/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_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 07:45:20,381 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 07:45:20,449 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 07:45:20,451 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 07:45:20,452 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 07:45:20,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 07:45:20,479 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 07:45:20,480 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 07:45:20,480 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 07:45:20,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 07:45:20,483 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 07:45:20,483 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 07:45:20,483 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 07:45:20,484 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 07:45:20,484 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 07:45:20,485 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 07:45:20,485 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 07:45:20,485 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 07:45:20,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 07:45:20,485 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 07:45:20,485 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 07:45:20,486 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 07:45:20,486 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 07:45:20,486 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 07:45:20,486 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 07:45:20,487 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 07:45:20,487 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 07:45:20,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:45:20,487 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 07:45:20,487 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 07:45:20,488 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 07:45:20,488 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 07:45:20,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 07:45:20,488 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 07:45:20,488 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 07:45:20,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 07:45:20,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 07:45:20,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 07:45:20,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 07:45:20,743 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 07:45:20,744 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 07:45:20,744 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_ok.i [2023-08-25 07:45:21,701 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 07:45:21,931 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 07:45:21,931 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok.i [2023-08-25 07:45:21,946 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90fff9d7b/0758006492fc4f41aff14f7e4a557275/FLAG623da7bb0 [2023-08-25 07:45:21,956 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90fff9d7b/0758006492fc4f41aff14f7e4a557275 [2023-08-25 07:45:21,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 07:45:21,959 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 07:45:21,961 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 07:45:21,961 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 07:45:21,963 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 07:45:21,963 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:45:21" (1/1) ... [2023-08-25 07:45:21,964 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d9533b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:21, skipping insertion in model container [2023-08-25 07:45:21,964 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:45:21" (1/1) ... [2023-08-25 07:45:22,007 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 07:45:22,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:45:22,399 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 07:45:22,420 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [258] [2023-08-25 07:45:22,421 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [258] [2023-08-25 07:45:22,425 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [750] [2023-08-25 07:45:22,439 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:45:22,483 INFO L206 MainTranslator]: Completed translation [2023-08-25 07:45:22,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:22 WrapperNode [2023-08-25 07:45:22,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 07:45:22,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 07:45:22,484 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 07:45:22,484 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 07:45:22,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:22" (1/1) ... [2023-08-25 07:45:22,516 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:22" (1/1) ... [2023-08-25 07:45:22,566 INFO L138 Inliner]: procedures = 274, calls = 59, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 394 [2023-08-25 07:45:22,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 07:45:22,567 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 07:45:22,567 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 07:45:22,567 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 07:45:22,575 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:22" (1/1) ... [2023-08-25 07:45:22,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:22" (1/1) ... [2023-08-25 07:45:22,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:22" (1/1) ... [2023-08-25 07:45:22,589 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:22" (1/1) ... [2023-08-25 07:45:22,620 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:22" (1/1) ... [2023-08-25 07:45:22,623 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:22" (1/1) ... [2023-08-25 07:45:22,625 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:22" (1/1) ... [2023-08-25 07:45:22,626 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:22" (1/1) ... [2023-08-25 07:45:22,629 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 07:45:22,629 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 07:45:22,630 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 07:45:22,630 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 07:45:22,630 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:22" (1/1) ... [2023-08-25 07:45:22,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:45:22,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:45:22,660 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 07:45:22,666 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 07:45:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-25 07:45:22,687 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-25 07:45:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-25 07:45:22,687 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-25 07:45:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 07:45:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 07:45:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 07:45:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 07:45:22,688 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 07:45:22,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 07:45:22,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 07:45:22,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 07:45:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 07:45:22,689 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 07:45:22,833 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 07:45:22,835 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 07:45:23,236 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 07:45:23,243 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 07:45:23,243 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 07:45:23,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:45:23 BoogieIcfgContainer [2023-08-25 07:45:23,244 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 07:45:23,246 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 07:45:23,246 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 07:45:23,247 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 07:45:23,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:45:21" (1/3) ... [2023-08-25 07:45:23,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6e44b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:45:23, skipping insertion in model container [2023-08-25 07:45:23,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:45:22" (2/3) ... [2023-08-25 07:45:23,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6e44b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:45:23, skipping insertion in model container [2023-08-25 07:45:23,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:45:23" (3/3) ... [2023-08-25 07:45:23,250 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok.i [2023-08-25 07:45:23,260 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 07:45:23,260 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2023-08-25 07:45:23,260 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 07:45:23,366 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 07:45:23,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 444 transitions, 904 flow [2023-08-25 07:45:23,578 INFO L124 PetriNetUnfolderBase]: 15/442 cut-off events. [2023-08-25 07:45:23,578 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 07:45:23,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 442 events. 15/442 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 802 event pairs, 0 based on Foata normal form. 0/390 useless extension candidates. Maximal degree in co-relation 315. Up to 3 conditions per place. [2023-08-25 07:45:23,589 INFO L82 GeneralOperation]: Start removeDead. Operand has 436 places, 444 transitions, 904 flow [2023-08-25 07:45:23,597 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 425 places, 433 transitions, 875 flow [2023-08-25 07:45:23,600 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 07:45:23,609 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 425 places, 433 transitions, 875 flow [2023-08-25 07:45:23,611 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 425 places, 433 transitions, 875 flow [2023-08-25 07:45:23,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 433 transitions, 875 flow [2023-08-25 07:45:23,671 INFO L124 PetriNetUnfolderBase]: 15/433 cut-off events. [2023-08-25 07:45:23,672 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 07:45:23,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 433 events. 15/433 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 730 event pairs, 0 based on Foata normal form. 0/381 useless extension candidates. Maximal degree in co-relation 315. Up to 3 conditions per place. [2023-08-25 07:45:23,691 INFO L119 LiptonReduction]: Number of co-enabled transitions 52968 [2023-08-25 07:45:39,173 WARN L234 SmtUtils]: Spent 7.32s on a formula simplification. DAG size of input: 129 DAG size of output: 126 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 07:45:53,551 WARN L234 SmtUtils]: Spent 11.73s on a formula simplification. DAG size of input: 139 DAG size of output: 134 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 07:46:22,515 WARN L234 SmtUtils]: Spent 23.55s on a formula simplification. DAG size of input: 235 DAG size of output: 224 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 07:46:51,568 WARN L234 SmtUtils]: Spent 27.69s on a formula simplification. DAG size of input: 242 DAG size of output: 231 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 07:47:04,313 WARN L234 SmtUtils]: Spent 12.74s on a formula simplification that was a NOOP. DAG size: 219 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 07:47:04,332 INFO L134 LiptonReduction]: Checked pairs total: 425992 [2023-08-25 07:47:04,332 INFO L136 LiptonReduction]: Total number of compositions: 308 [2023-08-25 07:47:04,345 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 07:47:04,348 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@17ef07bc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 07:47:04,349 INFO L358 AbstractCegarLoop]: Starting to check reachability of 66 error locations. [2023-08-25 07:47:04,350 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 07:47:04,350 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 07:47:04,350 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:47:04,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:47:04,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 07:47:04,351 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:47:04,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:47:04,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1578, now seen corresponding path program 1 times [2023-08-25 07:47:04,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:47:04,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332220825] [2023-08-25 07:47:04,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:47:04,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:47:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:47:04,445 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 07:47:04,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:47:04,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332220825] [2023-08-25 07:47:04,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332220825] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:47:04,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:47:04,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 07:47:04,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046128638] [2023-08-25 07:47:04,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:47:04,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 07:47:04,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:47:04,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 07:47:04,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 07:47:04,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 431 out of 752 [2023-08-25 07:47:04,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 206 transitions, 421 flow. Second operand has 2 states, 2 states have (on average 431.5) internal successors, (863), 2 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:04,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:47:04,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 431 of 752 [2023-08-25 07:47:04,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:47:05,153 INFO L124 PetriNetUnfolderBase]: 2398/7544 cut-off events. [2023-08-25 07:47:05,154 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2023-08-25 07:47:05,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11480 conditions, 7544 events. 2398/7544 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 63457 event pairs, 2022 based on Foata normal form. 52/6993 useless extension candidates. Maximal degree in co-relation 11034. Up to 3854 conditions per place. [2023-08-25 07:47:05,194 INFO L140 encePairwiseOnDemand]: 743/752 looper letters, 64 selfloop transitions, 0 changer transitions 0/197 dead transitions. [2023-08-25 07:47:05,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 197 transitions, 531 flow [2023-08-25 07:47:05,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 07:47:05,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 07:47:05,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 935 transitions. [2023-08-25 07:47:05,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216755319148937 [2023-08-25 07:47:05,210 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 935 transitions. [2023-08-25 07:47:05,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 935 transitions. [2023-08-25 07:47:05,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:47:05,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 935 transitions. [2023-08-25 07:47:05,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 467.5) internal successors, (935), 2 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:05,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 752.0) internal successors, (2256), 3 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:05,224 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 752.0) internal successors, (2256), 3 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:05,225 INFO L175 Difference]: Start difference. First operand has 205 places, 206 transitions, 421 flow. Second operand 2 states and 935 transitions. [2023-08-25 07:47:05,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 197 transitions, 531 flow [2023-08-25 07:47:05,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 197 transitions, 526 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 07:47:05,232 INFO L231 Difference]: Finished difference. Result has 195 places, 197 transitions, 398 flow [2023-08-25 07:47:05,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=398, PETRI_PLACES=195, PETRI_TRANSITIONS=197} [2023-08-25 07:47:05,236 INFO L281 CegarLoopForPetriNet]: 205 programPoint places, -10 predicate places. [2023-08-25 07:47:05,236 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 197 transitions, 398 flow [2023-08-25 07:47:05,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 431.5) internal successors, (863), 2 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:05,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:47:05,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 07:47:05,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 07:47:05,237 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:47:05,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:47:05,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1506183822, now seen corresponding path program 1 times [2023-08-25 07:47:05,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:47:05,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289314294] [2023-08-25 07:47:05,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:47:05,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:47:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:47:05,391 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 07:47:05,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:47:05,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289314294] [2023-08-25 07:47:05,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289314294] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:47:05,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:47:05,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:47:05,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533261950] [2023-08-25 07:47:05,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:47:05,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:47:05,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:47:05,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:47:05,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:47:05,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 752 [2023-08-25 07:47:05,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 197 transitions, 398 flow. Second operand has 3 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:05,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:47:05,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 752 [2023-08-25 07:47:05,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:47:06,370 INFO L124 PetriNetUnfolderBase]: 3306/9643 cut-off events. [2023-08-25 07:47:06,371 INFO L125 PetriNetUnfolderBase]: For 24/76 co-relation queries the response was YES. [2023-08-25 07:47:06,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15090 conditions, 9643 events. 3306/9643 cut-off events. For 24/76 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 83553 event pairs, 728 based on Foata normal form. 2/8634 useless extension candidates. Maximal degree in co-relation 15087. Up to 3776 conditions per place. [2023-08-25 07:47:06,414 INFO L140 encePairwiseOnDemand]: 747/752 looper letters, 127 selfloop transitions, 4 changer transitions 0/258 dead transitions. [2023-08-25 07:47:06,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 258 transitions, 785 flow [2023-08-25 07:47:06,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:47:06,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:47:06,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1389 transitions. [2023-08-25 07:47:06,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6156914893617021 [2023-08-25 07:47:06,417 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1389 transitions. [2023-08-25 07:47:06,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1389 transitions. [2023-08-25 07:47:06,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:47:06,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1389 transitions. [2023-08-25 07:47:06,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 463.0) internal successors, (1389), 3 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:06,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:06,423 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:06,424 INFO L175 Difference]: Start difference. First operand has 195 places, 197 transitions, 398 flow. Second operand 3 states and 1389 transitions. [2023-08-25 07:47:06,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 258 transitions, 785 flow [2023-08-25 07:47:06,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 258 transitions, 785 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:47:06,429 INFO L231 Difference]: Finished difference. Result has 199 places, 200 transitions, 428 flow [2023-08-25 07:47:06,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=428, PETRI_PLACES=199, PETRI_TRANSITIONS=200} [2023-08-25 07:47:06,432 INFO L281 CegarLoopForPetriNet]: 205 programPoint places, -6 predicate places. [2023-08-25 07:47:06,433 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 200 transitions, 428 flow [2023-08-25 07:47:06,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:06,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:47:06,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:47:06,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 07:47:06,438 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:47:06,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:47:06,438 INFO L85 PathProgramCache]: Analyzing trace with hash 60779051, now seen corresponding path program 1 times [2023-08-25 07:47:06,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:47:06,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358494706] [2023-08-25 07:47:06,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:47:06,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:47:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:47:06,512 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 07:47:06,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:47:06,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358494706] [2023-08-25 07:47:06,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358494706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:47:06,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:47:06,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:47:06,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897138841] [2023-08-25 07:47:06,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:47:06,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:47:06,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:47:06,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:47:06,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:47:06,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 752 [2023-08-25 07:47:06,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 200 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:06,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:47:06,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 752 [2023-08-25 07:47:06,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:47:07,406 INFO L124 PetriNetUnfolderBase]: 3504/10789 cut-off events. [2023-08-25 07:47:07,406 INFO L125 PetriNetUnfolderBase]: For 343/343 co-relation queries the response was YES. [2023-08-25 07:47:07,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16922 conditions, 10789 events. 3504/10789 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 97874 event pairs, 889 based on Foata normal form. 0/9778 useless extension candidates. Maximal degree in co-relation 16917. Up to 3715 conditions per place. [2023-08-25 07:47:07,441 INFO L140 encePairwiseOnDemand]: 747/752 looper letters, 128 selfloop transitions, 4 changer transitions 0/259 dead transitions. [2023-08-25 07:47:07,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 259 transitions, 815 flow [2023-08-25 07:47:07,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:47:07,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:47:07,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1388 transitions. [2023-08-25 07:47:07,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6152482269503546 [2023-08-25 07:47:07,444 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1388 transitions. [2023-08-25 07:47:07,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1388 transitions. [2023-08-25 07:47:07,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:47:07,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1388 transitions. [2023-08-25 07:47:07,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 462.6666666666667) internal successors, (1388), 3 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:07,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:07,451 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:07,451 INFO L175 Difference]: Start difference. First operand has 199 places, 200 transitions, 428 flow. Second operand 3 states and 1388 transitions. [2023-08-25 07:47:07,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 259 transitions, 815 flow [2023-08-25 07:47:07,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 259 transitions, 805 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:47:07,455 INFO L231 Difference]: Finished difference. Result has 201 places, 203 transitions, 450 flow [2023-08-25 07:47:07,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=450, PETRI_PLACES=201, PETRI_TRANSITIONS=203} [2023-08-25 07:47:07,457 INFO L281 CegarLoopForPetriNet]: 205 programPoint places, -4 predicate places. [2023-08-25 07:47:07,457 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 203 transitions, 450 flow [2023-08-25 07:47:07,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:07,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:47:07,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:47:07,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 07:47:07,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:47:07,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:47:07,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1447325851, now seen corresponding path program 1 times [2023-08-25 07:47:07,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:47:07,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144454585] [2023-08-25 07:47:07,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:47:07,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:47:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:47:07,512 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 07:47:07,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:47:07,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144454585] [2023-08-25 07:47:07,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144454585] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:47:07,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:47:07,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:47:07,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755221468] [2023-08-25 07:47:07,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:47:07,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:47:07,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:47:07,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:47:07,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:47:07,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 752 [2023-08-25 07:47:07,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 203 transitions, 450 flow. Second operand has 3 states, 3 states have (on average 420.0) internal successors, (1260), 3 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:07,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:47:07,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 752 [2023-08-25 07:47:07,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:47:08,833 INFO L124 PetriNetUnfolderBase]: 5492/16081 cut-off events. [2023-08-25 07:47:08,833 INFO L125 PetriNetUnfolderBase]: For 841/841 co-relation queries the response was YES. [2023-08-25 07:47:08,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25960 conditions, 16081 events. 5492/16081 cut-off events. For 841/841 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 149195 event pairs, 2886 based on Foata normal form. 0/14688 useless extension candidates. Maximal degree in co-relation 25954. Up to 5372 conditions per place. [2023-08-25 07:47:08,898 INFO L140 encePairwiseOnDemand]: 749/752 looper letters, 125 selfloop transitions, 2 changer transitions 0/259 dead transitions. [2023-08-25 07:47:08,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 259 transitions, 828 flow [2023-08-25 07:47:08,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:47:08,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:47:08,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1379 transitions. [2023-08-25 07:47:08,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6112588652482269 [2023-08-25 07:47:08,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1379 transitions. [2023-08-25 07:47:08,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1379 transitions. [2023-08-25 07:47:08,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:47:08,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1379 transitions. [2023-08-25 07:47:08,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 459.6666666666667) internal successors, (1379), 3 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:08,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:08,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:08,907 INFO L175 Difference]: Start difference. First operand has 201 places, 203 transitions, 450 flow. Second operand 3 states and 1379 transitions. [2023-08-25 07:47:08,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 259 transitions, 828 flow [2023-08-25 07:47:08,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 259 transitions, 816 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:47:08,911 INFO L231 Difference]: Finished difference. Result has 202 places, 204 transitions, 454 flow [2023-08-25 07:47:08,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=202, PETRI_TRANSITIONS=204} [2023-08-25 07:47:08,912 INFO L281 CegarLoopForPetriNet]: 205 programPoint places, -3 predicate places. [2023-08-25 07:47:08,912 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 204 transitions, 454 flow [2023-08-25 07:47:08,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 420.0) internal successors, (1260), 3 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:08,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:47:08,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:47:08,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 07:47:08,913 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:47:08,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:47:08,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1979399093, now seen corresponding path program 1 times [2023-08-25 07:47:08,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:47:08,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089894887] [2023-08-25 07:47:08,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:47:08,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:47:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:47:09,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:47:09,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:47:09,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089894887] [2023-08-25 07:47:09,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089894887] 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 [921900304] [2023-08-25 07:47:09,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:47:09,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:47:09,234 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 07:47:09,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 752 [2023-08-25 07:47:09,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 204 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 264.6666666666667) internal successors, (1588), 6 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:09,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:47:09,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 752 [2023-08-25 07:47:09,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:47:42,446 INFO L124 PetriNetUnfolderBase]: 280881/439237 cut-off events. [2023-08-25 07:47:42,446 INFO L125 PetriNetUnfolderBase]: For 11243/11243 co-relation queries the response was YES. [2023-08-25 07:47:43,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885128 conditions, 439237 events. 280881/439237 cut-off events. For 11243/11243 co-relation queries the response was YES. Maximal size of possible extension queue 2530. Compared 3673261 event pairs, 108880 based on Foata normal form. 0/379779 useless extension candidates. Maximal degree in co-relation 885121. Up to 269755 conditions per place. [2023-08-25 07:47:44,724 INFO L140 encePairwiseOnDemand]: 714/752 looper letters, 698 selfloop transitions, 133 changer transitions 0/856 dead transitions. [2023-08-25 07:47:44,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 856 transitions, 3517 flow [2023-08-25 07:47:44,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:47:44,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:47:44,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2390 transitions. [2023-08-25 07:47:44,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5296985815602837 [2023-08-25 07:47:44,730 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2390 transitions. [2023-08-25 07:47:44,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2390 transitions. [2023-08-25 07:47:44,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:47:44,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2390 transitions. [2023-08-25 07:47:44,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 398.3333333333333) internal successors, (2390), 6 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:44,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 752.0) internal successors, (5264), 7 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:44,741 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 752.0) internal successors, (5264), 7 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:44,741 INFO L175 Difference]: Start difference. First operand has 202 places, 204 transitions, 454 flow. Second operand 6 states and 2390 transitions. [2023-08-25 07:47:44,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 856 transitions, 3517 flow [2023-08-25 07:47:44,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 856 transitions, 3507 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 07:47:44,776 INFO L231 Difference]: Finished difference. Result has 211 places, 336 transitions, 1322 flow [2023-08-25 07:47:44,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1322, PETRI_PLACES=211, PETRI_TRANSITIONS=336} [2023-08-25 07:47:44,778 INFO L281 CegarLoopForPetriNet]: 205 programPoint places, 6 predicate places. [2023-08-25 07:47:44,778 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 336 transitions, 1322 flow [2023-08-25 07:47:44,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 264.6666666666667) internal successors, (1588), 6 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:44,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:47:44,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:47:44,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 07:47:44,779 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err13ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:47:44,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:47:44,779 INFO L85 PathProgramCache]: Analyzing trace with hash -154006782, now seen corresponding path program 1 times [2023-08-25 07:47:44,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:47:44,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164619358] [2023-08-25 07:47:44,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:47:44,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:47:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:47:44,819 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 07:47:44,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:47:44,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164619358] [2023-08-25 07:47:44,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164619358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:47:44,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:47:44,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:47:44,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094362303] [2023-08-25 07:47:44,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:47:44,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:47:44,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:47:44,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:47:44,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:47:44,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 752 [2023-08-25 07:47:44,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 336 transitions, 1322 flow. Second operand has 3 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:44,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:47:44,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 752 [2023-08-25 07:47:44,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:47:58,127 INFO L124 PetriNetUnfolderBase]: 58012/147969 cut-off events. [2023-08-25 07:47:58,127 INFO L125 PetriNetUnfolderBase]: For 35700/44439 co-relation queries the response was YES. [2023-08-25 07:47:58,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305519 conditions, 147969 events. 58012/147969 cut-off events. For 35700/44439 co-relation queries the response was YES. Maximal size of possible extension queue 1734. Compared 1819412 event pairs, 19276 based on Foata normal form. 4/138074 useless extension candidates. Maximal degree in co-relation 305508. Up to 44474 conditions per place. [2023-08-25 07:47:59,324 INFO L140 encePairwiseOnDemand]: 748/752 looper letters, 169 selfloop transitions, 3 changer transitions 0/414 dead transitions. [2023-08-25 07:47:59,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 414 transitions, 1923 flow [2023-08-25 07:47:59,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:47:59,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:47:59,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1382 transitions. [2023-08-25 07:47:59,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6125886524822695 [2023-08-25 07:47:59,327 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1382 transitions. [2023-08-25 07:47:59,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1382 transitions. [2023-08-25 07:47:59,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:47:59,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1382 transitions. [2023-08-25 07:47:59,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 460.6666666666667) internal successors, (1382), 3 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:59,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:59,333 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:47:59,333 INFO L175 Difference]: Start difference. First operand has 211 places, 336 transitions, 1322 flow. Second operand 3 states and 1382 transitions. [2023-08-25 07:47:59,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 414 transitions, 1923 flow [2023-08-25 07:48:02,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 414 transitions, 1923 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:48:02,440 INFO L231 Difference]: Finished difference. Result has 214 places, 338 transitions, 1341 flow [2023-08-25 07:48:02,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1341, PETRI_PLACES=214, PETRI_TRANSITIONS=338} [2023-08-25 07:48:02,441 INFO L281 CegarLoopForPetriNet]: 205 programPoint places, 9 predicate places. [2023-08-25 07:48:02,441 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 338 transitions, 1341 flow [2023-08-25 07:48:02,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:48:02,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:48:02,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:48:02,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 07:48:02,442 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:48:02,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:48:02,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1387798132, now seen corresponding path program 1 times [2023-08-25 07:48:02,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:48:02,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370487104] [2023-08-25 07:48:02,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:48:02,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:48:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:48:02,653 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 07:48:02,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:48:02,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370487104] [2023-08-25 07:48:02,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370487104] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:48:02,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:48:02,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:48:02,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134535773] [2023-08-25 07:48:02,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:48:02,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:48:02,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:48:02,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:48:02,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:48:02,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 752 [2023-08-25 07:48:02,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 338 transitions, 1341 flow. Second operand has 6 states, 6 states have (on average 260.6666666666667) internal successors, (1564), 6 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:48:02,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:48:02,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 752 [2023-08-25 07:48:02,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand