/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/added_bound_to_unbounded/goblint-regression_28-race_reach_02-simple_racefree_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:16:53,802 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:16:53,865 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:16:53,869 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:16:53,869 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:16:53,870 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:16:53,870 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:16:53,894 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:16:53,894 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:16:53,897 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:16:53,898 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:16:53,898 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:16:53,899 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:16:53,900 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:16:53,900 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:16:53,900 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:16:53,900 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:16:53,900 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:16:53,900 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:16:53,900 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:16:53,901 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:16:53,901 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:16:53,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:16:53,901 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:16:53,902 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:16:53,902 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:16:53,902 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:16:53,903 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:16:53,903 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:16:53,903 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:16:53,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:16:53,904 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:16:53,904 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:16:53,904 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:16:53,904 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:16:53,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:16:53,904 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:16:53,905 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:16:53,905 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:16:53,905 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:16:53,905 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:16:53,905 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:16:54,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:16:54,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:16:54,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:16:54,137 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:16:54,137 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:16:54,137 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_02-simple_racefree_bound2.i [2023-08-03 15:16:55,127 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:16:55,286 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:16:55,287 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_02-simple_racefree_bound2.i [2023-08-03 15:16:55,294 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee0b7e68f/69f05c56f0c2425db995107029804df4/FLAG24564dd2f [2023-08-03 15:16:55,304 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee0b7e68f/69f05c56f0c2425db995107029804df4 [2023-08-03 15:16:55,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:16:55,306 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:16:55,307 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:16:55,307 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:16:55,309 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:16:55,309 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:16:55" (1/1) ... [2023-08-03 15:16:55,310 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@148e4def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:16:55, skipping insertion in model container [2023-08-03 15:16:55,310 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:16:55" (1/1) ... [2023-08-03 15:16:55,334 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:16:55,535 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_02-simple_racefree_bound2.i[30176,30189] [2023-08-03 15:16:55,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:16:55,555 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:16:55,575 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 15:16:55,576 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 15:16:55,587 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_02-simple_racefree_bound2.i[30176,30189] [2023-08-03 15:16:55,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:16:55,625 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:16:55,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:16:55 WrapperNode [2023-08-03 15:16:55,626 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:16:55,627 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:16:55,627 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:16:55,627 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:16:55,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:16:55" (1/1) ... [2023-08-03 15:16:55,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:16:55" (1/1) ... [2023-08-03 15:16:55,670 INFO L138 Inliner]: procedures = 170, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2023-08-03 15:16:55,670 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:16:55,671 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:16:55,671 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:16:55,671 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:16:55,676 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:16:55" (1/1) ... [2023-08-03 15:16:55,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:16:55" (1/1) ... [2023-08-03 15:16:55,682 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:16:55" (1/1) ... [2023-08-03 15:16:55,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:16:55" (1/1) ... [2023-08-03 15:16:55,694 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:16:55" (1/1) ... [2023-08-03 15:16:55,696 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:16:55" (1/1) ... [2023-08-03 15:16:55,697 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:16:55" (1/1) ... [2023-08-03 15:16:55,698 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:16:55" (1/1) ... [2023-08-03 15:16:55,699 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:16:55,699 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:16:55,699 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:16:55,699 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:16:55,700 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:16:55" (1/1) ... [2023-08-03 15:16:55,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:16:55,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:16:55,724 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 15:16:55,729 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 15:16:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 15:16:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:16:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 15:16:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:16:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:16:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 15:16:55,753 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 15:16:55,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:16:55,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:16:55,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:16:55,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:16:55,754 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 15:16:55,846 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:16:55,847 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:16:56,014 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:16:56,020 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:16:56,020 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-03 15:16:56,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:16:56 BoogieIcfgContainer [2023-08-03 15:16:56,021 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:16:56,022 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:16:56,022 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:16:56,040 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:16:56,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:16:55" (1/3) ... [2023-08-03 15:16:56,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8b3a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:16:56, skipping insertion in model container [2023-08-03 15:16:56,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:16:55" (2/3) ... [2023-08-03 15:16:56,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8b3a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:16:56, skipping insertion in model container [2023-08-03 15:16:56,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:16:56" (3/3) ... [2023-08-03 15:16:56,042 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_02-simple_racefree_bound2.i [2023-08-03 15:16:56,049 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:16:56,056 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:16:56,056 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 15:16:56,056 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:16:56,110 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 15:16:56,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 108 transitions, 224 flow [2023-08-03 15:16:56,178 INFO L124 PetriNetUnfolderBase]: 17/141 cut-off events. [2023-08-03 15:16:56,179 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 15:16:56,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 141 events. 17/141 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 302 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2023-08-03 15:16:56,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 108 transitions, 224 flow [2023-08-03 15:16:56,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 103 transitions, 211 flow [2023-08-03 15:16:56,192 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:16:56,205 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 103 transitions, 211 flow [2023-08-03 15:16:56,211 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 103 transitions, 211 flow [2023-08-03 15:16:56,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 103 transitions, 211 flow [2023-08-03 15:16:56,239 INFO L124 PetriNetUnfolderBase]: 16/136 cut-off events. [2023-08-03 15:16:56,239 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:16:56,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 136 events. 16/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 287 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2023-08-03 15:16:56,248 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-08-03 15:16:58,091 INFO L134 LiptonReduction]: Checked pairs total: 3620 [2023-08-03 15:16:58,091 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-08-03 15:16:58,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:16:58,117 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;@3d0068e6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:16:58,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 15:16:58,120 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:16:58,120 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2023-08-03 15:16:58,120 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:16:58,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:16:58,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 15:16:58,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:16:58,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:16:58,125 INFO L85 PathProgramCache]: Analyzing trace with hash 12787872, now seen corresponding path program 1 times [2023-08-03 15:16:58,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:16:58,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510697946] [2023-08-03 15:16:58,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:16:58,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:16:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:16:58,347 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 15:16:58,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:16:58,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510697946] [2023-08-03 15:16:58,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510697946] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:16:58,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:16:58,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:16:58,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728141454] [2023-08-03 15:16:58,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:16:58,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:16:58,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:16:58,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:16:58,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:16:58,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 196 [2023-08-03 15:16:58,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 30 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:16:58,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:16:58,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 196 [2023-08-03 15:16:58,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:16:58,465 INFO L124 PetriNetUnfolderBase]: 72/174 cut-off events. [2023-08-03 15:16:58,465 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:16:58,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 174 events. 72/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 687 event pairs, 0 based on Foata normal form. 10/166 useless extension candidates. Maximal degree in co-relation 323. Up to 154 conditions per place. [2023-08-03 15:16:58,467 INFO L140 encePairwiseOnDemand]: 184/196 looper letters, 22 selfloop transitions, 2 changer transitions 4/30 dead transitions. [2023-08-03 15:16:58,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 30 transitions, 121 flow [2023-08-03 15:16:58,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:16:58,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:16:58,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2023-08-03 15:16:58,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340136054421769 [2023-08-03 15:16:58,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2023-08-03 15:16:58,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2023-08-03 15:16:58,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:16:58,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2023-08-03 15:16:58,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:16:58,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:16:58,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:16:58,499 INFO L175 Difference]: Start difference. First operand has 25 places, 30 transitions, 65 flow. Second operand 3 states and 314 transitions. [2023-08-03 15:16:58,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 30 transitions, 121 flow [2023-08-03 15:16:58,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 121 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:16:58,503 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 47 flow [2023-08-03 15:16:58,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-08-03 15:16:58,507 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-08-03 15:16:58,508 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 47 flow [2023-08-03 15:16:58,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:16:58,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:16:58,508 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:16:58,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:16:58,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:16:58,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:16:58,510 INFO L85 PathProgramCache]: Analyzing trace with hash -601168239, now seen corresponding path program 1 times [2023-08-03 15:16:58,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:16:58,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434204662] [2023-08-03 15:16:58,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:16:58,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:16:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:16:58,543 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:16:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:16:58,594 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:16:58,594 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:16:58,595 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 15:16:58,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-03 15:16:58,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:16:58,597 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 15:16:58,599 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:16:58,600 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:16:58,621 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 15:16:58,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 138 transitions, 294 flow [2023-08-03 15:16:58,657 INFO L124 PetriNetUnfolderBase]: 31/228 cut-off events. [2023-08-03 15:16:58,657 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 15:16:58,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 228 events. 31/228 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 596 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 143. Up to 8 conditions per place. [2023-08-03 15:16:58,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 138 transitions, 294 flow [2023-08-03 15:16:58,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 138 transitions, 294 flow [2023-08-03 15:16:58,663 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:16:58,663 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 138 transitions, 294 flow [2023-08-03 15:16:58,663 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 138 transitions, 294 flow [2023-08-03 15:16:58,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 138 transitions, 294 flow [2023-08-03 15:16:58,684 INFO L124 PetriNetUnfolderBase]: 31/228 cut-off events. [2023-08-03 15:16:58,685 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 15:16:58,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 228 events. 31/228 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 596 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 143. Up to 8 conditions per place. [2023-08-03 15:16:58,690 INFO L119 LiptonReduction]: Number of co-enabled transitions 6552 [2023-08-03 15:17:00,836 INFO L134 LiptonReduction]: Checked pairs total: 17421 [2023-08-03 15:17:00,837 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-03 15:17:00,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:17:00,839 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;@3d0068e6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:17:00,839 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 15:17:00,840 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:17:00,840 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2023-08-03 15:17:00,840 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:17:00,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:00,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 15:17:00,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:17:00,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:00,841 INFO L85 PathProgramCache]: Analyzing trace with hash 20949202, now seen corresponding path program 1 times [2023-08-03 15:17:00,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:00,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14537336] [2023-08-03 15:17:00,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:00,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:00,883 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 15:17:00,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:00,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14537336] [2023-08-03 15:17:00,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14537336] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:17:00,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:17:00,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:17:00,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775241631] [2023-08-03 15:17:00,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:17:00,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:17:00,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:00,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:17:00,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:17:00,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 235 [2023-08-03 15:17:00,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 57 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:00,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:00,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 235 [2023-08-03 15:17:00,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:17:01,056 INFO L124 PetriNetUnfolderBase]: 1376/2456 cut-off events. [2023-08-03 15:17:01,057 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-03 15:17:01,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4780 conditions, 2456 events. 1376/2456 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 14736 event pairs, 648 based on Foata normal form. 555/2693 useless extension candidates. Maximal degree in co-relation 639. Up to 2257 conditions per place. [2023-08-03 15:17:01,063 INFO L140 encePairwiseOnDemand]: 217/235 looper letters, 28 selfloop transitions, 2 changer transitions 10/50 dead transitions. [2023-08-03 15:17:01,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 50 transitions, 196 flow [2023-08-03 15:17:01,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:17:01,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:17:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 397 transitions. [2023-08-03 15:17:01,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5631205673758866 [2023-08-03 15:17:01,065 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 397 transitions. [2023-08-03 15:17:01,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 397 transitions. [2023-08-03 15:17:01,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:17:01,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 397 transitions. [2023-08-03 15:17:01,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:01,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:01,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:01,067 INFO L175 Difference]: Start difference. First operand has 45 places, 57 transitions, 132 flow. Second operand 3 states and 397 transitions. [2023-08-03 15:17:01,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 50 transitions, 196 flow [2023-08-03 15:17:01,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 50 transitions, 196 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:17:01,069 INFO L231 Difference]: Finished difference. Result has 48 places, 33 transitions, 88 flow [2023-08-03 15:17:01,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=48, PETRI_TRANSITIONS=33} [2023-08-03 15:17:01,070 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2023-08-03 15:17:01,070 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 33 transitions, 88 flow [2023-08-03 15:17:01,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:01,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:01,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:17:01,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 15:17:01,071 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:17:01,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:01,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1477495966, now seen corresponding path program 1 times [2023-08-03 15:17:01,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:01,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578075588] [2023-08-03 15:17:01,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:01,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:01,101 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 15:17:01,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:01,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578075588] [2023-08-03 15:17:01,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578075588] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:17:01,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579514987] [2023-08-03 15:17:01,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:01,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:17:01,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:17:01,104 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 15:17:01,145 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 15:17:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:01,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 15:17:01,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:17:01,203 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 15:17:01,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:17:01,223 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 15:17:01,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579514987] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:17:01,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:17:01,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 15:17:01,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959318972] [2023-08-03 15:17:01,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:17:01,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:17:01,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:01,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:17:01,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:17:01,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 235 [2023-08-03 15:17:01,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 33 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:01,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:01,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 235 [2023-08-03 15:17:01,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:17:01,334 INFO L124 PetriNetUnfolderBase]: 616/1108 cut-off events. [2023-08-03 15:17:01,334 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-08-03 15:17:01,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2311 conditions, 1108 events. 616/1108 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5746 event pairs, 249 based on Foata normal form. 7/1110 useless extension candidates. Maximal degree in co-relation 1912. Up to 693 conditions per place. [2023-08-03 15:17:01,339 INFO L140 encePairwiseOnDemand]: 231/235 looper letters, 41 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2023-08-03 15:17:01,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 222 flow [2023-08-03 15:17:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 15:17:01,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 15:17:01,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 490 transitions. [2023-08-03 15:17:01,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2023-08-03 15:17:01,340 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 490 transitions. [2023-08-03 15:17:01,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 490 transitions. [2023-08-03 15:17:01,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:17:01,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 490 transitions. [2023-08-03 15:17:01,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:01,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 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 15:17:01,343 INFO L81 ComplementDD]: Finished complementDD. Result has 5 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 15:17:01,344 INFO L175 Difference]: Start difference. First operand has 48 places, 33 transitions, 88 flow. Second operand 4 states and 490 transitions. [2023-08-03 15:17:01,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 222 flow [2023-08-03 15:17:01,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 218 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 15:17:01,345 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 104 flow [2023-08-03 15:17:01,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-08-03 15:17:01,346 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -1 predicate places. [2023-08-03 15:17:01,346 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 104 flow [2023-08-03 15:17:01,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:01,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:01,346 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 15:17:01,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 15:17:01,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:17:01,548 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:17:01,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:01,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1661799328, now seen corresponding path program 1 times [2023-08-03 15:17:01,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:01,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190997139] [2023-08-03 15:17:01,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:01,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:01,608 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 15:17:01,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:01,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190997139] [2023-08-03 15:17:01,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190997139] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:17:01,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960492140] [2023-08-03 15:17:01,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:01,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:17:01,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:17:01,610 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 15:17:01,612 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 15:17:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:01,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 15:17:01,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:17:01,680 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 15:17:01,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:17:01,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960492140] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:17:01,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:17:01,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 15:17:01,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784855884] [2023-08-03 15:17:01,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:17:01,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:17:01,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:01,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:17:01,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:17:01,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 235 [2023-08-03 15:17:01,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 112.6) internal successors, (563), 5 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:01,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:01,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 235 [2023-08-03 15:17:01,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:17:01,803 INFO L124 PetriNetUnfolderBase]: 506/879 cut-off events. [2023-08-03 15:17:01,803 INFO L125 PetriNetUnfolderBase]: For 438/438 co-relation queries the response was YES. [2023-08-03 15:17:01,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2093 conditions, 879 events. 506/879 cut-off events. For 438/438 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4509 event pairs, 50 based on Foata normal form. 63/939 useless extension candidates. Maximal degree in co-relation 1070. Up to 692 conditions per place. [2023-08-03 15:17:01,806 INFO L140 encePairwiseOnDemand]: 232/235 looper letters, 41 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-08-03 15:17:01,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 226 flow [2023-08-03 15:17:01,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:17:01,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:17:01,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 600 transitions. [2023-08-03 15:17:01,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2023-08-03 15:17:01,808 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 600 transitions. [2023-08-03 15:17:01,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 600 transitions. [2023-08-03 15:17:01,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:17:01,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 600 transitions. [2023-08-03 15:17:01,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:01,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:01,811 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:01,811 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 104 flow. Second operand 5 states and 600 transitions. [2023-08-03 15:17:01,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 226 flow [2023-08-03 15:17:01,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 219 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 15:17:01,823 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 93 flow [2023-08-03 15:17:01,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=93, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-08-03 15:17:01,823 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -1 predicate places. [2023-08-03 15:17:01,823 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 93 flow [2023-08-03 15:17:01,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.6) internal successors, (563), 5 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:01,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:01,824 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 15:17:01,830 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 15:17:02,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:17:02,028 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:17:02,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:02,029 INFO L85 PathProgramCache]: Analyzing trace with hash 23842449, now seen corresponding path program 1 times [2023-08-03 15:17:02,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:02,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145078565] [2023-08-03 15:17:02,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:02,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:02,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 15:17:02,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:02,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145078565] [2023-08-03 15:17:02,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145078565] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:17:02,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:17:02,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:17:02,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173901473] [2023-08-03 15:17:02,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:17:02,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:17:02,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:02,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:17:02,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:17:02,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 235 [2023-08-03 15:17:02,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:02,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:02,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 235 [2023-08-03 15:17:02,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:17:02,166 INFO L124 PetriNetUnfolderBase]: 646/1150 cut-off events. [2023-08-03 15:17:02,166 INFO L125 PetriNetUnfolderBase]: For 790/790 co-relation queries the response was YES. [2023-08-03 15:17:02,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2620 conditions, 1150 events. 646/1150 cut-off events. For 790/790 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 5610 event pairs, 262 based on Foata normal form. 9/1152 useless extension candidates. Maximal degree in co-relation 1889. Up to 979 conditions per place. [2023-08-03 15:17:02,170 INFO L140 encePairwiseOnDemand]: 231/235 looper letters, 34 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-08-03 15:17:02,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 212 flow [2023-08-03 15:17:02,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:17:02,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:17:02,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-08-03 15:17:02,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2023-08-03 15:17:02,171 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-08-03 15:17:02,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-08-03 15:17:02,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:17:02,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-08-03 15:17:02,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:02,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:02,174 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:02,174 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 93 flow. Second operand 3 states and 369 transitions. [2023-08-03 15:17:02,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 212 flow [2023-08-03 15:17:02,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 204 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 15:17:02,175 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 107 flow [2023-08-03 15:17:02,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-08-03 15:17:02,176 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -1 predicate places. [2023-08-03 15:17:02,176 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 107 flow [2023-08-03 15:17:02,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:02,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:02,176 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:17:02,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 15:17:02,177 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:17:02,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:02,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1496538527, now seen corresponding path program 1 times [2023-08-03 15:17:02,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:02,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194252666] [2023-08-03 15:17:02,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:02,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:02,261 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:17:02,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:02,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194252666] [2023-08-03 15:17:02,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194252666] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:17:02,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:17:02,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:17:02,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692895331] [2023-08-03 15:17:02,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:17:02,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:17:02,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:02,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:17:02,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:17:02,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 235 [2023-08-03 15:17:02,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:02,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:02,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 235 [2023-08-03 15:17:02,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:17:02,346 INFO L124 PetriNetUnfolderBase]: 47/187 cut-off events. [2023-08-03 15:17:02,346 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2023-08-03 15:17:02,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 187 events. 47/187 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 670 event pairs, 6 based on Foata normal form. 58/245 useless extension candidates. Maximal degree in co-relation 364. Up to 113 conditions per place. [2023-08-03 15:17:02,347 INFO L140 encePairwiseOnDemand]: 229/235 looper letters, 22 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2023-08-03 15:17:02,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 185 flow [2023-08-03 15:17:02,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 15:17:02,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 15:17:02,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 460 transitions. [2023-08-03 15:17:02,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2023-08-03 15:17:02,351 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 460 transitions. [2023-08-03 15:17:02,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 460 transitions. [2023-08-03 15:17:02,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:17:02,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 460 transitions. [2023-08-03 15:17:02,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:02,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 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 15:17:02,353 INFO L81 ComplementDD]: Finished complementDD. Result has 5 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 15:17:02,353 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 107 flow. Second operand 4 states and 460 transitions. [2023-08-03 15:17:02,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 185 flow [2023-08-03 15:17:02,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 38 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:17:02,354 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 116 flow [2023-08-03 15:17:02,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2023-08-03 15:17:02,355 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 1 predicate places. [2023-08-03 15:17:02,355 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 116 flow [2023-08-03 15:17:02,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:02,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:02,355 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:17:02,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 15:17:02,355 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:17:02,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:02,356 INFO L85 PathProgramCache]: Analyzing trace with hash -968247708, now seen corresponding path program 1 times [2023-08-03 15:17:02,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:02,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951537071] [2023-08-03 15:17:02,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:02,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 15:17:02,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:02,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951537071] [2023-08-03 15:17:02,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951537071] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:17:02,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:17:02,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:17:02,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458121642] [2023-08-03 15:17:02,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:17:02,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:17:02,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:02,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:17:02,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:17:02,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 235 [2023-08-03 15:17:02,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 109.83333333333333) internal successors, (659), 6 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:02,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:02,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 235 [2023-08-03 15:17:02,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:17:02,599 INFO L124 PetriNetUnfolderBase]: 62/198 cut-off events. [2023-08-03 15:17:02,599 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2023-08-03 15:17:02,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 198 events. 62/198 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 683 event pairs, 16 based on Foata normal form. 1/198 useless extension candidates. Maximal degree in co-relation 441. Up to 69 conditions per place. [2023-08-03 15:17:02,600 INFO L140 encePairwiseOnDemand]: 226/235 looper letters, 48 selfloop transitions, 9 changer transitions 2/65 dead transitions. [2023-08-03 15:17:02,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 65 transitions, 380 flow [2023-08-03 15:17:02,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 15:17:02,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 15:17:02,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 909 transitions. [2023-08-03 15:17:02,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48351063829787233 [2023-08-03 15:17:02,602 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 909 transitions. [2023-08-03 15:17:02,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 909 transitions. [2023-08-03 15:17:02,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:17:02,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 909 transitions. [2023-08-03 15:17:02,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.625) internal successors, (909), 8 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:02,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:02,606 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:02,606 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 116 flow. Second operand 8 states and 909 transitions. [2023-08-03 15:17:02,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 65 transitions, 380 flow [2023-08-03 15:17:02,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 65 transitions, 371 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:17:02,607 INFO L231 Difference]: Finished difference. Result has 56 places, 39 transitions, 163 flow [2023-08-03 15:17:02,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=163, PETRI_PLACES=56, PETRI_TRANSITIONS=39} [2023-08-03 15:17:02,608 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 11 predicate places. [2023-08-03 15:17:02,608 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 39 transitions, 163 flow [2023-08-03 15:17:02,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.83333333333333) internal successors, (659), 6 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:02,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:02,608 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:17:02,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 15:17:02,608 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:17:02,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:02,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1193472421, now seen corresponding path program 1 times [2023-08-03 15:17:02,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:02,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465083575] [2023-08-03 15:17:02,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:02,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:02,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 15:17:02,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:02,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465083575] [2023-08-03 15:17:02,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465083575] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:17:02,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:17:02,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:17:02,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936859282] [2023-08-03 15:17:02,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:17:02,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:17:02,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:02,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:17:02,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:17:02,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 235 [2023-08-03 15:17:02,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 39 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:02,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:02,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 235 [2023-08-03 15:17:02,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:17:02,787 INFO L124 PetriNetUnfolderBase]: 57/192 cut-off events. [2023-08-03 15:17:02,787 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2023-08-03 15:17:02,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 192 events. 57/192 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 662 event pairs, 14 based on Foata normal form. 1/192 useless extension candidates. Maximal degree in co-relation 471. Up to 101 conditions per place. [2023-08-03 15:17:02,788 INFO L140 encePairwiseOnDemand]: 228/235 looper letters, 38 selfloop transitions, 7 changer transitions 2/55 dead transitions. [2023-08-03 15:17:02,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 322 flow [2023-08-03 15:17:02,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:17:02,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:17:02,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 683 transitions. [2023-08-03 15:17:02,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48439716312056735 [2023-08-03 15:17:02,789 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 683 transitions. [2023-08-03 15:17:02,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 683 transitions. [2023-08-03 15:17:02,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:17:02,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 683 transitions. [2023-08-03 15:17:02,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.83333333333333) internal successors, (683), 6 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 15:17:02,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:02,792 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:02,792 INFO L175 Difference]: Start difference. First operand has 56 places, 39 transitions, 163 flow. Second operand 6 states and 683 transitions. [2023-08-03 15:17:02,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 322 flow [2023-08-03 15:17:02,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 55 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:17:02,794 INFO L231 Difference]: Finished difference. Result has 63 places, 42 transitions, 197 flow [2023-08-03 15:17:02,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=63, PETRI_TRANSITIONS=42} [2023-08-03 15:17:02,794 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 18 predicate places. [2023-08-03 15:17:02,795 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 42 transitions, 197 flow [2023-08-03 15:17:02,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:02,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:02,795 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:17:02,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 15:17:02,795 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:17:02,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:02,795 INFO L85 PathProgramCache]: Analyzing trace with hash -310904470, now seen corresponding path program 1 times [2023-08-03 15:17:02,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:02,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976054448] [2023-08-03 15:17:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:02,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:02,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 15:17:02,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:02,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976054448] [2023-08-03 15:17:02,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976054448] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:17:02,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195427512] [2023-08-03 15:17:02,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:02,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:17:02,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:17:02,953 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 15:17:02,975 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 15:17:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:03,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-03 15:17:03,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:17:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 15:17:03,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:17:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 15:17:03,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195427512] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:17:03,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:17:03,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2023-08-03 15:17:03,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806207557] [2023-08-03 15:17:03,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:17:03,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 15:17:03,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:03,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 15:17:03,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-08-03 15:17:03,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2023-08-03 15:17:03,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 42 transitions, 197 flow. Second operand has 8 states, 8 states have (on average 106.25) internal successors, (850), 8 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:03,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:03,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2023-08-03 15:17:03,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:17:03,361 INFO L124 PetriNetUnfolderBase]: 62/196 cut-off events. [2023-08-03 15:17:03,361 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2023-08-03 15:17:03,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 196 events. 62/196 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 678 event pairs, 22 based on Foata normal form. 1/196 useless extension candidates. Maximal degree in co-relation 521. Up to 74 conditions per place. [2023-08-03 15:17:03,362 INFO L140 encePairwiseOnDemand]: 223/235 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2023-08-03 15:17:03,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 63 transitions, 425 flow [2023-08-03 15:17:03,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-03 15:17:03,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-03 15:17:03,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1072 transitions. [2023-08-03 15:17:03,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45617021276595743 [2023-08-03 15:17:03,364 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1072 transitions. [2023-08-03 15:17:03,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1072 transitions. [2023-08-03 15:17:03,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:17:03,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1072 transitions. [2023-08-03 15:17:03,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 107.2) internal successors, (1072), 10 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:03,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 235.0) internal successors, (2585), 11 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:03,368 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 235.0) internal successors, (2585), 11 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:03,369 INFO L175 Difference]: Start difference. First operand has 63 places, 42 transitions, 197 flow. Second operand 10 states and 1072 transitions. [2023-08-03 15:17:03,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 63 transitions, 425 flow [2023-08-03 15:17:03,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 419 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:17:03,370 INFO L231 Difference]: Finished difference. Result has 69 places, 0 transitions, 0 flow [2023-08-03 15:17:03,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=69, PETRI_TRANSITIONS=0} [2023-08-03 15:17:03,370 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 24 predicate places. [2023-08-03 15:17:03,370 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 0 transitions, 0 flow [2023-08-03 15:17:03,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 106.25) internal successors, (850), 8 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:17:03,371 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-03 15:17:03,371 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 15:17:03,377 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 15:17:03,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:17:03,575 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:17:03,577 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:17:03,577 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:17:03,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:17:03 BasicIcfg [2023-08-03 15:17:03,579 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:17:03,579 INFO L158 Benchmark]: Toolchain (without parser) took 8273.25ms. Allocated memory was 371.2MB in the beginning and 446.7MB in the end (delta: 75.5MB). Free memory was 328.9MB in the beginning and 325.9MB in the end (delta: 3.0MB). Peak memory consumption was 81.4MB. Max. memory is 16.0GB. [2023-08-03 15:17:03,580 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 308.3MB. Free memory is still 265.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:17:03,580 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.05ms. Allocated memory is still 371.2MB. Free memory was 328.9MB in the beginning and 309.2MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 15:17:03,580 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.04ms. Allocated memory is still 371.2MB. Free memory was 309.2MB in the beginning and 307.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:17:03,580 INFO L158 Benchmark]: Boogie Preprocessor took 27.99ms. Allocated memory is still 371.2MB. Free memory was 307.1MB in the beginning and 305.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:17:03,580 INFO L158 Benchmark]: RCFGBuilder took 321.70ms. Allocated memory is still 371.2MB. Free memory was 305.0MB in the beginning and 290.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 15:17:03,580 INFO L158 Benchmark]: TraceAbstraction took 7556.81ms. Allocated memory was 371.2MB in the beginning and 446.7MB in the end (delta: 75.5MB). Free memory was 289.9MB in the beginning and 325.9MB in the end (delta: -36.0MB). Peak memory consumption was 43.7MB. Max. memory is 16.0GB. [2023-08-03 15:17:03,581 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 308.3MB. Free memory is still 265.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 319.05ms. Allocated memory is still 371.2MB. Free memory was 328.9MB in the beginning and 309.2MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.04ms. Allocated memory is still 371.2MB. Free memory was 309.2MB in the beginning and 307.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.99ms. Allocated memory is still 371.2MB. Free memory was 307.1MB in the beginning and 305.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 321.70ms. Allocated memory is still 371.2MB. Free memory was 305.0MB in the beginning and 290.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 7556.81ms. Allocated memory was 371.2MB in the beginning and 446.7MB in the end (delta: 75.5MB). Free memory was 289.9MB in the beginning and 325.9MB in the end (delta: -36.0MB). Peak memory consumption was 43.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 95 PlacesBefore, 25 PlacesAfterwards, 103 TransitionsBefore, 30 TransitionsAfterwards, 2184 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 88 TotalNumberOfCompositions, 3620 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2037, independent: 1915, independent conditional: 0, independent unconditional: 1915, dependent: 122, dependent conditional: 0, dependent unconditional: 122, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1154, independent: 1125, independent conditional: 0, independent unconditional: 1125, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2037, independent: 790, independent conditional: 0, independent unconditional: 790, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 1154, unknown conditional: 0, unknown unconditional: 1154] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 124 PlacesBefore, 45 PlacesAfterwards, 138 TransitionsBefore, 57 TransitionsAfterwards, 6552 CoEnabledTransitionPairs, 7 FixpointIterations, 34 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 2 ChoiceCompositions, 97 TotalNumberOfCompositions, 17421 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7052, independent: 6746, independent conditional: 0, independent unconditional: 6746, dependent: 306, dependent conditional: 0, dependent unconditional: 306, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3042, independent: 2993, independent conditional: 0, independent unconditional: 2993, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7052, independent: 3753, independent conditional: 0, independent unconditional: 3753, dependent: 257, dependent conditional: 0, dependent unconditional: 257, unknown: 3042, unknown conditional: 0, unknown unconditional: 3042] , Statistics on independence cache: Total cache size (in pairs): 242, Positive cache size: 218, Positive conditional cache size: 0, Positive unconditional cache size: 218, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 691]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 120 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 143 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.0s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 382 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 264 mSDsluCounter, 116 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 106 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1058 IncrementalHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 10 mSDtfsCounter, 1058 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 91 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=7, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 185 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 1257 SizeOfPredicates, 6 NumberOfNonLiveVariables, 487 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 44/61 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 15:17:03,611 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 Received shutdown request...