/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 PROGRAM_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/goblint-regression/28-race_reach_83-list2_racing1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 08:03:10,644 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 08:03:10,733 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 [2023-08-26 08:03:10,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 08:03:10,738 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 08:03:10,771 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 08:03:10,772 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 08:03:10,772 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 08:03:10,773 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 08:03:10,776 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 08:03:10,777 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 08:03:10,777 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 08:03:10,777 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 08:03:10,778 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 08:03:10,779 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 08:03:10,779 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 08:03:10,779 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 08:03:10,779 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 08:03:10,779 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 08:03:10,780 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 08:03:10,780 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 08:03:10,780 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 08:03:10,780 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 08:03:10,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 08:03:10,781 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 08:03:10,781 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 08:03:10,782 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 08:03:10,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 08:03:10,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 08:03:10,782 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 08:03:10,783 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 08:03:10,783 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 08:03:10,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 08:03:10,784 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 08:03:10,784 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 08:03:10,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 08:03:11,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 08:03:11,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 08:03:11,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 08:03:11,129 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 08:03:11,130 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 08:03:11,131 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i [2023-08-26 08:03:12,374 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 08:03:12,708 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 08:03:12,709 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i [2023-08-26 08:03:12,732 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a846b109d/9cad11cb7b39424ab0b7f9c1027a656c/FLAG99cb03f2c [2023-08-26 08:03:12,748 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a846b109d/9cad11cb7b39424ab0b7f9c1027a656c [2023-08-26 08:03:12,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 08:03:12,751 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 08:03:12,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 08:03:12,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 08:03:12,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 08:03:12,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:03:12" (1/1) ... [2023-08-26 08:03:12,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ccd6399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:03:12, skipping insertion in model container [2023-08-26 08:03:12,756 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:03:12" (1/1) ... [2023-08-26 08:03:12,804 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 08:03:13,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 08:03:13,399 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 08:03:13,425 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-26 08:03:13,426 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-26 08:03:13,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 08:03:13,541 INFO L206 MainTranslator]: Completed translation [2023-08-26 08:03:13,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:03:13 WrapperNode [2023-08-26 08:03:13,541 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 08:03:13,542 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 08:03:13,542 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 08:03:13,542 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 08:03:13,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:03:13" (1/1) ... [2023-08-26 08:03:13,577 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:03:13" (1/1) ... [2023-08-26 08:03:13,631 INFO L138 Inliner]: procedures = 279, calls = 87, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 534 [2023-08-26 08:03:13,631 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 08:03:13,632 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 08:03:13,632 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 08:03:13,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 08:03:13,642 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:03:13" (1/1) ... [2023-08-26 08:03:13,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:03:13" (1/1) ... [2023-08-26 08:03:13,650 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:03:13" (1/1) ... [2023-08-26 08:03:13,650 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:03:13" (1/1) ... [2023-08-26 08:03:13,678 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:03:13" (1/1) ... [2023-08-26 08:03:13,684 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:03:13" (1/1) ... [2023-08-26 08:03:13,689 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:03:13" (1/1) ... [2023-08-26 08:03:13,692 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:03:13" (1/1) ... [2023-08-26 08:03:13,699 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 08:03:13,700 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 08:03:13,700 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 08:03:13,700 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 08:03:13,701 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:03:13" (1/1) ... [2023-08-26 08:03:13,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 08:03:13,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 08:03:13,742 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) [2023-08-26 08:03:13,747 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 [2023-08-26 08:03:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 08:03:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-26 08:03:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-26 08:03:13,781 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-26 08:03:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 08:03:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 08:03:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-26 08:03:13,781 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-26 08:03:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 08:03:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 08:03:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 08:03:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 08:03:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-26 08:03:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-26 08:03:13,783 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-26 08:03:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 08:03:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 08:03:13,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 08:03:13,785 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 08:03:13,998 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 08:03:13,999 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 08:03:14,684 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 08:03:14,701 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 08:03:14,701 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-08-26 08:03:14,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:03:14 BoogieIcfgContainer [2023-08-26 08:03:14,705 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 08:03:14,707 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 08:03:14,707 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 08:03:14,710 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 08:03:14,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 08:03:12" (1/3) ... [2023-08-26 08:03:14,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1092279c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:03:14, skipping insertion in model container [2023-08-26 08:03:14,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:03:13" (2/3) ... [2023-08-26 08:03:14,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1092279c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:03:14, skipping insertion in model container [2023-08-26 08:03:14,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:03:14" (3/3) ... [2023-08-26 08:03:14,713 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_83-list2_racing1.i [2023-08-26 08:03:14,730 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 08:03:14,731 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-08-26 08:03:14,731 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 08:03:14,919 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-26 08:03:14,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 536 places, 577 transitions, 1196 flow [2023-08-26 08:03:15,538 INFO L124 PetriNetUnfolderBase]: 171/1668 cut-off events. [2023-08-26 08:03:15,539 INFO L125 PetriNetUnfolderBase]: For 36/62 co-relation queries the response was YES. [2023-08-26 08:03:15,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 1668 events. 171/1668 cut-off events. For 36/62 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 12132 event pairs, 0 based on Foata normal form. 0/1393 useless extension candidates. Maximal degree in co-relation 855. Up to 16 conditions per place. [2023-08-26 08:03:15,582 INFO L82 GeneralOperation]: Start removeDead. Operand has 536 places, 577 transitions, 1196 flow [2023-08-26 08:03:15,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 536 places, 577 transitions, 1196 flow [2023-08-26 08:03:15,612 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 08:03:15,625 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 536 places, 577 transitions, 1196 flow [2023-08-26 08:03:15,628 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 536 places, 577 transitions, 1196 flow [2023-08-26 08:03:15,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 536 places, 577 transitions, 1196 flow [2023-08-26 08:03:16,028 INFO L124 PetriNetUnfolderBase]: 171/1668 cut-off events. [2023-08-26 08:03:16,028 INFO L125 PetriNetUnfolderBase]: For 36/62 co-relation queries the response was YES. [2023-08-26 08:03:16,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 1668 events. 171/1668 cut-off events. For 36/62 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 12132 event pairs, 0 based on Foata normal form. 0/1393 useless extension candidates. Maximal degree in co-relation 855. Up to 16 conditions per place. [2023-08-26 08:03:16,180 INFO L119 LiptonReduction]: Number of co-enabled transitions 146418 [2023-08-26 08:04:03,719 WARN L234 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 289 DAG size of output: 287 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 08:04:30,733 WARN L234 SmtUtils]: Spent 24.41s on a formula simplification. DAG size of input: 289 DAG size of output: 287 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 08:04:36,463 WARN L234 SmtUtils]: Spent 5.73s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 08:04:36,488 INFO L134 LiptonReduction]: Checked pairs total: 912926 [2023-08-26 08:04:36,488 INFO L136 LiptonReduction]: Total number of compositions: 407 [2023-08-26 08:04:36,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 08:04:36,503 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;@283cab0c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 08:04:36,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-08-26 08:04:36,505 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 08:04:36,505 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 08:04:36,505 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 08:04:36,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:04:36,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 08:04:36,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE, t3_funErr8ASSERT_VIOLATIONASSERT, t1_funErr5ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-08-26 08:04:36,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:04:36,511 INFO L85 PathProgramCache]: Analyzing trace with hash 2125, now seen corresponding path program 1 times [2023-08-26 08:04:36,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:04:36,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854901424] [2023-08-26 08:04:36,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:04:36,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:04:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:04:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:04:36,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:04:36,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854901424] [2023-08-26 08:04:36,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854901424] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:04:36,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:04:36,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 08:04:36,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142308784] [2023-08-26 08:04:36,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:04:36,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 08:04:36,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:04:36,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 08:04:36,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 08:04:36,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 984 [2023-08-26 08:04:36,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 267 transitions, 576 flow. Second operand has 2 states, 2 states have (on average 531.5) internal successors, (1063), 2 states have internal predecessors, (1063), 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) [2023-08-26 08:04:36,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:04:36,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 984 [2023-08-26 08:04:36,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:05:46,045 INFO L124 PetriNetUnfolderBase]: 409790/781636 cut-off events. [2023-08-26 08:05:46,045 INFO L125 PetriNetUnfolderBase]: For 7569/7569 co-relation queries the response was YES. [2023-08-26 08:05:48,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329689 conditions, 781636 events. 409790/781636 cut-off events. For 7569/7569 co-relation queries the response was YES. Maximal size of possible extension queue 13547. Compared 10059181 event pairs, 375210 based on Foata normal form. 72287/738469 useless extension candidates. Maximal degree in co-relation 1248705. Up to 542401 conditions per place. [2023-08-26 08:05:51,511 INFO L140 encePairwiseOnDemand]: 952/984 looper letters, 99 selfloop transitions, 0 changer transitions 0/235 dead transitions. [2023-08-26 08:05:51,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 235 transitions, 710 flow [2023-08-26 08:05:51,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 08:05:51,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 08:05:51,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1193 transitions. [2023-08-26 08:05:51,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6061991869918699 [2023-08-26 08:05:51,527 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1193 transitions. [2023-08-26 08:05:51,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1193 transitions. [2023-08-26 08:05:51,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:05:51,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1193 transitions. [2023-08-26 08:05:51,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 596.5) internal successors, (1193), 2 states have internal predecessors, (1193), 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) [2023-08-26 08:05:51,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 984.0) internal successors, (2952), 3 states have internal predecessors, (2952), 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) [2023-08-26 08:05:51,549 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 984.0) internal successors, (2952), 3 states have internal predecessors, (2952), 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) [2023-08-26 08:05:51,550 INFO L175 Difference]: Start difference. First operand has 237 places, 267 transitions, 576 flow. Second operand 2 states and 1193 transitions. [2023-08-26 08:05:51,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 235 transitions, 710 flow [2023-08-26 08:05:52,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 235 transitions, 710 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 08:05:52,737 INFO L231 Difference]: Finished difference. Result has 229 places, 235 transitions, 512 flow [2023-08-26 08:05:52,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=984, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=512, PETRI_PLACES=229, PETRI_TRANSITIONS=235} [2023-08-26 08:05:52,742 INFO L281 CegarLoopForPetriNet]: 237 programPoint places, -8 predicate places. [2023-08-26 08:05:52,742 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 235 transitions, 512 flow [2023-08-26 08:05:52,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 531.5) internal successors, (1063), 2 states have internal predecessors, (1063), 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) [2023-08-26 08:05:52,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:05:52,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 08:05:52,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 08:05:52,744 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE, t3_funErr8ASSERT_VIOLATIONASSERT, t1_funErr5ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-08-26 08:05:52,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:05:52,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1486601161, now seen corresponding path program 1 times [2023-08-26 08:05:52,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:05:52,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555121008] [2023-08-26 08:05:52,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:05:52,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:05:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:05:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:05:52,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:05:52,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555121008] [2023-08-26 08:05:52,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555121008] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:05:52,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:05:52,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 08:05:52,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268434411] [2023-08-26 08:05:52,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:05:52,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:05:52,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:05:52,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:05:52,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:05:52,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 523 out of 984 [2023-08-26 08:05:52,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 235 transitions, 512 flow. Second operand has 3 states, 3 states have (on average 524.6666666666666) internal successors, (1574), 3 states have internal predecessors, (1574), 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) [2023-08-26 08:05:52,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:05:52,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 523 of 984 [2023-08-26 08:05:52,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:07:00,590 INFO L124 PetriNetUnfolderBase]: 405657/779065 cut-off events. [2023-08-26 08:07:00,590 INFO L125 PetriNetUnfolderBase]: For 10430/10430 co-relation queries the response was YES. [2023-08-26 08:07:03,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1321136 conditions, 779065 events. 405657/779065 cut-off events. For 10430/10430 co-relation queries the response was YES. Maximal size of possible extension queue 13187. Compared 10100040 event pairs, 247296 based on Foata normal form. 0/670756 useless extension candidates. Maximal degree in co-relation 1321130. Up to 536325 conditions per place. [2023-08-26 08:07:06,302 INFO L140 encePairwiseOnDemand]: 981/984 looper letters, 114 selfloop transitions, 2 changer transitions 0/252 dead transitions. [2023-08-26 08:07:06,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 252 transitions, 778 flow [2023-08-26 08:07:06,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:07:06,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:07:06,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1686 transitions. [2023-08-26 08:07:06,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5711382113821138 [2023-08-26 08:07:06,309 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1686 transitions. [2023-08-26 08:07:06,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1686 transitions. [2023-08-26 08:07:06,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:07:06,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1686 transitions. [2023-08-26 08:07:06,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 562.0) internal successors, (1686), 3 states have internal predecessors, (1686), 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) [2023-08-26 08:07:06,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 984.0) internal successors, (3936), 4 states have internal predecessors, (3936), 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) [2023-08-26 08:07:06,323 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 984.0) internal successors, (3936), 4 states have internal predecessors, (3936), 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) [2023-08-26 08:07:06,323 INFO L175 Difference]: Start difference. First operand has 229 places, 235 transitions, 512 flow. Second operand 3 states and 1686 transitions. [2023-08-26 08:07:06,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 252 transitions, 778 flow [2023-08-26 08:07:06,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 252 transitions, 778 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 08:07:06,365 INFO L231 Difference]: Finished difference. Result has 232 places, 235 transitions, 520 flow [2023-08-26 08:07:06,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=984, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=520, PETRI_PLACES=232, PETRI_TRANSITIONS=235} [2023-08-26 08:07:06,366 INFO L281 CegarLoopForPetriNet]: 237 programPoint places, -5 predicate places. [2023-08-26 08:07:06,366 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 235 transitions, 520 flow [2023-08-26 08:07:06,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 524.6666666666666) internal successors, (1574), 3 states have internal predecessors, (1574), 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) [2023-08-26 08:07:06,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:07:06,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:07:06,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 08:07:06,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE, t3_funErr8ASSERT_VIOLATIONASSERT, t1_funErr5ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-08-26 08:07:06,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:07:06,368 INFO L85 PathProgramCache]: Analyzing trace with hash 248594873, now seen corresponding path program 1 times [2023-08-26 08:07:06,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:07:06,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139332374] [2023-08-26 08:07:06,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:07:06,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:07:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:07:06,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:07:06,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:07:06,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139332374] [2023-08-26 08:07:06,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139332374] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 08:07:06,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398695824] [2023-08-26 08:07:06,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:07:06,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:07:06,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 08:07:06,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 08:07:06,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 08:07:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:07:06,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 08:07:06,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 08:07:06,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 08:07:06,678 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 08:07:06,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398695824] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:07:06,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 08:07:06,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-26 08:07:06,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68703068] [2023-08-26 08:07:06,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:07:06,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:07:06,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:07:06,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:07:06,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 08:07:06,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 516 out of 984 [2023-08-26 08:07:06,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 235 transitions, 520 flow. Second operand has 3 states, 3 states have (on average 519.0) internal successors, (1557), 3 states have internal predecessors, (1557), 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) [2023-08-26 08:07:06,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:07:06,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 516 of 984 [2023-08-26 08:07:06,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:08:15,662 INFO L124 PetriNetUnfolderBase]: 405657/764578 cut-off events. [2023-08-26 08:08:15,662 INFO L125 PetriNetUnfolderBase]: For 7802/7802 co-relation queries the response was YES. [2023-08-26 08:08:18,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1306565 conditions, 764578 events. 405657/764578 cut-off events. For 7802/7802 co-relation queries the response was YES. Maximal size of possible extension queue 12977. Compared 9712349 event pairs, 372066 based on Foata normal form. 0/652522 useless extension candidates. Maximal degree in co-relation 1306557. Up to 536343 conditions per place. [2023-08-26 08:08:21,597 INFO L140 encePairwiseOnDemand]: 980/984 looper letters, 98 selfloop transitions, 1 changer transitions 0/232 dead transitions. [2023-08-26 08:08:21,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 232 transitions, 712 flow [2023-08-26 08:08:21,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:08:21,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:08:21,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1650 transitions. [2023-08-26 08:08:21,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5589430894308943 [2023-08-26 08:08:21,602 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1650 transitions. [2023-08-26 08:08:21,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1650 transitions. [2023-08-26 08:08:21,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:08:21,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1650 transitions. [2023-08-26 08:08:21,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 550.0) internal successors, (1650), 3 states have internal predecessors, (1650), 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) [2023-08-26 08:08:21,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 984.0) internal successors, (3936), 4 states have internal predecessors, (3936), 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) [2023-08-26 08:08:21,615 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 984.0) internal successors, (3936), 4 states have internal predecessors, (3936), 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) [2023-08-26 08:08:21,615 INFO L175 Difference]: Start difference. First operand has 232 places, 235 transitions, 520 flow. Second operand 3 states and 1650 transitions. [2023-08-26 08:08:21,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 232 transitions, 712 flow [2023-08-26 08:08:22,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 232 transitions, 708 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 08:08:22,847 INFO L231 Difference]: Finished difference. Result has 229 places, 232 transitions, 512 flow [2023-08-26 08:08:22,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=984, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=512, PETRI_PLACES=229, PETRI_TRANSITIONS=232} [2023-08-26 08:08:22,848 INFO L281 CegarLoopForPetriNet]: 237 programPoint places, -8 predicate places. [2023-08-26 08:08:22,848 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 232 transitions, 512 flow [2023-08-26 08:08:22,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 519.0) internal successors, (1557), 3 states have internal predecessors, (1557), 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) [2023-08-26 08:08:22,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:08:22,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:08:22,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 08:08:23,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:08:23,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE, t3_funErr8ASSERT_VIOLATIONASSERT, t1_funErr5ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2023-08-26 08:08:23,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:08:23,051 INFO L85 PathProgramCache]: Analyzing trace with hash 574526696, now seen corresponding path program 1 times [2023-08-26 08:08:23,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:08:23,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052125523] [2023-08-26 08:08:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:08:23,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:08:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:08:23,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 08:08:23,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:08:23,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052125523] [2023-08-26 08:08:23,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052125523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:08:23,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:08:23,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 08:08:23,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523592845] [2023-08-26 08:08:23,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:08:23,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 08:08:23,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:08:23,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 08:08:23,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 08:08:23,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 984 [2023-08-26 08:08:23,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 232 transitions, 512 flow. Second operand has 6 states, 6 states have (on average 370.6666666666667) internal successors, (2224), 6 states have internal predecessors, (2224), 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) [2023-08-26 08:08:23,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:08:23,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 984 [2023-08-26 08:08:23,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand