/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-4.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 20:06:52,879 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 20:06:52,937 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 20:06:52,941 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 20:06:52,941 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 20:06:52,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 20:06:52,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 20:06:52,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 20:06:52,963 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 20:06:52,965 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 20:06:52,966 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 20:06:52,966 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 20:06:52,967 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 20:06:52,967 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 20:06:52,968 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 20:06:52,968 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 20:06:52,968 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 20:06:52,968 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 20:06:52,968 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 20:06:52,968 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 20:06:52,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 20:06:52,969 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 20:06:52,969 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 20:06:52,969 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 20:06:52,969 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 20:06:52,969 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 20:06:52,969 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 20:06:52,970 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 20:06:52,970 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 20:06:52,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 20:06:52,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:06:52,971 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 20:06:52,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 20:06:52,971 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 20:06:52,972 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 20:06:52,972 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 20:06:52,972 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 20:06:52,972 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 20:06:52,972 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 20:06:52,972 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 20:06:52,973 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 20:06:52,973 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 20:06:53,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 20:06:53,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 20:06:53,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 20:06:53,172 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 20:06:53,172 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 20:06:53,173 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-4.wvr_bound2.c [2023-08-03 20:06:54,061 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 20:06:54,211 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 20:06:54,211 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-4.wvr_bound2.c [2023-08-03 20:06:54,216 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75843d7e8/da1feab4571349a2a066e4aaf2e35478/FLAG90e7bbf6e [2023-08-03 20:06:54,224 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75843d7e8/da1feab4571349a2a066e4aaf2e35478 [2023-08-03 20:06:54,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 20:06:54,227 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 20:06:54,228 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 20:06:54,228 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 20:06:54,234 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 20:06:54,235 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:06:54" (1/1) ... [2023-08-03 20:06:54,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e8577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:54, skipping insertion in model container [2023-08-03 20:06:54,235 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:06:54" (1/1) ... [2023-08-03 20:06:54,249 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 20:06:54,365 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-4.wvr_bound2.c[3193,3206] [2023-08-03 20:06:54,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:06:54,371 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 20:06:54,386 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-misc-4.wvr_bound2.c[3193,3206] [2023-08-03 20:06:54,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:06:54,392 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:06:54,392 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:06:54,396 INFO L206 MainTranslator]: Completed translation [2023-08-03 20:06:54,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:54 WrapperNode [2023-08-03 20:06:54,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 20:06:54,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 20:06:54,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 20:06:54,398 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 20:06:54,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:54" (1/1) ... [2023-08-03 20:06:54,407 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:54" (1/1) ... [2023-08-03 20:06:54,420 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 123 [2023-08-03 20:06:54,420 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 20:06:54,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 20:06:54,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 20:06:54,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 20:06:54,426 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:54" (1/1) ... [2023-08-03 20:06:54,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:54" (1/1) ... [2023-08-03 20:06:54,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:54" (1/1) ... [2023-08-03 20:06:54,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:54" (1/1) ... [2023-08-03 20:06:54,432 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:54" (1/1) ... [2023-08-03 20:06:54,435 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:54" (1/1) ... [2023-08-03 20:06:54,436 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:54" (1/1) ... [2023-08-03 20:06:54,437 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:54" (1/1) ... [2023-08-03 20:06:54,438 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 20:06:54,439 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 20:06:54,439 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 20:06:54,439 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 20:06:54,440 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:54" (1/1) ... [2023-08-03 20:06:54,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:06:54,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:06:54,458 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) [2023-08-03 20:06:54,460 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 [2023-08-03 20:06:54,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 20:06:54,479 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 20:06:54,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 20:06:54,479 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 20:06:54,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 20:06:54,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 20:06:54,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 20:06:54,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 20:06:54,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 20:06:54,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 20:06:54,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 20:06:54,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 20:06:54,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 20:06:54,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 20:06:54,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 20:06:54,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 20:06:54,481 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 20:06:54,542 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 20:06:54,544 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 20:06:54,707 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 20:06:54,721 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 20:06:54,721 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-03 20:06:54,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:06:54 BoogieIcfgContainer [2023-08-03 20:06:54,723 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 20:06:54,725 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 20:06:54,725 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 20:06:54,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 20:06:54,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 08:06:54" (1/3) ... [2023-08-03 20:06:54,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f149c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:06:54, skipping insertion in model container [2023-08-03 20:06:54,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:06:54" (2/3) ... [2023-08-03 20:06:54,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f149c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:06:54, skipping insertion in model container [2023-08-03 20:06:54,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:06:54" (3/3) ... [2023-08-03 20:06:54,728 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_parallel-misc-4.wvr_bound2.c [2023-08-03 20:06:54,733 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 20:06:54,739 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 20:06:54,739 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 20:06:54,739 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 20:06:54,781 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 20:06:54,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 151 transitions, 344 flow [2023-08-03 20:06:54,891 INFO L124 PetriNetUnfolderBase]: 84/551 cut-off events. [2023-08-03 20:06:54,891 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:06:54,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 551 events. 84/551 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2658 event pairs, 0 based on Foata normal form. 0/457 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2023-08-03 20:06:54,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 151 transitions, 344 flow [2023-08-03 20:06:54,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 151 transitions, 344 flow [2023-08-03 20:06:54,911 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:06:54,917 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 151 transitions, 344 flow [2023-08-03 20:06:54,919 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 151 transitions, 344 flow [2023-08-03 20:06:54,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 151 transitions, 344 flow [2023-08-03 20:06:54,998 INFO L124 PetriNetUnfolderBase]: 84/551 cut-off events. [2023-08-03 20:06:54,999 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:06:55,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 551 events. 84/551 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2658 event pairs, 0 based on Foata normal form. 0/457 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2023-08-03 20:06:55,007 INFO L119 LiptonReduction]: Number of co-enabled transitions 4464 [2023-08-03 20:06:57,336 INFO L134 LiptonReduction]: Checked pairs total: 8443 [2023-08-03 20:06:57,336 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-03 20:06:57,345 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:06:57,349 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=true, 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;@220cd508, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:06:57,349 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:06:57,352 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:06:57,352 INFO L124 PetriNetUnfolderBase]: 2/32 cut-off events. [2023-08-03 20:06:57,352 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 20:06:57,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:06:57,353 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 20:06:57,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:06:57,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:06:57,356 INFO L85 PathProgramCache]: Analyzing trace with hash -442165224, now seen corresponding path program 1 times [2023-08-03 20:06:57,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:06:57,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440693225] [2023-08-03 20:06:57,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:06:57,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:06:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:06:57,442 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 20:06:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:06:57,477 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 20:06:57,479 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 20:06:57,479 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 20:06:57,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 20:06:57,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 20:06:57,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 20:06:57,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 20:06:57,482 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 20:06:57,485 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 20:06:57,485 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 20:06:57,517 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 20:06:57,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 190 transitions, 470 flow [2023-08-03 20:06:57,778 INFO L124 PetriNetUnfolderBase]: 795/3560 cut-off events. [2023-08-03 20:06:57,778 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:06:57,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4234 conditions, 3560 events. 795/3560 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 27650 event pairs, 19 based on Foata normal form. 0/3009 useless extension candidates. Maximal degree in co-relation 2137. Up to 192 conditions per place. [2023-08-03 20:06:57,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 190 transitions, 470 flow [2023-08-03 20:06:57,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 190 transitions, 470 flow [2023-08-03 20:06:57,815 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:06:57,815 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 190 transitions, 470 flow [2023-08-03 20:06:57,815 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 190 transitions, 470 flow [2023-08-03 20:06:57,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 190 transitions, 470 flow [2023-08-03 20:06:58,086 INFO L124 PetriNetUnfolderBase]: 795/3560 cut-off events. [2023-08-03 20:06:58,087 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:06:58,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4234 conditions, 3560 events. 795/3560 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 27650 event pairs, 19 based on Foata normal form. 0/3009 useless extension candidates. Maximal degree in co-relation 2137. Up to 192 conditions per place. [2023-08-03 20:06:58,137 INFO L119 LiptonReduction]: Number of co-enabled transitions 11556 [2023-08-03 20:07:00,135 INFO L134 LiptonReduction]: Checked pairs total: 48995 [2023-08-03 20:07:00,136 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-03 20:07:00,137 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:07:00,138 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=true, 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;@220cd508, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:07:00,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:07:00,140 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:07:00,140 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2023-08-03 20:07:00,140 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 20:07:00,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:07:00,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:07:00,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:07:00,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:07:00,141 INFO L85 PathProgramCache]: Analyzing trace with hash -957116919, now seen corresponding path program 1 times [2023-08-03 20:07:00,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:07:00,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798251647] [2023-08-03 20:07:00,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:07:00,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:07:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:07:00,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:07:00,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:07:00,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798251647] [2023-08-03 20:07:00,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798251647] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:07:00,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:07:00,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 20:07:00,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571637952] [2023-08-03 20:07:00,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:07:00,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:07:00,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:07:00,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:07:00,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:07:00,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 309 [2023-08-03 20:07:00,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 87 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 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) [2023-08-03 20:07:00,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:07:00,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 309 [2023-08-03 20:07:00,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:07:29,327 INFO L124 PetriNetUnfolderBase]: 455587/597871 cut-off events. [2023-08-03 20:07:29,328 INFO L125 PetriNetUnfolderBase]: For 67153/67153 co-relation queries the response was YES. [2023-08-03 20:07:31,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1174579 conditions, 597871 events. 455587/597871 cut-off events. For 67153/67153 co-relation queries the response was YES. Maximal size of possible extension queue 15410. Compared 4248654 event pairs, 225536 based on Foata normal form. 0/365908 useless extension candidates. Maximal degree in co-relation 366479. Up to 535866 conditions per place. [2023-08-03 20:07:33,437 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 66 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-08-03 20:07:33,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 93 transitions, 412 flow [2023-08-03 20:07:33,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:07:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:07:33,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2023-08-03 20:07:33,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5480043149946062 [2023-08-03 20:07:33,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2023-08-03 20:07:33,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2023-08-03 20:07:33,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:07:33,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2023-08-03 20:07:33,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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) [2023-08-03 20:07:33,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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) [2023-08-03 20:07:33,456 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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) [2023-08-03 20:07:33,457 INFO L175 Difference]: Start difference. First operand has 74 places, 87 transitions, 264 flow. Second operand 3 states and 508 transitions. [2023-08-03 20:07:33,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 93 transitions, 412 flow [2023-08-03 20:07:33,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 93 transitions, 412 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 20:07:33,530 INFO L231 Difference]: Finished difference. Result has 76 places, 87 transitions, 274 flow [2023-08-03 20:07:33,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=76, PETRI_TRANSITIONS=87} [2023-08-03 20:07:33,534 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 2 predicate places. [2023-08-03 20:07:33,535 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 87 transitions, 274 flow [2023-08-03 20:07:33,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 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) [2023-08-03 20:07:33,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:07:33,537 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 20:07:33,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 20:07:33,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:07:33,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:07:33,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1214839391, now seen corresponding path program 1 times [2023-08-03 20:07:33,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:07:33,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502013405] [2023-08-03 20:07:33,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:07:33,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:07:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:07:33,607 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:07:33,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:07:33,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502013405] [2023-08-03 20:07:33,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502013405] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:07:33,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324678882] [2023-08-03 20:07:33,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:07:33,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:07:33,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:07:33,611 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:07:33,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 20:07:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:07:33,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:07:33,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:07:33,704 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:07:33,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:07:33,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324678882] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:07:33,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:07:33,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 20:07:33,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899536520] [2023-08-03 20:07:33,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:07:33,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:07:33,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:07:33,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:07:33,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:07:33,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 309 [2023-08-03 20:07:33,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 87 transitions, 274 flow. Second operand has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 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) [2023-08-03 20:07:33,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:07:33,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 309 [2023-08-03 20:07:33,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:07:59,429 INFO L124 PetriNetUnfolderBase]: 410697/551776 cut-off events. [2023-08-03 20:07:59,430 INFO L125 PetriNetUnfolderBase]: For 66719/66719 co-relation queries the response was YES. [2023-08-03 20:08:01,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1083587 conditions, 551776 events. 410697/551776 cut-off events. For 66719/66719 co-relation queries the response was YES. Maximal size of possible extension queue 15240. Compared 4147146 event pairs, 165696 based on Foata normal form. 25/350093 useless extension candidates. Maximal degree in co-relation 335065. Up to 490835 conditions per place. [2023-08-03 20:08:03,469 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 75 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2023-08-03 20:08:03,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 103 transitions, 462 flow [2023-08-03 20:08:03,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:08:03,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:08:03,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 805 transitions. [2023-08-03 20:08:03,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210355987055016 [2023-08-03 20:08:03,472 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 805 transitions. [2023-08-03 20:08:03,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 805 transitions. [2023-08-03 20:08:03,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:08:03,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 805 transitions. [2023-08-03 20:08:03,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 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) [2023-08-03 20:08:03,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 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) [2023-08-03 20:08:03,477 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 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) [2023-08-03 20:08:03,477 INFO L175 Difference]: Start difference. First operand has 76 places, 87 transitions, 274 flow. Second operand 5 states and 805 transitions. [2023-08-03 20:08:03,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 103 transitions, 462 flow [2023-08-03 20:08:03,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 103 transitions, 452 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 20:08:03,510 INFO L231 Difference]: Finished difference. Result has 78 places, 87 transitions, 279 flow [2023-08-03 20:08:03,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=279, PETRI_PLACES=78, PETRI_TRANSITIONS=87} [2023-08-03 20:08:03,510 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 4 predicate places. [2023-08-03 20:08:03,510 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 87 transitions, 279 flow [2023-08-03 20:08:03,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 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) [2023-08-03 20:08:03,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:08:03,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:08:03,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 20:08:03,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:08:03,716 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:08:03,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:08:03,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1788893428, now seen corresponding path program 1 times [2023-08-03 20:08:03,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:08:03,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414730016] [2023-08-03 20:08:03,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:08:03,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:08:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:08:03,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 20:08:03,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:08:03,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414730016] [2023-08-03 20:08:03,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414730016] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:08:03,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64271466] [2023-08-03 20:08:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:08:03,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:08:03,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:08:03,783 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:08:03,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 20:08:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:08:03,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:08:03,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:08:03,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 20:08:03,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:08:03,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64271466] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:08:03,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:08:03,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 20:08:03,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209911119] [2023-08-03 20:08:03,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:08:03,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:08:03,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:08:03,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:08:03,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:08:03,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 309 [2023-08-03 20:08:03,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 87 transitions, 279 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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) [2023-08-03 20:08:03,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:08:03,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 309 [2023-08-03 20:08:03,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:08:31,429 INFO L124 PetriNetUnfolderBase]: 490924/606863 cut-off events. [2023-08-03 20:08:31,429 INFO L125 PetriNetUnfolderBase]: For 50086/50086 co-relation queries the response was YES. [2023-08-03 20:08:33,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224059 conditions, 606863 events. 490924/606863 cut-off events. For 50086/50086 co-relation queries the response was YES. Maximal size of possible extension queue 13160. Compared 3677941 event pairs, 230642 based on Foata normal form. 0/345016 useless extension candidates. Maximal degree in co-relation 383448. Up to 578478 conditions per place. [2023-08-03 20:08:35,392 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 75 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2023-08-03 20:08:35,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 102 transitions, 465 flow [2023-08-03 20:08:35,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:08:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:08:35,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-08-03 20:08:35,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-08-03 20:08:35,394 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-08-03 20:08:35,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-08-03 20:08:35,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:08:35,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-08-03 20:08:35,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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) [2023-08-03 20:08:35,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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) [2023-08-03 20:08:35,397 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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) [2023-08-03 20:08:35,397 INFO L175 Difference]: Start difference. First operand has 78 places, 87 transitions, 279 flow. Second operand 3 states and 515 transitions. [2023-08-03 20:08:35,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 102 transitions, 465 flow [2023-08-03 20:08:35,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 102 transitions, 458 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 20:08:35,406 INFO L231 Difference]: Finished difference. Result has 79 places, 88 transitions, 287 flow [2023-08-03 20:08:35,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=79, PETRI_TRANSITIONS=88} [2023-08-03 20:08:35,407 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2023-08-03 20:08:35,407 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 88 transitions, 287 flow [2023-08-03 20:08:35,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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) [2023-08-03 20:08:35,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:08:35,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:08:35,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 20:08:35,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 20:08:35,612 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:08:35,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:08:35,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1370018927, now seen corresponding path program 1 times [2023-08-03 20:08:35,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:08:35,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27651764] [2023-08-03 20:08:35,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:08:35,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:08:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:08:35,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 20:08:35,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:08:35,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27651764] [2023-08-03 20:08:35,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27651764] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:08:35,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765556336] [2023-08-03 20:08:35,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:08:35,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:08:35,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:08:35,651 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:08:35,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 20:08:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:08:35,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:08:35,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:08:35,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 20:08:35,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:08:35,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765556336] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:08:35,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:08:35,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 20:08:35,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83256486] [2023-08-03 20:08:35,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:08:35,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:08:35,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:08:35,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:08:35,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:08:35,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 309 [2023-08-03 20:08:35,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 88 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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) [2023-08-03 20:08:35,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:08:35,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 309 [2023-08-03 20:08:35,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:09:05,228 INFO L124 PetriNetUnfolderBase]: 489234/604113 cut-off events. [2023-08-03 20:09:05,228 INFO L125 PetriNetUnfolderBase]: For 39839/39839 co-relation queries the response was YES. [2023-08-03 20:09:07,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1222029 conditions, 604113 events. 489234/604113 cut-off events. For 39839/39839 co-relation queries the response was YES. Maximal size of possible extension queue 14757. Compared 3621383 event pairs, 250306 based on Foata normal form. 0/345722 useless extension candidates. Maximal degree in co-relation 379617. Up to 564466 conditions per place. [2023-08-03 20:09:10,250 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 81 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-08-03 20:09:10,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 107 transitions, 491 flow [2023-08-03 20:09:10,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:09:10,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:09:10,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 519 transitions. [2023-08-03 20:09:10,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5598705501618123 [2023-08-03 20:09:10,252 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 519 transitions. [2023-08-03 20:09:10,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 519 transitions. [2023-08-03 20:09:10,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:09:10,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 519 transitions. [2023-08-03 20:09:10,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 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) [2023-08-03 20:09:10,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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) [2023-08-03 20:09:10,254 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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) [2023-08-03 20:09:10,254 INFO L175 Difference]: Start difference. First operand has 79 places, 88 transitions, 287 flow. Second operand 3 states and 519 transitions. [2023-08-03 20:09:10,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 107 transitions, 491 flow [2023-08-03 20:09:10,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 107 transitions, 488 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:09:10,262 INFO L231 Difference]: Finished difference. Result has 81 places, 89 transitions, 296 flow [2023-08-03 20:09:10,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=81, PETRI_TRANSITIONS=89} [2023-08-03 20:09:10,264 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 7 predicate places. [2023-08-03 20:09:10,264 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 89 transitions, 296 flow [2023-08-03 20:09:10,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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) [2023-08-03 20:09:10,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:09:10,264 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:09:10,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 20:09:10,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:09:10,469 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:09:10,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:09:10,469 INFO L85 PathProgramCache]: Analyzing trace with hash 632137411, now seen corresponding path program 1 times [2023-08-03 20:09:10,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:09:10,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555749296] [2023-08-03 20:09:10,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:09:10,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:09:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:09:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:09:10,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:09:10,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555749296] [2023-08-03 20:09:10,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555749296] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:09:10,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444416507] [2023-08-03 20:09:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:09:10,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:09:10,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:09:10,551 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:09:10,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 20:09:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:09:10,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:09:10,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:09:10,661 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:09:10,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:09:10,678 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:09:10,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444416507] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:09:10,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:09:10,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 20:09:10,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932259624] [2023-08-03 20:09:10,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:09:10,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:09:10,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:09:10,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:09:10,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:09:10,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 309 [2023-08-03 20:09:10,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 89 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 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) [2023-08-03 20:09:10,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:09:10,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 309 [2023-08-03 20:09:10,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:09:35,346 INFO L124 PetriNetUnfolderBase]: 390417/502652 cut-off events. [2023-08-03 20:09:35,346 INFO L125 PetriNetUnfolderBase]: For 43990/43990 co-relation queries the response was YES. [2023-08-03 20:09:37,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025117 conditions, 502652 events. 390417/502652 cut-off events. For 43990/43990 co-relation queries the response was YES. Maximal size of possible extension queue 14975. Compared 3437604 event pairs, 162270 based on Foata normal form. 5/312561 useless extension candidates. Maximal degree in co-relation 318564. Up to 477196 conditions per place. [2023-08-03 20:09:39,378 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 77 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2023-08-03 20:09:39,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 104 transitions, 482 flow [2023-08-03 20:09:39,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:09:39,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:09:39,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 659 transitions. [2023-08-03 20:09:39,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331715210355987 [2023-08-03 20:09:39,380 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 659 transitions. [2023-08-03 20:09:39,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 659 transitions. [2023-08-03 20:09:39,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:09:39,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 659 transitions. [2023-08-03 20:09:39,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 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) [2023-08-03 20:09:39,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 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) [2023-08-03 20:09:39,384 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 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) [2023-08-03 20:09:39,384 INFO L175 Difference]: Start difference. First operand has 81 places, 89 transitions, 296 flow. Second operand 4 states and 659 transitions. [2023-08-03 20:09:39,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 104 transitions, 482 flow [2023-08-03 20:09:39,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 104 transitions, 480 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:09:39,427 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 292 flow [2023-08-03 20:09:39,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2023-08-03 20:09:39,438 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 9 predicate places. [2023-08-03 20:09:39,439 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 292 flow [2023-08-03 20:09:39,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 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) [2023-08-03 20:09:39,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:09:39,440 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:09:39,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 20:09:39,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:09:39,640 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:09:39,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:09:39,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1148728641, now seen corresponding path program 1 times [2023-08-03 20:09:39,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:09:39,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742718829] [2023-08-03 20:09:39,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:09:39,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:09:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:09:39,729 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 20:09:39,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:09:39,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742718829] [2023-08-03 20:09:39,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742718829] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:09:39,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245475479] [2023-08-03 20:09:39,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:09:39,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:09:39,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:09:39,731 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:09:39,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 20:09:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:09:39,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:09:39,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:09:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 20:09:39,822 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:09:39,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245475479] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:09:39,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:09:39,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 20:09:39,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929944404] [2023-08-03 20:09:39,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:09:39,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:09:39,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:09:39,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:09:39,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:09:39,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 309 [2023-08-03 20:09:39,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 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) [2023-08-03 20:09:39,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:09:39,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 309 [2023-08-03 20:09:39,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:10:06,058 INFO L124 PetriNetUnfolderBase]: 425388/535337 cut-off events. [2023-08-03 20:10:06,058 INFO L125 PetriNetUnfolderBase]: For 40877/40877 co-relation queries the response was YES. [2023-08-03 20:10:08,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1091904 conditions, 535337 events. 425388/535337 cut-off events. For 40877/40877 co-relation queries the response was YES. Maximal size of possible extension queue 14949. Compared 3427705 event pairs, 57188 based on Foata normal form. 400/322741 useless extension candidates. Maximal degree in co-relation 335671. Up to 508740 conditions per place. [2023-08-03 20:10:10,073 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 101 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2023-08-03 20:10:10,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 128 transitions, 582 flow [2023-08-03 20:10:10,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:10:10,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:10:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 829 transitions. [2023-08-03 20:10:10,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5365695792880258 [2023-08-03 20:10:10,075 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 829 transitions. [2023-08-03 20:10:10,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 829 transitions. [2023-08-03 20:10:10,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:10:10,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 829 transitions. [2023-08-03 20:10:10,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.8) internal successors, (829), 5 states have internal predecessors, (829), 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) [2023-08-03 20:10:10,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 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) [2023-08-03 20:10:10,078 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 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) [2023-08-03 20:10:10,078 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 292 flow. Second operand 5 states and 829 transitions. [2023-08-03 20:10:10,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 128 transitions, 582 flow [2023-08-03 20:10:10,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 128 transitions, 568 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 20:10:10,125 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 295 flow [2023-08-03 20:10:10,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=295, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2023-08-03 20:10:10,126 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 9 predicate places. [2023-08-03 20:10:10,126 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 295 flow [2023-08-03 20:10:10,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 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) [2023-08-03 20:10:10,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:10:10,126 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:10:10,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-03 20:10:10,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:10:10,330 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:10:10,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:10:10,331 INFO L85 PathProgramCache]: Analyzing trace with hash 557789355, now seen corresponding path program 1 times [2023-08-03 20:10:10,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:10:10,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571548761] [2023-08-03 20:10:10,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:10:10,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:10:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:10:10,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 20:10:10,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:10:10,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571548761] [2023-08-03 20:10:10,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571548761] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:10:10,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837876202] [2023-08-03 20:10:10,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:10:10,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:10:10,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:10:10,368 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:10:10,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 20:10:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:10:10,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:10:10,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:10:10,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 20:10:10,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:10:10,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837876202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:10:10,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:10:10,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 20:10:10,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970945686] [2023-08-03 20:10:10,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:10:10,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:10:10,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:10:10,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:10:10,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:10:10,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 309 [2023-08-03 20:10:10,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 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) [2023-08-03 20:10:10,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:10:10,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 309 [2023-08-03 20:10:10,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:10:35,533 INFO L124 PetriNetUnfolderBase]: 409366/505885 cut-off events. [2023-08-03 20:10:35,533 INFO L125 PetriNetUnfolderBase]: For 34712/34712 co-relation queries the response was YES. [2023-08-03 20:10:37,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030410 conditions, 505885 events. 409366/505885 cut-off events. For 34712/34712 co-relation queries the response was YES. Maximal size of possible extension queue 13172. Compared 2998211 event pairs, 200672 based on Foata normal form. 0/293030 useless extension candidates. Maximal degree in co-relation 284868. Up to 414968 conditions per place. [2023-08-03 20:10:39,133 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 89 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2023-08-03 20:10:39,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 114 transitions, 543 flow [2023-08-03 20:10:39,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:10:39,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:10:39,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2023-08-03 20:10:39,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5674217907227616 [2023-08-03 20:10:39,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2023-08-03 20:10:39,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2023-08-03 20:10:39,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:10:39,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2023-08-03 20:10:39,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 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) [2023-08-03 20:10:39,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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) [2023-08-03 20:10:39,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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) [2023-08-03 20:10:39,137 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 295 flow. Second operand 3 states and 526 transitions. [2023-08-03 20:10:39,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 114 transitions, 543 flow [2023-08-03 20:10:39,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 114 transitions, 536 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 20:10:39,167 INFO L231 Difference]: Finished difference. Result has 84 places, 89 transitions, 300 flow [2023-08-03 20:10:39,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=84, PETRI_TRANSITIONS=89} [2023-08-03 20:10:39,168 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 10 predicate places. [2023-08-03 20:10:39,168 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 89 transitions, 300 flow [2023-08-03 20:10:39,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 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) [2023-08-03 20:10:39,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:10:39,168 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:10:39,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-03 20:10:39,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:10:39,372 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:10:39,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:10:39,372 INFO L85 PathProgramCache]: Analyzing trace with hash -93675346, now seen corresponding path program 1 times [2023-08-03 20:10:39,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:10:39,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110282454] [2023-08-03 20:10:39,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:10:39,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:10:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:10:39,417 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 20:10:39,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:10:39,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110282454] [2023-08-03 20:10:39,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110282454] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:10:39,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696625453] [2023-08-03 20:10:39,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:10:39,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:10:39,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:10:39,418 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:10:39,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 20:10:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:10:39,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:10:39,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:10:39,492 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 20:10:39,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:10:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 20:10:39,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696625453] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:10:39,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:10:39,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:10:39,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987321793] [2023-08-03 20:10:39,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:10:39,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:10:39,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:10:39,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:10:39,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:10:39,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 309 [2023-08-03 20:10:39,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 89 transitions, 300 flow. Second operand has 5 states, 5 states have (on average 148.6) internal successors, (743), 5 states have internal predecessors, (743), 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) [2023-08-03 20:10:39,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:10:39,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 309 [2023-08-03 20:10:39,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:11:02,385 INFO L124 PetriNetUnfolderBase]: 347652/438941 cut-off events. [2023-08-03 20:11:02,386 INFO L125 PetriNetUnfolderBase]: For 46547/46547 co-relation queries the response was YES. [2023-08-03 20:11:04,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 914648 conditions, 438941 events. 347652/438941 cut-off events. For 46547/46547 co-relation queries the response was YES. Maximal size of possible extension queue 13700. Compared 2878464 event pairs, 143160 based on Foata normal form. 100/269733 useless extension candidates. Maximal degree in co-relation 256777. Up to 417854 conditions per place. [2023-08-03 20:11:05,768 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 92 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2023-08-03 20:11:05,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 118 transitions, 544 flow [2023-08-03 20:11:05,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 20:11:05,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 20:11:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 673 transitions. [2023-08-03 20:11:05,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444983818770227 [2023-08-03 20:11:05,769 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 673 transitions. [2023-08-03 20:11:05,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 673 transitions. [2023-08-03 20:11:05,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:11:05,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 673 transitions. [2023-08-03 20:11:05,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 168.25) internal successors, (673), 4 states have internal predecessors, (673), 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) [2023-08-03 20:11:05,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 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) [2023-08-03 20:11:05,772 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 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) [2023-08-03 20:11:05,772 INFO L175 Difference]: Start difference. First operand has 84 places, 89 transitions, 300 flow. Second operand 4 states and 673 transitions. [2023-08-03 20:11:05,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 118 transitions, 544 flow [2023-08-03 20:11:06,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 118 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:11:06,355 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 296 flow [2023-08-03 20:11:06,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2023-08-03 20:11:06,356 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 12 predicate places. [2023-08-03 20:11:06,356 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 296 flow [2023-08-03 20:11:06,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.6) internal successors, (743), 5 states have internal predecessors, (743), 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) [2023-08-03 20:11:06,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:11:06,356 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:11:06,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-03 20:11:06,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:11:06,559 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:11:06,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:11:06,560 INFO L85 PathProgramCache]: Analyzing trace with hash -783411728, now seen corresponding path program 1 times [2023-08-03 20:11:06,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:11:06,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086424925] [2023-08-03 20:11:06,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:11:06,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:11:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:11:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 20:11:06,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:11:06,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086424925] [2023-08-03 20:11:06,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086424925] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:11:06,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726656918] [2023-08-03 20:11:06,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:11:06,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:11:06,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:11:06,599 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:11:06,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 20:11:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:11:06,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 20:11:06,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:11:06,676 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 20:11:06,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:11:06,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726656918] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:11:06,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:11:06,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 20:11:06,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925672739] [2023-08-03 20:11:06,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:11:06,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:11:06,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:11:06,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:11:06,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 20:11:06,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 309 [2023-08-03 20:11:06,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 148.6) internal successors, (743), 5 states have internal predecessors, (743), 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) [2023-08-03 20:11:06,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:11:06,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 309 [2023-08-03 20:11:06,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:11:30,251 INFO L124 PetriNetUnfolderBase]: 380662/469701 cut-off events. [2023-08-03 20:11:30,251 INFO L125 PetriNetUnfolderBase]: For 37262/37262 co-relation queries the response was YES. [2023-08-03 20:11:32,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971483 conditions, 469701 events. 380662/469701 cut-off events. For 37262/37262 co-relation queries the response was YES. Maximal size of possible extension queue 13701. Compared 2744930 event pairs, 7018 based on Foata normal form. 1600/278008 useless extension candidates. Maximal degree in co-relation 281872. Up to 413814 conditions per place. [2023-08-03 20:11:33,709 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 114 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2023-08-03 20:11:33,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 140 transitions, 636 flow [2023-08-03 20:11:33,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 20:11:33,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 20:11:33,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 841 transitions. [2023-08-03 20:11:33,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.544336569579288 [2023-08-03 20:11:33,711 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 841 transitions. [2023-08-03 20:11:33,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 841 transitions. [2023-08-03 20:11:33,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:11:33,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 841 transitions. [2023-08-03 20:11:33,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.2) internal successors, (841), 5 states have internal predecessors, (841), 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) [2023-08-03 20:11:33,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 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) [2023-08-03 20:11:33,715 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 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) [2023-08-03 20:11:33,715 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 296 flow. Second operand 5 states and 841 transitions. [2023-08-03 20:11:33,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 140 transitions, 636 flow [2023-08-03 20:11:34,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 140 transitions, 622 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 20:11:34,877 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 299 flow [2023-08-03 20:11:34,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=299, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2023-08-03 20:11:34,877 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 12 predicate places. [2023-08-03 20:11:34,877 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 299 flow [2023-08-03 20:11:34,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.6) internal successors, (743), 5 states have internal predecessors, (743), 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) [2023-08-03 20:11:34,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:11:34,878 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:11:34,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 20:11:35,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-03 20:11:35,079 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:11:35,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:11:35,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1409927809, now seen corresponding path program 1 times [2023-08-03 20:11:35,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:11:35,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236993620] [2023-08-03 20:11:35,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:11:35,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:11:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:11:35,131 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 20:11:35,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:11:35,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236993620] [2023-08-03 20:11:35,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236993620] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:11:35,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211007069] [2023-08-03 20:11:35,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:11:35,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:11:35,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:11:35,132 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:11:35,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 20:11:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:11:35,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:11:35,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:11:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 20:11:35,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:11:35,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211007069] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:11:35,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:11:35,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 20:11:35,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418105324] [2023-08-03 20:11:35,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:11:35,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:11:35,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:11:35,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:11:35,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:11:35,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 309 [2023-08-03 20:11:35,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 299 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2023-08-03 20:11:35,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:11:35,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 309 [2023-08-03 20:11:35,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:11:57,277 INFO L124 PetriNetUnfolderBase]: 347394/431857 cut-off events. [2023-08-03 20:11:57,277 INFO L125 PetriNetUnfolderBase]: For 51274/51274 co-relation queries the response was YES. [2023-08-03 20:11:59,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897461 conditions, 431857 events. 347394/431857 cut-off events. For 51274/51274 co-relation queries the response was YES. Maximal size of possible extension queue 10256. Compared 2555571 event pairs, 158854 based on Foata normal form. 0/258424 useless extension candidates. Maximal degree in co-relation 268217. Up to 317912 conditions per place. [2023-08-03 20:12:00,479 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 90 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2023-08-03 20:12:00,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 114 transitions, 547 flow [2023-08-03 20:12:00,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:12:00,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:12:00,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2023-08-03 20:12:00,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5674217907227616 [2023-08-03 20:12:00,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2023-08-03 20:12:00,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2023-08-03 20:12:00,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:12:00,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2023-08-03 20:12:00,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 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) [2023-08-03 20:12:00,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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) [2023-08-03 20:12:00,483 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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) [2023-08-03 20:12:00,483 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 299 flow. Second operand 3 states and 526 transitions. [2023-08-03 20:12:00,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 114 transitions, 547 flow [2023-08-03 20:12:01,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 114 transitions, 540 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 20:12:01,332 INFO L231 Difference]: Finished difference. Result has 87 places, 89 transitions, 304 flow [2023-08-03 20:12:01,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=87, PETRI_TRANSITIONS=89} [2023-08-03 20:12:01,332 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 13 predicate places. [2023-08-03 20:12:01,332 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 89 transitions, 304 flow [2023-08-03 20:12:01,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2023-08-03 20:12:01,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:12:01,333 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:12:01,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 20:12:01,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:12:01,533 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:12:01,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:12:01,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1573598562, now seen corresponding path program 1 times [2023-08-03 20:12:01,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:12:01,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370597415] [2023-08-03 20:12:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:12:01,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:12:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:12:01,570 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 20:12:01,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:12:01,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370597415] [2023-08-03 20:12:01,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370597415] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:12:01,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428377631] [2023-08-03 20:12:01,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:12:01,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:12:01,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:12:01,571 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:12:01,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 20:12:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:12:01,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 20:12:01,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:12:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 20:12:01,646 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 20:12:01,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428377631] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:12:01,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 20:12:01,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 20:12:01,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363624210] [2023-08-03 20:12:01,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:12:01,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:12:01,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:12:01,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:12:01,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:12:01,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 309 [2023-08-03 20:12:01,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 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) [2023-08-03 20:12:01,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:12:01,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 309 [2023-08-03 20:12:01,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 20:12:25,884 INFO L124 PetriNetUnfolderBase]: 344483/429334 cut-off events. [2023-08-03 20:12:25,885 INFO L125 PetriNetUnfolderBase]: For 53422/53422 co-relation queries the response was YES. [2023-08-03 20:12:27,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 907864 conditions, 429334 events. 344483/429334 cut-off events. For 53422/53422 co-relation queries the response was YES. Maximal size of possible extension queue 10021. Compared 2547461 event pairs, 185914 based on Foata normal form. 0/262963 useless extension candidates. Maximal degree in co-relation 465779. Up to 370309 conditions per place. [2023-08-03 20:12:29,137 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 91 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2023-08-03 20:12:29,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 115 transitions, 554 flow [2023-08-03 20:12:29,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 20:12:29,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 20:12:29,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2023-08-03 20:12:29,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5674217907227616 [2023-08-03 20:12:29,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2023-08-03 20:12:29,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2023-08-03 20:12:29,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 20:12:29,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2023-08-03 20:12:29,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 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) [2023-08-03 20:12:29,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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) [2023-08-03 20:12:29,141 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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) [2023-08-03 20:12:29,141 INFO L175 Difference]: Start difference. First operand has 87 places, 89 transitions, 304 flow. Second operand 3 states and 526 transitions. [2023-08-03 20:12:29,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 115 transitions, 554 flow [2023-08-03 20:12:48,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 115 transitions, 552 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 20:12:48,026 INFO L231 Difference]: Finished difference. Result has 89 places, 90 transitions, 314 flow [2023-08-03 20:12:48,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=89, PETRI_TRANSITIONS=90} [2023-08-03 20:12:48,027 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 15 predicate places. [2023-08-03 20:12:48,027 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 90 transitions, 314 flow [2023-08-03 20:12:48,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 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) [2023-08-03 20:12:48,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:12:48,027 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:12:48,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 20:12:48,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-03 20:12:48,228 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:12:48,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:12:48,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1791372905, now seen corresponding path program 1 times [2023-08-03 20:12:48,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:12:48,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206081227] [2023-08-03 20:12:48,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:12:48,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:12:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:12:48,276 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 20:12:48,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:12:48,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206081227] [2023-08-03 20:12:48,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206081227] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 20:12:48,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505422075] [2023-08-03 20:12:48,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:12:48,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 20:12:48,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:12:48,278 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 20:12:48,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 20:12:48,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:12:48,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 20:12:48,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 20:12:48,377 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 20:12:48,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 20:12:48,388 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 20:12:48,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505422075] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 20:12:48,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 20:12:48,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 20:12:48,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659108213] [2023-08-03 20:12:48,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 20:12:48,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 20:12:48,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:12:48,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 20:12:48,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 20:12:48,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 309 [2023-08-03 20:12:48,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 90 transitions, 314 flow. Second operand has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 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) [2023-08-03 20:12:48,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:12:48,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 309 [2023-08-03 20:12:48,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand