/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/pthread/queue_ok_longer.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 18:10:56,478 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 18:10:56,550 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 18:10:56,556 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 18:10:56,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 18:10:56,576 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 18:10:56,577 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 18:10:56,577 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 18:10:56,578 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 18:10:56,578 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 18:10:56,578 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 18:10:56,579 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 18:10:56,579 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 18:10:56,579 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 18:10:56,580 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 18:10:56,580 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 18:10:56,580 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 18:10:56,581 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 18:10:56,581 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 18:10:56,581 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 18:10:56,582 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 18:10:56,585 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 18:10:56,585 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 18:10:56,586 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 18:10:56,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 18:10:56,589 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 18:10:56,589 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 18:10:56,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:10:56,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 18:10:56,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 18:10:56,591 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 18:10:56,591 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 18:10:56,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 18:10:56,592 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 18:10:56,592 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 18:10:56,592 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-24 18:10:56,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 18:10:56,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 18:10:56,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 18:10:56,935 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 18:10:56,935 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 18:10:56,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_ok_longer.i [2023-08-24 18:10:58,218 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 18:10:58,488 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 18:10:58,489 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longer.i [2023-08-24 18:10:58,504 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08f84052e/ad03ec3c4f6e4e1b81dd98f0a503b8bb/FLAG12c718a7e [2023-08-24 18:10:58,524 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08f84052e/ad03ec3c4f6e4e1b81dd98f0a503b8bb [2023-08-24 18:10:58,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 18:10:58,527 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 18:10:58,528 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 18:10:58,528 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 18:10:58,531 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 18:10:58,531 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:10:58" (1/1) ... [2023-08-24 18:10:58,532 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c49bad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:10:58, skipping insertion in model container [2023-08-24 18:10:58,532 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:10:58" (1/1) ... [2023-08-24 18:10:58,584 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 18:10:58,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:10:59,010 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 18:10:59,035 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [258] [2023-08-24 18:10:59,037 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [258] [2023-08-24 18:10:59,042 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [750] [2023-08-24 18:10:59,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:10:59,155 INFO L206 MainTranslator]: Completed translation [2023-08-24 18:10:59,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:10:59 WrapperNode [2023-08-24 18:10:59,157 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 18:10:59,159 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 18:10:59,159 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 18:10:59,159 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 18:10:59,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:10:59" (1/1) ... [2023-08-24 18:10:59,200 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:10:59" (1/1) ... [2023-08-24 18:10:59,260 INFO L138 Inliner]: procedures = 274, calls = 59, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 394 [2023-08-24 18:10:59,261 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 18:10:59,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 18:10:59,261 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 18:10:59,261 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 18:10:59,274 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:10:59" (1/1) ... [2023-08-24 18:10:59,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:10:59" (1/1) ... [2023-08-24 18:10:59,293 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:10:59" (1/1) ... [2023-08-24 18:10:59,293 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:10:59" (1/1) ... [2023-08-24 18:10:59,333 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:10:59" (1/1) ... [2023-08-24 18:10:59,337 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:10:59" (1/1) ... [2023-08-24 18:10:59,339 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:10:59" (1/1) ... [2023-08-24 18:10:59,341 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:10:59" (1/1) ... [2023-08-24 18:10:59,352 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 18:10:59,353 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 18:10:59,353 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 18:10:59,353 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 18:10:59,354 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:10:59" (1/1) ... [2023-08-24 18:10:59,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:10:59,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:10:59,382 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) [2023-08-24 18:10:59,404 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 [2023-08-24 18:10:59,416 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-24 18:10:59,417 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-24 18:10:59,417 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-24 18:10:59,418 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-24 18:10:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 18:10:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 18:10:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 18:10:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 18:10:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 18:10:59,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 18:10:59,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 18:10:59,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 18:10:59,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 18:10:59,420 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 18:10:59,583 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 18:10:59,585 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 18:11:00,126 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 18:11:00,135 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 18:11:00,135 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-24 18:11:00,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:11:00 BoogieIcfgContainer [2023-08-24 18:11:00,137 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 18:11:00,138 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 18:11:00,139 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 18:11:00,141 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 18:11:00,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:10:58" (1/3) ... [2023-08-24 18:11:00,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb51681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:11:00, skipping insertion in model container [2023-08-24 18:11:00,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:10:59" (2/3) ... [2023-08-24 18:11:00,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb51681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:11:00, skipping insertion in model container [2023-08-24 18:11:00,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:11:00" (3/3) ... [2023-08-24 18:11:00,143 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2023-08-24 18:11:00,156 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 18:11:00,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2023-08-24 18:11:00,157 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 18:11:00,290 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 18:11:00,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 444 transitions, 904 flow [2023-08-24 18:11:00,576 INFO L124 PetriNetUnfolderBase]: 15/442 cut-off events. [2023-08-24 18:11:00,577 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 18:11:00,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 442 events. 15/442 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 802 event pairs, 0 based on Foata normal form. 0/390 useless extension candidates. Maximal degree in co-relation 315. Up to 3 conditions per place. [2023-08-24 18:11:00,590 INFO L82 GeneralOperation]: Start removeDead. Operand has 436 places, 444 transitions, 904 flow [2023-08-24 18:11:00,600 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 425 places, 433 transitions, 875 flow [2023-08-24 18:11:00,604 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:11:00,620 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 425 places, 433 transitions, 875 flow [2023-08-24 18:11:00,623 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 425 places, 433 transitions, 875 flow [2023-08-24 18:11:00,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 433 transitions, 875 flow [2023-08-24 18:11:00,730 INFO L124 PetriNetUnfolderBase]: 15/433 cut-off events. [2023-08-24 18:11:00,730 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 18:11:00,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 433 events. 15/433 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 730 event pairs, 0 based on Foata normal form. 0/381 useless extension candidates. Maximal degree in co-relation 315. Up to 3 conditions per place. [2023-08-24 18:11:00,758 INFO L119 LiptonReduction]: Number of co-enabled transitions 52968 [2023-08-24 18:11:17,694 WARN L234 SmtUtils]: Spent 7.82s on a formula simplification. DAG size of input: 129 DAG size of output: 126 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-24 18:11:30,726 WARN L234 SmtUtils]: Spent 10.37s on a formula simplification. DAG size of input: 139 DAG size of output: 134 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-24 18:12:04,106 WARN L234 SmtUtils]: Spent 27.85s on a formula simplification. DAG size of input: 235 DAG size of output: 224 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-24 18:12:41,495 WARN L234 SmtUtils]: Spent 34.34s on a formula simplification. DAG size of input: 242 DAG size of output: 231 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-24 18:12:52,886 WARN L234 SmtUtils]: Spent 11.39s on a formula simplification that was a NOOP. DAG size: 219 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-24 18:12:52,907 INFO L134 LiptonReduction]: Checked pairs total: 425992 [2023-08-24 18:12:52,907 INFO L136 LiptonReduction]: Total number of compositions: 308 [2023-08-24 18:12:52,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:12:52,923 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=false, 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;@526aa79d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:12:52,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 66 error locations. [2023-08-24 18:12:52,924 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:12:52,925 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-24 18:12:52,925 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:12:52,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:12:52,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-24 18:12:52,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-24 18:12:52,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:12:52,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1578, now seen corresponding path program 1 times [2023-08-24 18:12:52,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:12:52,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051433610] [2023-08-24 18:12:52,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:12:52,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:12:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:12:53,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:12:53,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:12:53,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051433610] [2023-08-24 18:12:53,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051433610] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:12:53,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:12:53,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-24 18:12:53,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040538829] [2023-08-24 18:12:53,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:12:53,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:12:53,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:12:53,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:12:53,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:12:53,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 431 out of 752 [2023-08-24 18:12:53,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 206 transitions, 421 flow. Second operand has 2 states, 2 states have (on average 431.5) internal successors, (863), 2 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:53,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:12:53,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 431 of 752 [2023-08-24 18:12:53,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:12:54,072 INFO L124 PetriNetUnfolderBase]: 2398/7544 cut-off events. [2023-08-24 18:12:54,072 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2023-08-24 18:12:54,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11480 conditions, 7544 events. 2398/7544 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 63457 event pairs, 2022 based on Foata normal form. 52/6993 useless extension candidates. Maximal degree in co-relation 11034. Up to 3854 conditions per place. [2023-08-24 18:12:54,125 INFO L140 encePairwiseOnDemand]: 743/752 looper letters, 64 selfloop transitions, 0 changer transitions 0/197 dead transitions. [2023-08-24 18:12:54,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 197 transitions, 531 flow [2023-08-24 18:12:54,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:12:54,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:12:54,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 935 transitions. [2023-08-24 18:12:54,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216755319148937 [2023-08-24 18:12:54,148 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 935 transitions. [2023-08-24 18:12:54,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 935 transitions. [2023-08-24 18:12:54,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:12:54,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 935 transitions. [2023-08-24 18:12:54,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 467.5) internal successors, (935), 2 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:54,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 752.0) internal successors, (2256), 3 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:54,167 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 752.0) internal successors, (2256), 3 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:54,169 INFO L175 Difference]: Start difference. First operand has 205 places, 206 transitions, 421 flow. Second operand 2 states and 935 transitions. [2023-08-24 18:12:54,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 197 transitions, 531 flow [2023-08-24 18:12:54,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 197 transitions, 526 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 18:12:54,179 INFO L231 Difference]: Finished difference. Result has 195 places, 197 transitions, 398 flow [2023-08-24 18:12:54,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=398, PETRI_PLACES=195, PETRI_TRANSITIONS=197} [2023-08-24 18:12:54,186 INFO L281 CegarLoopForPetriNet]: 205 programPoint places, -10 predicate places. [2023-08-24 18:12:54,186 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 197 transitions, 398 flow [2023-08-24 18:12:54,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 431.5) internal successors, (863), 2 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:54,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:12:54,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-24 18:12:54,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 18:12:54,188 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-24 18:12:54,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:12:54,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1506183822, now seen corresponding path program 1 times [2023-08-24 18:12:54,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:12:54,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882379753] [2023-08-24 18:12:54,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:12:54,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:12:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:12:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:12:54,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:12:54,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882379753] [2023-08-24 18:12:54,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882379753] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:12:54,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:12:54,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:12:54,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767546890] [2023-08-24 18:12:54,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:12:54,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:12:54,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:12:54,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:12:54,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:12:54,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 752 [2023-08-24 18:12:54,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 197 transitions, 398 flow. Second operand has 3 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:54,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:12:54,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 752 [2023-08-24 18:12:54,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:12:55,642 INFO L124 PetriNetUnfolderBase]: 3306/9643 cut-off events. [2023-08-24 18:12:55,644 INFO L125 PetriNetUnfolderBase]: For 24/76 co-relation queries the response was YES. [2023-08-24 18:12:55,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15090 conditions, 9643 events. 3306/9643 cut-off events. For 24/76 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 83553 event pairs, 728 based on Foata normal form. 2/8634 useless extension candidates. Maximal degree in co-relation 15087. Up to 3776 conditions per place. [2023-08-24 18:12:55,719 INFO L140 encePairwiseOnDemand]: 747/752 looper letters, 127 selfloop transitions, 4 changer transitions 0/258 dead transitions. [2023-08-24 18:12:55,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 258 transitions, 785 flow [2023-08-24 18:12:55,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:12:55,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:12:55,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1389 transitions. [2023-08-24 18:12:55,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6156914893617021 [2023-08-24 18:12:55,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1389 transitions. [2023-08-24 18:12:55,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1389 transitions. [2023-08-24 18:12:55,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:12:55,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1389 transitions. [2023-08-24 18:12:55,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 463.0) internal successors, (1389), 3 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:55,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:55,733 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:55,733 INFO L175 Difference]: Start difference. First operand has 195 places, 197 transitions, 398 flow. Second operand 3 states and 1389 transitions. [2023-08-24 18:12:55,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 258 transitions, 785 flow [2023-08-24 18:12:55,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 258 transitions, 785 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:12:55,742 INFO L231 Difference]: Finished difference. Result has 199 places, 200 transitions, 428 flow [2023-08-24 18:12:55,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=428, PETRI_PLACES=199, PETRI_TRANSITIONS=200} [2023-08-24 18:12:55,744 INFO L281 CegarLoopForPetriNet]: 205 programPoint places, -6 predicate places. [2023-08-24 18:12:55,747 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 200 transitions, 428 flow [2023-08-24 18:12:55,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:55,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:12:55,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:12:55,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 18:12:55,748 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-24 18:12:55,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:12:55,749 INFO L85 PathProgramCache]: Analyzing trace with hash 60779051, now seen corresponding path program 1 times [2023-08-24 18:12:55,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:12:55,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327750477] [2023-08-24 18:12:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:12:55,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:12:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:12:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:12:55,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:12:55,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327750477] [2023-08-24 18:12:55,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327750477] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:12:55,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:12:55,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:12:55,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871130509] [2023-08-24 18:12:55,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:12:55,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:12:55,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:12:55,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:12:55,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:12:55,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 752 [2023-08-24 18:12:55,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 200 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:55,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:12:55,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 752 [2023-08-24 18:12:55,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:12:57,082 INFO L124 PetriNetUnfolderBase]: 3504/10789 cut-off events. [2023-08-24 18:12:57,082 INFO L125 PetriNetUnfolderBase]: For 343/343 co-relation queries the response was YES. [2023-08-24 18:12:57,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16922 conditions, 10789 events. 3504/10789 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 97874 event pairs, 889 based on Foata normal form. 0/9778 useless extension candidates. Maximal degree in co-relation 16917. Up to 3715 conditions per place. [2023-08-24 18:12:57,139 INFO L140 encePairwiseOnDemand]: 747/752 looper letters, 128 selfloop transitions, 4 changer transitions 0/259 dead transitions. [2023-08-24 18:12:57,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 259 transitions, 815 flow [2023-08-24 18:12:57,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:12:57,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:12:57,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1388 transitions. [2023-08-24 18:12:57,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6152482269503546 [2023-08-24 18:12:57,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1388 transitions. [2023-08-24 18:12:57,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1388 transitions. [2023-08-24 18:12:57,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:12:57,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1388 transitions. [2023-08-24 18:12:57,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 462.6666666666667) internal successors, (1388), 3 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:57,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:57,153 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:57,153 INFO L175 Difference]: Start difference. First operand has 199 places, 200 transitions, 428 flow. Second operand 3 states and 1388 transitions. [2023-08-24 18:12:57,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 259 transitions, 815 flow [2023-08-24 18:12:57,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 259 transitions, 805 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:12:57,159 INFO L231 Difference]: Finished difference. Result has 201 places, 203 transitions, 450 flow [2023-08-24 18:12:57,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=450, PETRI_PLACES=201, PETRI_TRANSITIONS=203} [2023-08-24 18:12:57,160 INFO L281 CegarLoopForPetriNet]: 205 programPoint places, -4 predicate places. [2023-08-24 18:12:57,160 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 203 transitions, 450 flow [2023-08-24 18:12:57,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:57,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:12:57,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:12:57,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 18:12:57,162 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-24 18:12:57,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:12:57,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1447325851, now seen corresponding path program 1 times [2023-08-24 18:12:57,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:12:57,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989248163] [2023-08-24 18:12:57,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:12:57,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:12:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:12:57,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:12:57,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:12:57,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989248163] [2023-08-24 18:12:57,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989248163] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:12:57,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:12:57,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 18:12:57,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836562216] [2023-08-24 18:12:57,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:12:57,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:12:57,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:12:57,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:12:57,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:12:57,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 752 [2023-08-24 18:12:57,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 203 transitions, 450 flow. Second operand has 3 states, 3 states have (on average 420.0) internal successors, (1260), 3 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:57,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:12:57,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 752 [2023-08-24 18:12:57,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:12:59,115 INFO L124 PetriNetUnfolderBase]: 5492/16081 cut-off events. [2023-08-24 18:12:59,115 INFO L125 PetriNetUnfolderBase]: For 841/841 co-relation queries the response was YES. [2023-08-24 18:12:59,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25960 conditions, 16081 events. 5492/16081 cut-off events. For 841/841 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 149195 event pairs, 2886 based on Foata normal form. 0/14688 useless extension candidates. Maximal degree in co-relation 25954. Up to 5372 conditions per place. [2023-08-24 18:12:59,200 INFO L140 encePairwiseOnDemand]: 749/752 looper letters, 125 selfloop transitions, 2 changer transitions 0/259 dead transitions. [2023-08-24 18:12:59,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 259 transitions, 828 flow [2023-08-24 18:12:59,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:12:59,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:12:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1379 transitions. [2023-08-24 18:12:59,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6112588652482269 [2023-08-24 18:12:59,204 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1379 transitions. [2023-08-24 18:12:59,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1379 transitions. [2023-08-24 18:12:59,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:12:59,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1379 transitions. [2023-08-24 18:12:59,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 459.6666666666667) internal successors, (1379), 3 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:59,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:59,213 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:59,213 INFO L175 Difference]: Start difference. First operand has 201 places, 203 transitions, 450 flow. Second operand 3 states and 1379 transitions. [2023-08-24 18:12:59,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 259 transitions, 828 flow [2023-08-24 18:12:59,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 259 transitions, 816 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:12:59,220 INFO L231 Difference]: Finished difference. Result has 202 places, 204 transitions, 454 flow [2023-08-24 18:12:59,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=202, PETRI_TRANSITIONS=204} [2023-08-24 18:12:59,222 INFO L281 CegarLoopForPetriNet]: 205 programPoint places, -3 predicate places. [2023-08-24 18:12:59,222 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 204 transitions, 454 flow [2023-08-24 18:12:59,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 420.0) internal successors, (1260), 3 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:59,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:12:59,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:12:59,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 18:12:59,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-24 18:12:59,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:12:59,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1979399093, now seen corresponding path program 1 times [2023-08-24 18:12:59,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:12:59,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311088116] [2023-08-24 18:12:59,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:12:59,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:12:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:12:59,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:12:59,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:12:59,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311088116] [2023-08-24 18:12:59,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311088116] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:12:59,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:12:59,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 18:12:59,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608533559] [2023-08-24 18:12:59,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:12:59,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 18:12:59,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:12:59,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 18:12:59,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-24 18:12:59,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 752 [2023-08-24 18:12:59,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 204 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 264.6666666666667) internal successors, (1588), 6 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:12:59,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:12:59,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 752 [2023-08-24 18:12:59,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:13:37,154 INFO L124 PetriNetUnfolderBase]: 280881/439237 cut-off events. [2023-08-24 18:13:37,154 INFO L125 PetriNetUnfolderBase]: For 11243/11243 co-relation queries the response was YES. [2023-08-24 18:13:38,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885128 conditions, 439237 events. 280881/439237 cut-off events. For 11243/11243 co-relation queries the response was YES. Maximal size of possible extension queue 2530. Compared 3673261 event pairs, 108880 based on Foata normal form. 0/379779 useless extension candidates. Maximal degree in co-relation 885121. Up to 269755 conditions per place. [2023-08-24 18:13:39,534 INFO L140 encePairwiseOnDemand]: 714/752 looper letters, 698 selfloop transitions, 133 changer transitions 0/856 dead transitions. [2023-08-24 18:13:39,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 856 transitions, 3517 flow [2023-08-24 18:13:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 18:13:39,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 18:13:39,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2390 transitions. [2023-08-24 18:13:39,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5296985815602837 [2023-08-24 18:13:39,541 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2390 transitions. [2023-08-24 18:13:39,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2390 transitions. [2023-08-24 18:13:39,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:13:39,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2390 transitions. [2023-08-24 18:13:39,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 398.3333333333333) internal successors, (2390), 6 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:13:39,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 752.0) internal successors, (5264), 7 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:13:39,557 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 752.0) internal successors, (5264), 7 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:13:39,557 INFO L175 Difference]: Start difference. First operand has 202 places, 204 transitions, 454 flow. Second operand 6 states and 2390 transitions. [2023-08-24 18:13:39,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 856 transitions, 3517 flow [2023-08-24 18:13:39,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 856 transitions, 3507 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 18:13:39,596 INFO L231 Difference]: Finished difference. Result has 211 places, 336 transitions, 1322 flow [2023-08-24 18:13:39,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1322, PETRI_PLACES=211, PETRI_TRANSITIONS=336} [2023-08-24 18:13:39,598 INFO L281 CegarLoopForPetriNet]: 205 programPoint places, 6 predicate places. [2023-08-24 18:13:39,598 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 336 transitions, 1322 flow [2023-08-24 18:13:39,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 264.6666666666667) internal successors, (1588), 6 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:13:39,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:13:39,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:13:39,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 18:13:39,599 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err13ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-24 18:13:39,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:13:39,600 INFO L85 PathProgramCache]: Analyzing trace with hash -154006782, now seen corresponding path program 1 times [2023-08-24 18:13:39,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:13:39,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298988894] [2023-08-24 18:13:39,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:13:39,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:13:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:13:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:13:39,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:13:39,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298988894] [2023-08-24 18:13:39,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298988894] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:13:39,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:13:39,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 18:13:39,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716398996] [2023-08-24 18:13:39,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:13:39,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:13:39,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:13:39,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:13:39,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:13:39,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 752 [2023-08-24 18:13:39,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 336 transitions, 1322 flow. Second operand has 3 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:13:39,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:13:39,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 752 [2023-08-24 18:13:39,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:13:54,336 INFO L124 PetriNetUnfolderBase]: 58012/147969 cut-off events. [2023-08-24 18:13:54,336 INFO L125 PetriNetUnfolderBase]: For 35700/44439 co-relation queries the response was YES. [2023-08-24 18:13:54,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305519 conditions, 147969 events. 58012/147969 cut-off events. For 35700/44439 co-relation queries the response was YES. Maximal size of possible extension queue 1734. Compared 1819412 event pairs, 19276 based on Foata normal form. 4/138074 useless extension candidates. Maximal degree in co-relation 305508. Up to 44474 conditions per place. [2023-08-24 18:13:55,426 INFO L140 encePairwiseOnDemand]: 748/752 looper letters, 169 selfloop transitions, 3 changer transitions 0/414 dead transitions. [2023-08-24 18:13:55,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 414 transitions, 1923 flow [2023-08-24 18:13:55,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:13:55,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:13:55,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1382 transitions. [2023-08-24 18:13:55,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6125886524822695 [2023-08-24 18:13:55,429 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1382 transitions. [2023-08-24 18:13:55,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1382 transitions. [2023-08-24 18:13:55,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:13:55,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1382 transitions. [2023-08-24 18:13:55,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 460.6666666666667) internal successors, (1382), 3 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:13:55,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:13:55,437 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:13:55,437 INFO L175 Difference]: Start difference. First operand has 211 places, 336 transitions, 1322 flow. Second operand 3 states and 1382 transitions. [2023-08-24 18:13:55,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 414 transitions, 1923 flow [2023-08-24 18:13:58,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 414 transitions, 1923 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:13:58,800 INFO L231 Difference]: Finished difference. Result has 214 places, 338 transitions, 1341 flow [2023-08-24 18:13:58,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1341, PETRI_PLACES=214, PETRI_TRANSITIONS=338} [2023-08-24 18:13:58,801 INFO L281 CegarLoopForPetriNet]: 205 programPoint places, 9 predicate places. [2023-08-24 18:13:58,801 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 338 transitions, 1341 flow [2023-08-24 18:13:58,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:13:58,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:13:58,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:13:58,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 18:13:58,802 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-24 18:13:58,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:13:58,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1387798132, now seen corresponding path program 1 times [2023-08-24 18:13:58,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:13:58,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455387101] [2023-08-24 18:13:58,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:13:58,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:13:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:13:59,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:13:59,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:13:59,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455387101] [2023-08-24 18:13:59,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455387101] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:13:59,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:13:59,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 18:13:59,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482383197] [2023-08-24 18:13:59,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:13:59,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 18:13:59,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:13:59,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 18:13:59,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-24 18:13:59,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 752 [2023-08-24 18:13:59,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 338 transitions, 1341 flow. Second operand has 6 states, 6 states have (on average 260.6666666666667) internal successors, (1564), 6 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:13:59,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:13:59,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 752 [2023-08-24 18:13:59,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand