/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 --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -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_longest.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 07:45:20,475 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 07:45:20,560 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 [2023-08-25 07:45:20,565 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 07:45:20,565 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 07:45:20,595 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 07:45:20,596 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 07:45:20,601 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 07:45:20,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 07:45:20,606 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 07:45:20,606 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 07:45:20,606 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 07:45:20,606 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 07:45:20,608 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 07:45:20,608 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 07:45:20,608 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 07:45:20,608 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 07:45:20,608 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 07:45:20,609 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 07:45:20,609 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 07:45:20,609 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 07:45:20,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 07:45:20,610 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 07:45:20,610 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 07:45:20,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 07:45:20,611 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 07:45:20,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 07:45:20,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:45:20,612 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 07:45:20,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 07:45:20,613 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 07:45:20,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 07:45:20,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 07:45:20,613 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 07:45:20,614 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 07:45:20,614 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 07:45:20,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 07:45:20,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 07:45:20,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 07:45:20,988 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 07:45:20,988 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 07:45:20,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_longest.i [2023-08-25 07:45:22,305 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 07:45:22,554 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 07:45:22,555 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i [2023-08-25 07:45:22,570 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc05b0f5d/e42d4d15304541b791662d511ea62c00/FLAG8f711e5e4 [2023-08-25 07:45:22,581 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc05b0f5d/e42d4d15304541b791662d511ea62c00 [2023-08-25 07:45:22,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 07:45:22,584 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 07:45:22,585 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 07:45:22,585 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 07:45:22,588 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 07:45:22,588 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:45:22" (1/1) ... [2023-08-25 07:45:22,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3054b5cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:22, skipping insertion in model container [2023-08-25 07:45:22,589 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:45:22" (1/1) ... [2023-08-25 07:45:22,638 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 07:45:23,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:45:23,147 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 07:45:23,174 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [258] [2023-08-25 07:45:23,175 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [258] [2023-08-25 07:45:23,181 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [750] [2023-08-25 07:45:23,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:45:23,254 INFO L206 MainTranslator]: Completed translation [2023-08-25 07:45:23,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:23 WrapperNode [2023-08-25 07:45:23,254 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 07:45:23,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 07:45:23,255 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 07:45:23,256 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 07:45:23,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:23" (1/1) ... [2023-08-25 07:45:23,285 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:23" (1/1) ... [2023-08-25 07:45:23,333 INFO L138 Inliner]: procedures = 274, calls = 63, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 492 [2023-08-25 07:45:23,333 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 07:45:23,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 07:45:23,334 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 07:45:23,334 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 07:45:23,342 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:23" (1/1) ... [2023-08-25 07:45:23,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:23" (1/1) ... [2023-08-25 07:45:23,351 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:23" (1/1) ... [2023-08-25 07:45:23,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:23" (1/1) ... [2023-08-25 07:45:23,383 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:23" (1/1) ... [2023-08-25 07:45:23,387 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:23" (1/1) ... [2023-08-25 07:45:23,391 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:23" (1/1) ... [2023-08-25 07:45:23,394 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:23" (1/1) ... [2023-08-25 07:45:23,399 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 07:45:23,409 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 07:45:23,409 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 07:45:23,410 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 07:45:23,410 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:23" (1/1) ... [2023-08-25 07:45:23,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:45:23,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:45:23,438 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) [2023-08-25 07:45:23,453 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 [2023-08-25 07:45:23,481 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-25 07:45:23,481 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-25 07:45:23,481 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-25 07:45:23,481 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-25 07:45:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 07:45:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 07:45:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 07:45:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 07:45:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 07:45:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 07:45:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 07:45:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 07:45:23,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 07:45:23,485 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 07:45:23,617 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 07:45:23,636 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 07:45:24,359 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 07:45:24,368 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 07:45:24,368 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 07:45:24,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:45:24 BoogieIcfgContainer [2023-08-25 07:45:24,370 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 07:45:24,372 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 07:45:24,372 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 07:45:24,374 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 07:45:24,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:45:22" (1/3) ... [2023-08-25 07:45:24,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@777a2cac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:45:24, skipping insertion in model container [2023-08-25 07:45:24,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:23" (2/3) ... [2023-08-25 07:45:24,376 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@777a2cac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:45:24, skipping insertion in model container [2023-08-25 07:45:24,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:45:24" (3/3) ... [2023-08-25 07:45:24,377 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2023-08-25 07:45:24,391 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 07:45:24,392 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 47 error locations. [2023-08-25 07:45:24,392 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 07:45:24,519 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 07:45:24,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 543 places, 554 transitions, 1124 flow [2023-08-25 07:45:24,767 INFO L124 PetriNetUnfolderBase]: 18/552 cut-off events. [2023-08-25 07:45:24,767 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 07:45:24,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561 conditions, 552 events. 18/552 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 852 event pairs, 0 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 425. Up to 2 conditions per place. [2023-08-25 07:45:24,786 INFO L82 GeneralOperation]: Start removeDead. Operand has 543 places, 554 transitions, 1124 flow [2023-08-25 07:45:24,801 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 532 places, 543 transitions, 1095 flow [2023-08-25 07:45:24,805 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 07:45:24,816 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 532 places, 543 transitions, 1095 flow [2023-08-25 07:45:24,820 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 532 places, 543 transitions, 1095 flow [2023-08-25 07:45:24,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 532 places, 543 transitions, 1095 flow [2023-08-25 07:45:24,967 INFO L124 PetriNetUnfolderBase]: 18/543 cut-off events. [2023-08-25 07:45:24,967 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 07:45:24,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 543 events. 18/543 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 817 event pairs, 0 based on Foata normal form. 0/478 useless extension candidates. Maximal degree in co-relation 425. Up to 2 conditions per place. [2023-08-25 07:45:25,011 INFO L119 LiptonReduction]: Number of co-enabled transitions 85880 [2023-08-25 07:45:44,066 WARN L234 SmtUtils]: Spent 5.31s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 07:45:49,121 WARN L234 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 121 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 07:45:56,603 WARN L234 SmtUtils]: Spent 7.48s on a formula simplification that was a NOOP. DAG size: 129 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 07:46:02,868 WARN L234 SmtUtils]: Spent 6.26s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 07:46:11,482 WARN L234 SmtUtils]: Spent 8.58s on a formula simplification. DAG size of input: 222 DAG size of output: 211 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 07:46:49,080 WARN L234 SmtUtils]: Spent 34.36s on a formula simplification. DAG size of input: 226 DAG size of output: 215 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 07:47:02,814 WARN L234 SmtUtils]: Spent 13.73s on a formula simplification that was a NOOP. DAG size: 209 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 07:47:02,844 INFO L134 LiptonReduction]: Checked pairs total: 710281 [2023-08-25 07:47:02,845 INFO L136 LiptonReduction]: Total number of compositions: 347 [2023-08-25 07:47:02,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 07:47:02,861 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;@1fad92b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 07:47:02,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2023-08-25 07:47:02,862 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 07:47:02,863 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 07:47:02,863 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:47:02,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:47:02,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 07:47:02,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 07:47:02,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:47:02,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1953, now seen corresponding path program 1 times [2023-08-25 07:47:02,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:47:02,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386217746] [2023-08-25 07:47:02,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:47:02,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:47:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:47:02,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:47:02,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:47:02,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386217746] [2023-08-25 07:47:02,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386217746] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:47:02,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:47:02,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 07:47:02,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693396568] [2023-08-25 07:47:02,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:47:02,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 07:47:02,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:47:03,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 07:47:03,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 07:47:03,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 538 out of 901 [2023-08-25 07:47:03,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 280 transitions, 569 flow. Second operand has 2 states, 2 states have (on average 538.5) internal successors, (1077), 2 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:03,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:47:03,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 538 of 901 [2023-08-25 07:47:03,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:47:05,148 INFO L124 PetriNetUnfolderBase]: 4613/13456 cut-off events. [2023-08-25 07:47:05,149 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-08-25 07:47:05,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21040 conditions, 13456 events. 4613/13456 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 116771 event pairs, 4029 based on Foata normal form. 92/12522 useless extension candidates. Maximal degree in co-relation 20602. Up to 7455 conditions per place. [2023-08-25 07:47:05,239 INFO L140 encePairwiseOnDemand]: 890/901 looper letters, 89 selfloop transitions, 0 changer transitions 0/267 dead transitions. [2023-08-25 07:47:05,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 267 transitions, 721 flow [2023-08-25 07:47:05,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 07:47:05,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 07:47:05,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1176 transitions. [2023-08-25 07:47:05,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6526082130965594 [2023-08-25 07:47:05,256 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1176 transitions. [2023-08-25 07:47:05,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1176 transitions. [2023-08-25 07:47:05,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:47:05,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1176 transitions. [2023-08-25 07:47:05,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 588.0) internal successors, (1176), 2 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:05,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 901.0) internal successors, (2703), 3 states have internal predecessors, (2703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:05,274 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 901.0) internal successors, (2703), 3 states have internal predecessors, (2703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:05,276 INFO L175 Difference]: Start difference. First operand has 276 places, 280 transitions, 569 flow. Second operand 2 states and 1176 transitions. [2023-08-25 07:47:05,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 267 transitions, 721 flow [2023-08-25 07:47:05,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 267 transitions, 716 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 07:47:05,289 INFO L231 Difference]: Finished difference. Result has 264 places, 267 transitions, 538 flow [2023-08-25 07:47:05,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=901, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=538, PETRI_PLACES=264, PETRI_TRANSITIONS=267} [2023-08-25 07:47:05,297 INFO L281 CegarLoopForPetriNet]: 276 programPoint places, -12 predicate places. [2023-08-25 07:47:05,297 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 267 transitions, 538 flow [2023-08-25 07:47:05,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 538.5) internal successors, (1077), 2 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:05,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:47:05,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:47:05,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 07:47:05,299 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 07:47:05,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:47:05,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1471366939, now seen corresponding path program 1 times [2023-08-25 07:47:05,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:47:05,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555324869] [2023-08-25 07:47:05,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:47:05,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:47:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:47:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:47:05,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:47:05,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555324869] [2023-08-25 07:47:05,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555324869] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:47:05,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:47:05,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:47:05,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997229146] [2023-08-25 07:47:05,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:47:05,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:47:05,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:47:05,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:47:05,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:47:05,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 526 out of 901 [2023-08-25 07:47:05,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 267 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 528.6666666666666) internal successors, (1586), 3 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:05,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:47:05,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 526 of 901 [2023-08-25 07:47:05,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:47:08,617 INFO L124 PetriNetUnfolderBase]: 7751/21440 cut-off events. [2023-08-25 07:47:08,617 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-25 07:47:08,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34032 conditions, 21440 events. 7751/21440 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 188049 event pairs, 1921 based on Foata normal form. 0/19556 useless extension candidates. Maximal degree in co-relation 34029. Up to 6760 conditions per place. [2023-08-25 07:47:08,738 INFO L140 encePairwiseOnDemand]: 896/901 looper letters, 172 selfloop transitions, 4 changer transitions 0/350 dead transitions. [2023-08-25 07:47:08,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 350 transitions, 1057 flow [2023-08-25 07:47:08,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:47:08,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:47:08,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1755 transitions. [2023-08-25 07:47:08,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6492785793562708 [2023-08-25 07:47:08,743 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1755 transitions. [2023-08-25 07:47:08,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1755 transitions. [2023-08-25 07:47:08,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:47:08,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1755 transitions. [2023-08-25 07:47:08,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 585.0) internal successors, (1755), 3 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:08,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 901.0) internal successors, (3604), 4 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:08,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 901.0) internal successors, (3604), 4 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:08,757 INFO L175 Difference]: Start difference. First operand has 264 places, 267 transitions, 538 flow. Second operand 3 states and 1755 transitions. [2023-08-25 07:47:08,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 350 transitions, 1057 flow [2023-08-25 07:47:08,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 350 transitions, 1057 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:47:08,770 INFO L231 Difference]: Finished difference. Result has 268 places, 271 transitions, 572 flow [2023-08-25 07:47:08,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=901, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=572, PETRI_PLACES=268, PETRI_TRANSITIONS=271} [2023-08-25 07:47:08,772 INFO L281 CegarLoopForPetriNet]: 276 programPoint places, -8 predicate places. [2023-08-25 07:47:08,773 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 271 transitions, 572 flow [2023-08-25 07:47:08,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 528.6666666666666) internal successors, (1586), 3 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:08,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:47:08,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:47:08,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 07:47:08,782 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 07:47:08,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:47:08,784 INFO L85 PathProgramCache]: Analyzing trace with hash -65449701, now seen corresponding path program 1 times [2023-08-25 07:47:08,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:47:08,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583905317] [2023-08-25 07:47:08,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:47:08,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:47:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:47:09,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:47:09,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:47:09,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583905317] [2023-08-25 07:47:09,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583905317] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:47:09,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:47:09,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:47:09,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285638181] [2023-08-25 07:47:09,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:47:09,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:47:09,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:47:09,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:47:09,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:47:09,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 901 [2023-08-25 07:47:09,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 271 transitions, 572 flow. Second operand has 6 states, 6 states have (on average 303.5) internal successors, (1821), 6 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:09,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:47:09,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 901 [2023-08-25 07:47:09,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:47:56,012 INFO L124 PetriNetUnfolderBase]: 316296/494229 cut-off events. [2023-08-25 07:47:56,013 INFO L125 PetriNetUnfolderBase]: For 9976/9976 co-relation queries the response was YES. [2023-08-25 07:47:56,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985578 conditions, 494229 events. 316296/494229 cut-off events. For 9976/9976 co-relation queries the response was YES. Maximal size of possible extension queue 1493. Compared 3767952 event pairs, 204115 based on Foata normal form. 0/420393 useless extension candidates. Maximal degree in co-relation 985573. Up to 365681 conditions per place. [2023-08-25 07:47:58,749 INFO L140 encePairwiseOnDemand]: 845/901 looper letters, 553 selfloop transitions, 86 changer transitions 0/659 dead transitions. [2023-08-25 07:47:58,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 659 transitions, 2682 flow [2023-08-25 07:47:58,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:47:58,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:47:58,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2446 transitions. [2023-08-25 07:47:58,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45246022937476876 [2023-08-25 07:47:58,756 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2446 transitions. [2023-08-25 07:47:58,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2446 transitions. [2023-08-25 07:47:58,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:47:58,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2446 transitions. [2023-08-25 07:47:58,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 407.6666666666667) internal successors, (2446), 6 states have internal predecessors, (2446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:58,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 901.0) internal successors, (6307), 7 states have internal predecessors, (6307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:58,774 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 901.0) internal successors, (6307), 7 states have internal predecessors, (6307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:58,774 INFO L175 Difference]: Start difference. First operand has 268 places, 271 transitions, 572 flow. Second operand 6 states and 2446 transitions. [2023-08-25 07:47:58,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 659 transitions, 2682 flow [2023-08-25 07:47:58,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 659 transitions, 2658 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:47:58,804 INFO L231 Difference]: Finished difference. Result has 276 places, 353 transitions, 1176 flow [2023-08-25 07:47:58,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=901, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1176, PETRI_PLACES=276, PETRI_TRANSITIONS=353} [2023-08-25 07:47:58,805 INFO L281 CegarLoopForPetriNet]: 276 programPoint places, 0 predicate places. [2023-08-25 07:47:58,805 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 353 transitions, 1176 flow [2023-08-25 07:47:58,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 303.5) internal successors, (1821), 6 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:58,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:47:58,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:47:58,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 07:47:58,807 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 07:47:58,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:47:58,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1489047835, now seen corresponding path program 1 times [2023-08-25 07:47:58,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:47:58,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496218125] [2023-08-25 07:47:58,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:47:58,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:47:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:47:59,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:47:59,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:47:59,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496218125] [2023-08-25 07:47:59,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496218125] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:47:59,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:47:59,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:47:59,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45914869] [2023-08-25 07:47:59,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:47:59,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:47:59,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:47:59,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:47:59,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:47:59,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 901 [2023-08-25 07:47:59,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 353 transitions, 1176 flow. Second operand has 6 states, 6 states have (on average 317.6666666666667) internal successors, (1906), 6 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:59,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:47:59,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 901 [2023-08-25 07:47:59,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:49:23,421 INFO L124 PetriNetUnfolderBase]: 498280/777244 cut-off events. [2023-08-25 07:49:23,421 INFO L125 PetriNetUnfolderBase]: For 177088/177088 co-relation queries the response was YES. [2023-08-25 07:49:25,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1766893 conditions, 777244 events. 498280/777244 cut-off events. For 177088/177088 co-relation queries the response was YES. Maximal size of possible extension queue 2457. Compared 6474499 event pairs, 172622 based on Foata normal form. 0/680138 useless extension candidates. Maximal degree in co-relation 1766884. Up to 474034 conditions per place. [2023-08-25 07:49:28,080 INFO L140 encePairwiseOnDemand]: 843/901 looper letters, 1157 selfloop transitions, 429 changer transitions 0/1609 dead transitions. [2023-08-25 07:49:28,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 1609 transitions, 8701 flow [2023-08-25 07:49:28,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:49:28,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:49:28,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3058 transitions. [2023-08-25 07:49:28,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5656677765445801 [2023-08-25 07:49:28,089 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3058 transitions. [2023-08-25 07:49:28,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3058 transitions. [2023-08-25 07:49:28,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:49:28,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3058 transitions. [2023-08-25 07:49:28,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 509.6666666666667) internal successors, (3058), 6 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:49:28,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 901.0) internal successors, (6307), 7 states have internal predecessors, (6307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:49:28,111 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 901.0) internal successors, (6307), 7 states have internal predecessors, (6307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:49:28,111 INFO L175 Difference]: Start difference. First operand has 276 places, 353 transitions, 1176 flow. Second operand 6 states and 3058 transitions. [2023-08-25 07:49:28,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 1609 transitions, 8701 flow [2023-08-25 07:49:29,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 1609 transitions, 8701 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:49:29,579 INFO L231 Difference]: Finished difference. Result has 286 places, 781 transitions, 4978 flow [2023-08-25 07:49:29,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=901, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4978, PETRI_PLACES=286, PETRI_TRANSITIONS=781} [2023-08-25 07:49:29,581 INFO L281 CegarLoopForPetriNet]: 276 programPoint places, 10 predicate places. [2023-08-25 07:49:29,581 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 781 transitions, 4978 flow [2023-08-25 07:49:29,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 317.6666666666667) internal successors, (1906), 6 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:49:29,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:49:29,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:49:29,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 07:49:29,583 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 07:49:29,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:49:29,583 INFO L85 PathProgramCache]: Analyzing trace with hash 787523574, now seen corresponding path program 1 times [2023-08-25 07:49:29,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:49:29,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362572275] [2023-08-25 07:49:29,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:49:29,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:49:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:49:29,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:49:29,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:49:29,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362572275] [2023-08-25 07:49:29,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362572275] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:49:29,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:49:29,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:49:29,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690875917] [2023-08-25 07:49:29,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:49:29,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:49:29,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:49:29,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:49:29,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:49:29,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 901 [2023-08-25 07:49:29,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 781 transitions, 4978 flow. Second operand has 6 states, 6 states have (on average 298.5) internal successors, (1791), 6 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:49:29,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:49:29,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 901 [2023-08-25 07:49:29,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand