Foata normal form. 8/376928 useless extension candidates. Maximal degree in co-relation 528144. Up to 381453 conditions per place. [2023-08-03 19:29:49,551 INFO L140 encePairwiseOnDemand]: 436/439 looper letters, 81 selfloop transitions, 3 changer transitions 0/158 dead transitions. [2023-08-03 19:29:49,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 158 transitions, 644 flow [2023-08-03 19:29:49,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:29:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:29:49,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 959 transitions. [2023-08-03 19:29:49,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461275626423691 [2023-08-03 19:29:49,554 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 959 transitions. [2023-08-03 19:29:49,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 959 transitions. [2023-08-03 19:29:49,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:29:49,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 959 transitions. [2023-08-03 19:29:49,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:29:49,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:29:49,559 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:29:49,559 INFO L175 Difference]: Start difference. First operand has 135 places, 151 transitions, 467 flow. Second operand 4 states and 959 transitions. [2023-08-03 19:29:49,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 158 transitions, 644 flow [2023-08-03 19:29:49,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 158 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:29:49,631 INFO L231 Difference]: Finished difference. Result has 137 places, 150 transitions, 462 flow [2023-08-03 19:29:49,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=462, PETRI_PLACES=137, PETRI_TRANSITIONS=150} [2023-08-03 19:29:49,632 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 10 predicate places. [2023-08-03 19:29:49,632 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 150 transitions, 462 flow [2023-08-03 19:29:49,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.6) internal successors, (1113), 5 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:29:49,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:29:49,632 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:29:49,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 19:29:49,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:29:49,838 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:29:49,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:29:49,838 INFO L85 PathProgramCache]: Analyzing trace with hash -216070789, now seen corresponding path program 1 times [2023-08-03 19:29:49,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:29:49,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562114592] [2023-08-03 19:29:49,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:29:49,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:29:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:29:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:29:49,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:29:49,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562114592] [2023-08-03 19:29:49,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562114592] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:29:49,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981183580] [2023-08-03 19:29:49,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:29:49,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:29:49,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:29:49,938 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:29:49,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 19:29:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:29:50,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:29:50,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:29:50,047 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:29:50,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:29:50,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981183580] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:29:50,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:29:50,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:29:50,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326380913] [2023-08-03 19:29:50,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:29:50,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:29:50,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:29:50,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:29:50,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:29:50,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 439 [2023-08-03 19:29:50,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 150 transitions, 462 flow. Second operand has 5 states, 5 states have (on average 222.6) internal successors, (1113), 5 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:29:50,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:29:50,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 439 [2023-08-03 19:29:50,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:30:29,716 INFO L124 PetriNetUnfolderBase]: 295134/404815 cut-off events. [2023-08-03 19:30:29,717 INFO L125 PetriNetUnfolderBase]: For 79166/79166 co-relation queries the response was YES. [2023-08-03 19:30:33,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840293 conditions, 404815 events. 295134/404815 cut-off events. For 79166/79166 co-relation queries the response was YES. Maximal size of possible extension queue 6919. Compared 2849073 event pairs, 63598 based on Foata normal form. 64/376696 useless extension candidates. Maximal degree in co-relation 527870. Up to 380484 conditions per place. [2023-08-03 19:30:36,405 INFO L140 encePairwiseOnDemand]: 435/439 looper letters, 89 selfloop transitions, 4 changer transitions 0/166 dead transitions. [2023-08-03 19:30:36,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 166 transitions, 678 flow [2023-08-03 19:30:36,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:30:36,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:30:36,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1187 transitions. [2023-08-03 19:30:36,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407744874715262 [2023-08-03 19:30:36,408 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1187 transitions. [2023-08-03 19:30:36,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1187 transitions. [2023-08-03 19:30:36,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:30:36,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1187 transitions. [2023-08-03 19:30:36,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 237.4) internal successors, (1187), 5 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:30:36,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 439.0) internal successors, (2634), 6 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:30:36,414 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 439.0) internal successors, (2634), 6 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:30:36,414 INFO L175 Difference]: Start difference. First operand has 137 places, 150 transitions, 462 flow. Second operand 5 states and 1187 transitions. [2023-08-03 19:30:36,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 166 transitions, 678 flow [2023-08-03 19:30:36,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 166 transitions, 662 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:30:36,486 INFO L231 Difference]: Finished difference. Result has 137 places, 150 transitions, 461 flow [2023-08-03 19:30:36,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=461, PETRI_PLACES=137, PETRI_TRANSITIONS=150} [2023-08-03 19:30:36,487 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 10 predicate places. [2023-08-03 19:30:36,487 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 150 transitions, 461 flow [2023-08-03 19:30:36,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.6) internal successors, (1113), 5 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:30:36,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:30:36,488 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:30:36,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-03 19:30:36,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:30:36,694 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:30:36,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:30:36,695 INFO L85 PathProgramCache]: Analyzing trace with hash -970498774, now seen corresponding path program 1 times [2023-08-03 19:30:36,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:30:36,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948349302] [2023-08-03 19:30:36,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:30:36,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:30:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:30:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:30:36,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:30:36,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948349302] [2023-08-03 19:30:36,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948349302] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:30:36,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018391185] [2023-08-03 19:30:36,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:30:36,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:30:36,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:30:36,754 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:30:36,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 19:30:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:30:36,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:30:36,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:30:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:30:36,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:30:36,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018391185] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:30:36,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:30:36,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:30:36,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772516491] [2023-08-03 19:30:36,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:30:36,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:30:36,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:30:36,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:30:36,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:30:36,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 439 [2023-08-03 19:30:36,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 150 transitions, 461 flow. Second operand has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:30:36,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:30:36,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 439 [2023-08-03 19:30:36,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:31:17,181 INFO L124 PetriNetUnfolderBase]: 295038/409783 cut-off events. [2023-08-03 19:31:17,182 INFO L125 PetriNetUnfolderBase]: For 46166/46166 co-relation queries the response was YES. [2023-08-03 19:31:21,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836710 conditions, 409783 events. 295038/409783 cut-off events. For 46166/46166 co-relation queries the response was YES. Maximal size of possible extension queue 7410. Compared 2967675 event pairs, 208050 based on Foata normal form. 0/382962 useless extension candidates. Maximal degree in co-relation 525592. Up to 379741 conditions per place. [2023-08-03 19:31:24,271 INFO L140 encePairwiseOnDemand]: 436/439 looper letters, 83 selfloop transitions, 3 changer transitions 0/159 dead transitions. [2023-08-03 19:31:24,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 159 transitions, 651 flow [2023-08-03 19:31:24,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:31:24,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:31:24,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 743 transitions. [2023-08-03 19:31:24,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5641609719058466 [2023-08-03 19:31:24,273 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 743 transitions. [2023-08-03 19:31:24,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 743 transitions. [2023-08-03 19:31:24,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:31:24,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 743 transitions. [2023-08-03 19:31:24,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:31:24,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:31:24,276 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:31:24,276 INFO L175 Difference]: Start difference. First operand has 137 places, 150 transitions, 461 flow. Second operand 3 states and 743 transitions. [2023-08-03 19:31:24,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 159 transitions, 651 flow [2023-08-03 19:31:24,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 159 transitions, 644 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:31:24,308 INFO L231 Difference]: Finished difference. Result has 138 places, 151 transitions, 469 flow [2023-08-03 19:31:24,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=469, PETRI_PLACES=138, PETRI_TRANSITIONS=151} [2023-08-03 19:31:24,309 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 11 predicate places. [2023-08-03 19:31:24,309 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 151 transitions, 469 flow [2023-08-03 19:31:24,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:31:24,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:31:24,310 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:31:24,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-03 19:31:24,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-03 19:31:24,510 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:31:24,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:31:24,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1979336758, now seen corresponding path program 1 times [2023-08-03 19:31:24,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:31:24,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076879681] [2023-08-03 19:31:24,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:31:24,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:31:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:31:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:31:24,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:31:24,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076879681] [2023-08-03 19:31:24,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076879681] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:31:24,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829189817] [2023-08-03 19:31:24,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:31:24,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:31:24,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:31:24,559 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:31:24,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 19:31:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:31:24,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:31:24,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:31:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:31:24,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:31:24,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829189817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:31:24,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:31:24,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:31:24,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524099782] [2023-08-03 19:31:24,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:31:24,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:31:24,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:31:24,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:31:24,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:31:24,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 439 [2023-08-03 19:31:24,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 151 transitions, 469 flow. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:31:24,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:31:24,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 439 [2023-08-03 19:31:24,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:32:04,174 INFO L124 PetriNetUnfolderBase]: 279966/389463 cut-off events. [2023-08-03 19:32:04,175 INFO L125 PetriNetUnfolderBase]: For 45078/45078 co-relation queries the response was YES. [2023-08-03 19:32:08,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798231 conditions, 389463 events. 279966/389463 cut-off events. For 45078/45078 co-relation queries the response was YES. Maximal size of possible extension queue 8743. Compared 2825656 event pairs, 210016 based on Foata normal form. 0/364242 useless extension candidates. Maximal degree in co-relation 506288. Up to 348893 conditions per place. [2023-08-03 19:32:10,574 INFO L140 encePairwiseOnDemand]: 436/439 looper letters, 94 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2023-08-03 19:32:10,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 169 transitions, 715 flow [2023-08-03 19:32:10,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:32:10,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:32:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 752 transitions. [2023-08-03 19:32:10,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5709946848899012 [2023-08-03 19:32:10,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 752 transitions. [2023-08-03 19:32:10,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 752 transitions. [2023-08-03 19:32:10,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:32:10,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 752 transitions. [2023-08-03 19:32:10,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:32:10,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:32:10,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:32:10,581 INFO L175 Difference]: Start difference. First operand has 138 places, 151 transitions, 469 flow. Second operand 3 states and 752 transitions. [2023-08-03 19:32:10,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 169 transitions, 715 flow [2023-08-03 19:32:10,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 169 transitions, 712 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:32:10,637 INFO L231 Difference]: Finished difference. Result has 140 places, 152 transitions, 478 flow [2023-08-03 19:32:10,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=478, PETRI_PLACES=140, PETRI_TRANSITIONS=152} [2023-08-03 19:32:10,637 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 13 predicate places. [2023-08-03 19:32:10,637 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 152 transitions, 478 flow [2023-08-03 19:32:10,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:32:10,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:32:10,638 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:32:10,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 19:32:10,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:32:10,839 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:32:10,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:32:10,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1969689580, now seen corresponding path program 1 times [2023-08-03 19:32:10,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:32:10,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976789281] [2023-08-03 19:32:10,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:32:10,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:32:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:32:10,886 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:32:10,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:32:10,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976789281] [2023-08-03 19:32:10,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976789281] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:32:10,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784779142] [2023-08-03 19:32:10,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:32:10,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:32:10,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:32:10,889 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:32:10,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 19:32:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:32:10,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:32:10,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:32:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:32:11,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:32:11,015 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:32:11,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784779142] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:32:11,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:32:11,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:32:11,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268887257] [2023-08-03 19:32:11,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:32:11,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:32:11,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:32:11,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:32:11,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:32:11,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 439 [2023-08-03 19:32:11,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 152 transitions, 478 flow. Second operand has 5 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:32:11,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:32:11,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 439 [2023-08-03 19:32:11,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:32:50,009 INFO L124 PetriNetUnfolderBase]: 274334/380823 cut-off events. [2023-08-03 19:32:50,009 INFO L125 PetriNetUnfolderBase]: For 52199/52199 co-relation queries the response was YES. [2023-08-03 19:32:54,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795866 conditions, 380823 events. 274334/380823 cut-off events. For 52199/52199 co-relation queries the response was YES. Maximal size of possible extension queue 8161. Compared 2740391 event pairs, 168814 based on Foata normal form. 32/361939 useless extension candidates. Maximal degree in co-relation 507612. Up to 355165 conditions per place. [2023-08-03 19:32:56,253 INFO L140 encePairwiseOnDemand]: 436/439 looper letters, 87 selfloop transitions, 3 changer transitions 0/163 dead transitions. [2023-08-03 19:32:56,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 163 transitions, 676 flow [2023-08-03 19:32:56,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:32:56,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:32:56,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 963 transitions. [2023-08-03 19:32:56,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484054669703873 [2023-08-03 19:32:56,256 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 963 transitions. [2023-08-03 19:32:56,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 963 transitions. [2023-08-03 19:32:56,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:32:56,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 963 transitions. [2023-08-03 19:32:56,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 240.75) internal successors, (963), 4 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:32:56,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:32:56,261 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:32:56,261 INFO L175 Difference]: Start difference. First operand has 140 places, 152 transitions, 478 flow. Second operand 4 states and 963 transitions. [2023-08-03 19:32:56,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 163 transitions, 676 flow [2023-08-03 19:32:56,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 163 transitions, 674 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:32:56,346 INFO L231 Difference]: Finished difference. Result has 142 places, 151 transitions, 474 flow [2023-08-03 19:32:56,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=474, PETRI_PLACES=142, PETRI_TRANSITIONS=151} [2023-08-03 19:32:56,347 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 15 predicate places. [2023-08-03 19:32:56,347 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 151 transitions, 474 flow [2023-08-03 19:32:56,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:32:56,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:32:56,348 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:32:56,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 19:32:56,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-03 19:32:56,553 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:32:56,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:32:56,553 INFO L85 PathProgramCache]: Analyzing trace with hash 234169332, now seen corresponding path program 1 times [2023-08-03 19:32:56,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:32:56,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703485224] [2023-08-03 19:32:56,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:32:56,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:32:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:32:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:32:56,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:32:56,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703485224] [2023-08-03 19:32:56,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703485224] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:32:56,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62904993] [2023-08-03 19:32:56,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:32:56,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:32:56,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:32:56,617 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:32:56,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 19:32:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:32:56,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:32:56,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:32:56,754 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 19:32:56,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:32:56,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62904993] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:32:56,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:32:56,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:32:56,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716298281] [2023-08-03 19:32:56,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:32:56,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:32:56,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:32:56,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:32:56,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:32:56,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 439 [2023-08-03 19:32:56,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 151 transitions, 474 flow. Second operand has 5 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:32:56,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:32:56,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 439 [2023-08-03 19:32:56,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:33:31,902 INFO L124 PetriNetUnfolderBase]: 273310/379415 cut-off events. [2023-08-03 19:33:31,902 INFO L125 PetriNetUnfolderBase]: For 50391/50391 co-relation queries the response was YES. Received shutdown request... [2023-08-03 19:33:33,196 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 19:33:33,205 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 19:33:34,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 [2023-08-03 19:33:34,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-03 19:33:36,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 791562 conditions, 379415 events. 273310/379415 cut-off events. For 50391/50391 co-relation queries the response was YES. Maximal size of possible extension queue 8161. Compared 2730144 event pairs, 10324 based on Foata normal form. 256/360755 useless extension candidates. Maximal degree in co-relation 505492. Up to 350116 conditions per place. Cannot interrupt operation gracefully because timeout expired. Forcing shutdown