/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 04:17:38,342 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 04:17:38,409 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 04:17:38,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 04:17:38,414 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 04:17:38,452 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 04:17:38,453 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 04:17:38,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 04:17:38,454 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 04:17:38,455 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 04:17:38,456 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 04:17:38,456 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 04:17:38,456 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 04:17:38,456 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 04:17:38,457 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 04:17:38,457 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 04:17:38,457 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 04:17:38,458 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 04:17:38,458 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 04:17:38,458 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 04:17:38,458 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 04:17:38,459 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 04:17:38,459 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 04:17:38,460 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 04:17:38,460 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 04:17:38,460 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 04:17:38,460 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 04:17:38,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 04:17:38,461 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 04:17:38,461 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 04:17:38,462 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 04:17:38,462 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 04:17:38,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 04:17:38,463 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 04:17:38,463 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 04:17:38,463 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 04:17:38,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 04:17:38,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 04:17:38,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 04:17:38,787 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 04:17:38,787 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 04:17:38,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i [2023-08-25 04:17:40,041 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 04:17:40,391 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 04:17:40,392 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i [2023-08-25 04:17:40,412 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79e6ebaa0/292c6168170946c1b9e93191715eca79/FLAGe6380f7b6 [2023-08-25 04:17:40,428 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79e6ebaa0/292c6168170946c1b9e93191715eca79 [2023-08-25 04:17:40,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 04:17:40,435 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 04:17:40,435 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 04:17:40,436 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 04:17:40,438 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 04:17:40,440 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:17:40" (1/1) ... [2023-08-25 04:17:40,440 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3607b8c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:17:40, skipping insertion in model container [2023-08-25 04:17:40,441 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:17:40" (1/1) ... [2023-08-25 04:17:40,495 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 04:17:40,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 04:17:40,933 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 04:17:40,949 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-25 04:17:40,951 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-25 04:17:41,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 04:17:41,099 INFO L206 MainTranslator]: Completed translation [2023-08-25 04:17:41,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:17:41 WrapperNode [2023-08-25 04:17:41,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 04:17:41,101 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 04:17:41,101 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 04:17:41,101 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 04:17:41,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:17:41" (1/1) ... [2023-08-25 04:17:41,146 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:17:41" (1/1) ... [2023-08-25 04:17:41,206 INFO L138 Inliner]: procedures = 279, calls = 87, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 534 [2023-08-25 04:17:41,207 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 04:17:41,207 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 04:17:41,207 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 04:17:41,208 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 04:17:41,215 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:17:41" (1/1) ... [2023-08-25 04:17:41,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:17:41" (1/1) ... [2023-08-25 04:17:41,228 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:17:41" (1/1) ... [2023-08-25 04:17:41,228 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:17:41" (1/1) ... [2023-08-25 04:17:41,274 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:17:41" (1/1) ... [2023-08-25 04:17:41,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:17:41" (1/1) ... [2023-08-25 04:17:41,302 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:17:41" (1/1) ... [2023-08-25 04:17:41,307 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:17:41" (1/1) ... [2023-08-25 04:17:41,320 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 04:17:41,321 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 04:17:41,321 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 04:17:41,321 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 04:17:41,322 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:17:41" (1/1) ... [2023-08-25 04:17:41,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 04:17:41,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:17:41,354 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 04:17:41,378 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 04:17:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 04:17:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-25 04:17:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-25 04:17:41,393 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-25 04:17:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 04:17:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 04:17:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-25 04:17:41,395 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-25 04:17:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 04:17:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 04:17:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 04:17:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 04:17:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-25 04:17:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-25 04:17:41,395 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-25 04:17:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 04:17:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 04:17:41,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 04:17:41,399 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 04:17:41,591 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 04:17:41,592 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 04:17:42,394 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 04:17:42,403 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 04:17:42,403 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-08-25 04:17:42,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:17:42 BoogieIcfgContainer [2023-08-25 04:17:42,405 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 04:17:42,408 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 04:17:42,408 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 04:17:42,410 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 04:17:42,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 04:17:40" (1/3) ... [2023-08-25 04:17:42,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69caa660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:17:42, skipping insertion in model container [2023-08-25 04:17:42,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:17:41" (2/3) ... [2023-08-25 04:17:42,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69caa660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:17:42, skipping insertion in model container [2023-08-25 04:17:42,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:17:42" (3/3) ... [2023-08-25 04:17:42,413 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_85-list2_racefree.i [2023-08-25 04:17:42,429 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 04:17:42,430 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-08-25 04:17:42,431 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 04:17:42,606 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-25 04:17:42,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 536 places, 577 transitions, 1196 flow [2023-08-25 04:17:43,177 INFO L124 PetriNetUnfolderBase]: 171/1668 cut-off events. [2023-08-25 04:17:43,178 INFO L125 PetriNetUnfolderBase]: For 36/62 co-relation queries the response was YES. [2023-08-25 04:17:43,223 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. [2023-08-25 04:17:43,223 INFO L82 GeneralOperation]: Start removeDead. Operand has 536 places, 577 transitions, 1196 flow [2023-08-25 04:17:43,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 536 places, 577 transitions, 1196 flow [2023-08-25 04:17:43,254 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:17:43,266 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 536 places, 577 transitions, 1196 flow [2023-08-25 04:17:43,272 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 536 places, 577 transitions, 1196 flow [2023-08-25 04:17:43,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 536 places, 577 transitions, 1196 flow [2023-08-25 04:17:43,711 INFO L124 PetriNetUnfolderBase]: 171/1668 cut-off events. [2023-08-25 04:17:43,712 INFO L125 PetriNetUnfolderBase]: For 36/62 co-relation queries the response was YES. [2023-08-25 04:17:43,755 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. [2023-08-25 04:17:43,861 INFO L119 LiptonReduction]: Number of co-enabled transitions 146418 [2023-08-25 04:18:06,429 WARN L234 SmtUtils]: Spent 10.38s on a formula simplification. DAG size of input: 147 DAG size of output: 143 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 04:18:16,911 WARN L234 SmtUtils]: Spent 7.33s on a formula simplification. DAG size of input: 147 DAG size of output: 143 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 04:18:32,117 WARN L234 SmtUtils]: Spent 12.19s on a formula simplification. DAG size of input: 303 DAG size of output: 301 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 04:19:07,837 WARN L234 SmtUtils]: Spent 32.34s on a formula simplification. DAG size of input: 303 DAG size of output: 301 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 04:19:19,990 WARN L234 SmtUtils]: Spent 12.14s 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) [2023-08-25 04:19:20,006 INFO L134 LiptonReduction]: Checked pairs total: 850282 [2023-08-25 04:19:20,007 INFO L136 LiptonReduction]: Total number of compositions: 402 [2023-08-25 04:19:20,018 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:19:20,022 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;@7ef2747, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:19:20,022 INFO L358 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2023-08-25 04:19:20,023 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:19:20,023 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 04:19:20,024 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:19:20,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:19:20,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 04:19:20,025 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 04:19:20,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:19:20,029 INFO L85 PathProgramCache]: Analyzing trace with hash 2117, now seen corresponding path program 1 times [2023-08-25 04:19:20,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:19:20,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419200286] [2023-08-25 04:19:20,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:19:20,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:19:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:19:20,148 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 04:19:20,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:19:20,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419200286] [2023-08-25 04:19:20,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419200286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:19:20,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:19:20,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 04:19:20,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093219677] [2023-08-25 04:19:20,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:19:20,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 04:19:20,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:19:20,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 04:19:20,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 04:19:20,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 531 out of 979 [2023-08-25 04:19:20,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 269 transitions, 580 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) [2023-08-25 04:19:20,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:19:20,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 531 of 979 [2023-08-25 04:19:20,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:20:31,712 INFO L124 PetriNetUnfolderBase]: 434036/817496 cut-off events. [2023-08-25 04:20:31,712 INFO L125 PetriNetUnfolderBase]: For 7830/7830 co-relation queries the response was YES. [2023-08-25 04:20:34,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1397704 conditions, 817496 events. 434036/817496 cut-off events. For 7830/7830 co-relation queries the response was YES. Maximal size of possible extension queue 13619. Compared 10378005 event pairs, 398048 based on Foata normal form. 67966/761835 useless extension candidates. Maximal degree in co-relation 1316720. Up to 574346 conditions per place. [2023-08-25 04:20:38,157 INFO L140 encePairwiseOnDemand]: 948/979 looper letters, 100 selfloop transitions, 0 changer transitions 0/237 dead transitions. [2023-08-25 04:20:38,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 237 transitions, 716 flow [2023-08-25 04:20:38,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 04:20:38,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 04:20:38,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1193 transitions. [2023-08-25 04:20:38,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6092951991828396 [2023-08-25 04:20:38,173 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1193 transitions. [2023-08-25 04:20:38,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1193 transitions. [2023-08-25 04:20:38,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:20:38,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1193 transitions. [2023-08-25 04:20:38,185 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) [2023-08-25 04:20:38,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 979.0) internal successors, (2937), 3 states have internal predecessors, (2937), 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 04:20:38,194 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 979.0) internal successors, (2937), 3 states have internal predecessors, (2937), 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 04:20:38,195 INFO L175 Difference]: Start difference. First operand has 239 places, 269 transitions, 580 flow. Second operand 2 states and 1193 transitions. [2023-08-25 04:20:38,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 237 transitions, 716 flow [2023-08-25 04:20:40,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 237 transitions, 716 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:20:40,317 INFO L231 Difference]: Finished difference. Result has 231 places, 237 transitions, 516 flow [2023-08-25 04:20:40,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=979, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=516, PETRI_PLACES=231, PETRI_TRANSITIONS=237} [2023-08-25 04:20:40,322 INFO L281 CegarLoopForPetriNet]: 239 programPoint places, -8 predicate places. [2023-08-25 04:20:40,323 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 237 transitions, 516 flow [2023-08-25 04:20:40,324 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) [2023-08-25 04:20:40,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:20:40,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 04:20:40,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 04:20:40,324 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 04:20:40,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:20:40,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1599419740, now seen corresponding path program 1 times [2023-08-25 04:20:40,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:20:40,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783014237] [2023-08-25 04:20:40,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:20:40,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:20:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:20:40,590 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 04:20:40,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:20:40,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783014237] [2023-08-25 04:20:40,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783014237] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:20:40,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:20:40,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:20:40,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108340227] [2023-08-25 04:20:40,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:20:40,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:20:40,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:20:40,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:20:40,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:20:40,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 523 out of 979 [2023-08-25 04:20:40,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 237 transitions, 516 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) [2023-08-25 04:20:40,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:20:40,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 523 of 979 [2023-08-25 04:20:40,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:21:52,745 INFO L124 PetriNetUnfolderBase]: 429903/825296 cut-off events. [2023-08-25 04:21:52,746 INFO L125 PetriNetUnfolderBase]: For 10687/10687 co-relation queries the response was YES. [2023-08-25 04:21:55,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399533 conditions, 825296 events. 429903/825296 cut-off events. For 10687/10687 co-relation queries the response was YES. Maximal size of possible extension queue 13365. Compared 10677702 event pairs, 261816 based on Foata normal form. 0/711247 useless extension candidates. Maximal degree in co-relation 1399527. Up to 568269 conditions per place. [2023-08-25 04:21:59,078 INFO L140 encePairwiseOnDemand]: 976/979 looper letters, 116 selfloop transitions, 2 changer transitions 0/255 dead transitions. [2023-08-25 04:21:59,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 255 transitions, 788 flow [2023-08-25 04:21:59,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:21:59,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:21:59,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1688 transitions. [2023-08-25 04:21:59,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5747361252979231 [2023-08-25 04:21:59,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1688 transitions. [2023-08-25 04:21:59,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1688 transitions. [2023-08-25 04:21:59,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:21:59,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1688 transitions. [2023-08-25 04:21:59,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 562.6666666666666) internal successors, (1688), 3 states have internal predecessors, (1688), 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 04:21:59,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 979.0) internal successors, (3916), 4 states have internal predecessors, (3916), 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 04:21:59,095 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 979.0) internal successors, (3916), 4 states have internal predecessors, (3916), 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 04:21:59,095 INFO L175 Difference]: Start difference. First operand has 231 places, 237 transitions, 516 flow. Second operand 3 states and 1688 transitions. [2023-08-25 04:21:59,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 255 transitions, 788 flow [2023-08-25 04:21:59,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 255 transitions, 788 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:21:59,125 INFO L231 Difference]: Finished difference. Result has 234 places, 237 transitions, 524 flow [2023-08-25 04:21:59,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=979, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=524, PETRI_PLACES=234, PETRI_TRANSITIONS=237} [2023-08-25 04:21:59,126 INFO L281 CegarLoopForPetriNet]: 239 programPoint places, -5 predicate places. [2023-08-25 04:21:59,127 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 237 transitions, 524 flow [2023-08-25 04:21:59,128 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) [2023-08-25 04:21:59,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:21:59,128 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-25 04:21:59,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 04:21:59,128 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-25 04:21:59,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:21:59,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1618208639, now seen corresponding path program 1 times [2023-08-25 04:21:59,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:21:59,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013670791] [2023-08-25 04:21:59,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:21:59,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:21:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:21:59,183 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:21:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:21:59,249 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:21:59,249 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:21:59,250 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (63 of 64 remaining) [2023-08-25 04:21:59,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (62 of 64 remaining) [2023-08-25 04:21:59,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (61 of 64 remaining) [2023-08-25 04:21:59,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (60 of 64 remaining) [2023-08-25 04:21:59,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (59 of 64 remaining) [2023-08-25 04:21:59,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (58 of 64 remaining) [2023-08-25 04:21:59,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (57 of 64 remaining) [2023-08-25 04:21:59,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8ASSERT_VIOLATIONASSERT (56 of 64 remaining) [2023-08-25 04:21:59,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (55 of 64 remaining) [2023-08-25 04:21:59,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (54 of 64 remaining) [2023-08-25 04:21:59,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONDATA_RACE (53 of 64 remaining) [2023-08-25 04:21:59,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONDATA_RACE (52 of 64 remaining) [2023-08-25 04:21:59,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONDATA_RACE (51 of 64 remaining) [2023-08-25 04:21:59,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr7ASSERT_VIOLATIONDATA_RACE (50 of 64 remaining) [2023-08-25 04:21:59,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONDATA_RACE (49 of 64 remaining) [2023-08-25 04:21:59,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr5ASSERT_VIOLATIONDATA_RACE (48 of 64 remaining) [2023-08-25 04:21:59,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr8ASSERT_VIOLATIONASSERT (47 of 64 remaining) [2023-08-25 04:21:59,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr4ASSERT_VIOLATIONDATA_RACE (46 of 64 remaining) [2023-08-25 04:21:59,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr6ASSERT_VIOLATIONDATA_RACE (45 of 64 remaining) [2023-08-25 04:21:59,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (44 of 64 remaining) [2023-08-25 04:21:59,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (43 of 64 remaining) [2023-08-25 04:21:59,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (42 of 64 remaining) [2023-08-25 04:21:59,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (41 of 64 remaining) [2023-08-25 04:21:59,255 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (40 of 64 remaining) [2023-08-25 04:21:59,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (39 of 64 remaining) [2023-08-25 04:21:59,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (38 of 64 remaining) [2023-08-25 04:21:59,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (37 of 64 remaining) [2023-08-25 04:21:59,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (36 of 64 remaining) [2023-08-25 04:21:59,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (35 of 64 remaining) [2023-08-25 04:21:59,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (34 of 64 remaining) [2023-08-25 04:21:59,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 64 remaining) [2023-08-25 04:21:59,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 64 remaining) [2023-08-25 04:21:59,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (31 of 64 remaining) [2023-08-25 04:21:59,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (30 of 64 remaining) [2023-08-25 04:21:59,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (29 of 64 remaining) [2023-08-25 04:21:59,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (28 of 64 remaining) [2023-08-25 04:21:59,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (27 of 64 remaining) [2023-08-25 04:21:59,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (26 of 64 remaining) [2023-08-25 04:21:59,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6ASSERT_VIOLATIONDATA_RACE (25 of 64 remaining) [2023-08-25 04:21:59,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (24 of 64 remaining) [2023-08-25 04:21:59,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (23 of 64 remaining) [2023-08-25 04:21:59,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (22 of 64 remaining) [2023-08-25 04:21:59,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (21 of 64 remaining) [2023-08-25 04:21:59,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (20 of 64 remaining) [2023-08-25 04:21:59,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (19 of 64 remaining) [2023-08-25 04:21:59,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8ASSERT_VIOLATIONASSERT (18 of 64 remaining) [2023-08-25 04:21:59,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (17 of 64 remaining) [2023-08-25 04:21:59,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (16 of 64 remaining) [2023-08-25 04:21:59,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 64 remaining) [2023-08-25 04:21:59,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONDATA_RACE (14 of 64 remaining) [2023-08-25 04:21:59,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 64 remaining) [2023-08-25 04:21:59,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr7ASSERT_VIOLATIONDATA_RACE (12 of 64 remaining) [2023-08-25 04:21:59,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONDATA_RACE (11 of 64 remaining) [2023-08-25 04:21:59,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr5ASSERT_VIOLATIONDATA_RACE (10 of 64 remaining) [2023-08-25 04:21:59,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr8ASSERT_VIOLATIONASSERT (9 of 64 remaining) [2023-08-25 04:21:59,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 64 remaining) [2023-08-25 04:21:59,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr6ASSERT_VIOLATIONDATA_RACE (7 of 64 remaining) [2023-08-25 04:21:59,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (6 of 64 remaining) [2023-08-25 04:21:59,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 64 remaining) [2023-08-25 04:21:59,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (4 of 64 remaining) [2023-08-25 04:21:59,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (3 of 64 remaining) [2023-08-25 04:21:59,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 64 remaining) [2023-08-25 04:21:59,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (1 of 64 remaining) [2023-08-25 04:21:59,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6ASSERT_VIOLATIONDATA_RACE (0 of 64 remaining) [2023-08-25 04:21:59,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 04:21:59,263 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-25 04:21:59,265 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:21:59,265 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 04:21:59,553 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-25 04:21:59,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 870 places, 947 transitions, 1984 flow [2023-08-25 04:22:02,421 INFO L124 PetriNetUnfolderBase]: 1156/8284 cut-off events. [2023-08-25 04:22:02,422 INFO L125 PetriNetUnfolderBase]: For 602/807 co-relation queries the response was YES. [2023-08-25 04:22:02,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8958 conditions, 8284 events. 1156/8284 cut-off events. For 602/807 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 84819 event pairs, 22 based on Foata normal form. 0/6942 useless extension candidates. Maximal degree in co-relation 5083. Up to 192 conditions per place. [2023-08-25 04:22:02,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 870 places, 947 transitions, 1984 flow [2023-08-25 04:22:02,807 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 870 places, 947 transitions, 1984 flow [2023-08-25 04:22:02,807 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:22:02,807 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 870 places, 947 transitions, 1984 flow [2023-08-25 04:22:02,808 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 870 places, 947 transitions, 1984 flow [2023-08-25 04:22:02,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 870 places, 947 transitions, 1984 flow [2023-08-25 04:22:05,456 INFO L124 PetriNetUnfolderBase]: 1156/8284 cut-off events. [2023-08-25 04:22:05,457 INFO L125 PetriNetUnfolderBase]: For 602/807 co-relation queries the response was YES. [2023-08-25 04:22:05,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8958 conditions, 8284 events. 1156/8284 cut-off events. For 602/807 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 84819 event pairs, 22 based on Foata normal form. 0/6942 useless extension candidates. Maximal degree in co-relation 5083. Up to 192 conditions per place. [2023-08-25 04:22:06,370 INFO L119 LiptonReduction]: Number of co-enabled transitions 563940 [2023-08-25 04:23:00,752 WARN L234 SmtUtils]: Spent 17.51s on a formula simplification. DAG size of input: 291 DAG size of output: 289 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 04:23:20,946 WARN L234 SmtUtils]: Spent 16.62s on a formula simplification. DAG size of input: 291 DAG size of output: 289 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 04:23:31,964 WARN L234 SmtUtils]: Spent 11.01s 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) [2023-08-25 04:23:31,980 INFO L134 LiptonReduction]: Checked pairs total: 3726940 [2023-08-25 04:23:31,980 INFO L136 LiptonReduction]: Total number of compositions: 598 [2023-08-25 04:23:31,983 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:23:31,984 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;@7ef2747, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:23:31,984 INFO L358 AbstractCegarLoop]: Starting to check reachability of 89 error locations. [2023-08-25 04:23:31,984 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:23:31,984 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 04:23:31,985 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:23:31,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:23:31,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 04:23:31,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 85 more)] === [2023-08-25 04:23:31,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:23:31,985 INFO L85 PathProgramCache]: Analyzing trace with hash 4032, now seen corresponding path program 1 times [2023-08-25 04:23:31,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:23:31,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678261636] [2023-08-25 04:23:31,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:23:31,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:23:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:23:31,993 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 04:23:31,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:23:31,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678261636] [2023-08-25 04:23:31,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678261636] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:23:31,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:23:31,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 04:23:31,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696324568] [2023-08-25 04:23:31,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:23:31,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 04:23:31,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:23:31,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 04:23:31,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 04:23:31,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 861 out of 1545 [2023-08-25 04:23:31,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 483 transitions, 1056 flow. Second operand has 2 states, 2 states have (on average 861.5) internal successors, (1723), 2 states have internal predecessors, (1723), 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 04:23:31,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:23:31,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 861 of 1545 [2023-08-25 04:23:31,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand