/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/pthread-wmm_safe018_rmo.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:35:13,394 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:35:13,470 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:35:13,476 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:35:13,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:35:13,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:35:13,478 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:35:13,504 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:35:13,505 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:35:13,508 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:35:13,509 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:35:13,509 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:35:13,510 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:35:13,511 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:35:13,511 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:35:13,512 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:35:13,512 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:35:13,512 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:35:13,512 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:35:13,512 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:35:13,513 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:35:13,513 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:35:13,513 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:35:13,514 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:35:13,514 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:35:13,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:35:13,515 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:35:13,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:35:13,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:35:13,516 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:35:13,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:35:13,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:35:13,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:35:13,518 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:35:13,518 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:35:13,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:35:13,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:35:13,518 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:35:13,518 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:35:13,519 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:35:13,519 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:35:13,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:35:13,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:35:13,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:35:13,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:35:13,783 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:35:13,784 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:35:13,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe018_rmo.opt_bound2.i [2023-08-03 18:35:14,908 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:35:15,137 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:35:15,138 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe018_rmo.opt_bound2.i [2023-08-03 18:35:15,152 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ea7de9e6/40bcab3f25294771a9bd2eac97444637/FLAG50711b9f1 [2023-08-03 18:35:15,164 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ea7de9e6/40bcab3f25294771a9bd2eac97444637 [2023-08-03 18:35:15,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:35:15,168 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:35:15,169 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:35:15,169 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:35:15,173 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:35:15,174 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:35:15" (1/1) ... [2023-08-03 18:35:15,175 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d7b0de2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:35:15, skipping insertion in model container [2023-08-03 18:35:15,175 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:35:15" (1/1) ... [2023-08-03 18:35:15,236 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:35:15,409 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe018_rmo.opt_bound2.i[992,1005] [2023-08-03 18:35:15,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:35:15,648 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:35:15,661 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe018_rmo.opt_bound2.i[992,1005] [2023-08-03 18:35:15,679 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 18:35:15,681 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 18:35:15,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:35:15,745 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:35:15,745 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:35:15,751 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:35:15,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:35:15 WrapperNode [2023-08-03 18:35:15,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:35:15,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:35:15,753 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:35:15,753 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:35:15,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:35:15" (1/1) ... [2023-08-03 18:35:15,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:35:15" (1/1) ... [2023-08-03 18:35:15,795 INFO L138 Inliner]: procedures = 176, calls = 73, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 161 [2023-08-03 18:35:15,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:35:15,796 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:35:15,796 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:35:15,796 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:35:15,804 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:35:15" (1/1) ... [2023-08-03 18:35:15,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:35:15" (1/1) ... [2023-08-03 18:35:15,808 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:35:15" (1/1) ... [2023-08-03 18:35:15,808 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:35:15" (1/1) ... [2023-08-03 18:35:15,822 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:35:15" (1/1) ... [2023-08-03 18:35:15,831 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:35:15" (1/1) ... [2023-08-03 18:35:15,834 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:35:15" (1/1) ... [2023-08-03 18:35:15,835 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:35:15" (1/1) ... [2023-08-03 18:35:15,839 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:35:15,840 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:35:15,840 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:35:15,840 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:35:15,841 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:35:15" (1/1) ... [2023-08-03 18:35:15,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:35:15,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:35:15,875 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 18:35:15,892 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 18:35:15,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 18:35:15,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:35:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:35:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:35:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:35:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:35:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:35:15,906 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:35:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:35:15,906 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:35:15,906 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 18:35:15,907 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 18:35:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:35:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:35:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:35:15,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:35:15,908 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 18:35:16,034 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:35:16,036 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:35:16,507 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:35:16,702 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:35:16,703 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 18:35:16,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:35:16 BoogieIcfgContainer [2023-08-03 18:35:16,705 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:35:16,708 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:35:16,708 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:35:16,711 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:35:16,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:35:15" (1/3) ... [2023-08-03 18:35:16,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcf95a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:35:16, skipping insertion in model container [2023-08-03 18:35:16,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:35:15" (2/3) ... [2023-08-03 18:35:16,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcf95a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:35:16, skipping insertion in model container [2023-08-03 18:35:16,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:35:16" (3/3) ... [2023-08-03 18:35:16,716 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe018_rmo.opt_bound2.i [2023-08-03 18:35:16,723 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:35:16,732 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:35:16,732 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 18:35:16,732 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:35:16,792 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:35:16,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 145 transitions, 305 flow [2023-08-03 18:35:16,961 INFO L124 PetriNetUnfolderBase]: 30/463 cut-off events. [2023-08-03 18:35:16,961 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:35:16,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 463 events. 30/463 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1912 event pairs, 0 based on Foata normal form. 0/411 useless extension candidates. Maximal degree in co-relation 284. Up to 16 conditions per place. [2023-08-03 18:35:16,969 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 145 transitions, 305 flow [2023-08-03 18:35:16,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 133 transitions, 281 flow [2023-08-03 18:35:16,978 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:35:16,991 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 133 transitions, 281 flow [2023-08-03 18:35:16,996 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 133 transitions, 281 flow [2023-08-03 18:35:16,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 133 transitions, 281 flow [2023-08-03 18:35:17,062 INFO L124 PetriNetUnfolderBase]: 22/367 cut-off events. [2023-08-03 18:35:17,062 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:35:17,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 367 events. 22/367 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1360 event pairs, 0 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 236. Up to 16 conditions per place. [2023-08-03 18:35:17,069 INFO L119 LiptonReduction]: Number of co-enabled transitions 1806 [2023-08-03 18:35:22,202 INFO L134 LiptonReduction]: Checked pairs total: 4760 [2023-08-03 18:35:22,202 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-03 18:35:22,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:35:22,219 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;@5e194305, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:35:22,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 18:35:22,224 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:35:22,224 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-08-03 18:35:22,224 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:35:22,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:35:22,225 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:35:22,225 INFO L420 AbstractCegarLoop]: === Iteration 1 === 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 18:35:22,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:35:22,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1922330314, now seen corresponding path program 1 times [2023-08-03 18:35:22,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:35:22,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164422327] [2023-08-03 18:35:22,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:35:22,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:35:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:35:22,348 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:35:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:35:22,401 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:35:22,402 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:35:22,403 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 18:35:22,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 18:35:22,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 18:35:22,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 18:35:22,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:35:22,406 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 18:35:22,409 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:35:22,409 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:35:22,472 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:35:22,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 167 transitions, 370 flow [2023-08-03 18:35:22,710 INFO L124 PetriNetUnfolderBase]: 93/1386 cut-off events. [2023-08-03 18:35:22,710 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:35:22,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 1386 events. 93/1386 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9257 event pairs, 0 based on Foata normal form. 0/1227 useless extension candidates. Maximal degree in co-relation 1009. Up to 54 conditions per place. [2023-08-03 18:35:22,717 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 167 transitions, 370 flow [2023-08-03 18:35:22,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 155 transitions, 346 flow [2023-08-03 18:35:22,721 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:35:22,721 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 155 transitions, 346 flow [2023-08-03 18:35:22,722 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 155 transitions, 346 flow [2023-08-03 18:35:22,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 155 transitions, 346 flow [2023-08-03 18:35:22,862 INFO L124 PetriNetUnfolderBase]: 66/1062 cut-off events. [2023-08-03 18:35:22,863 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:35:22,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1160 conditions, 1062 events. 66/1062 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6523 event pairs, 0 based on Foata normal form. 0/957 useless extension candidates. Maximal degree in co-relation 793. Up to 54 conditions per place. [2023-08-03 18:35:22,881 INFO L119 LiptonReduction]: Number of co-enabled transitions 4444 [2023-08-03 18:35:28,249 INFO L134 LiptonReduction]: Checked pairs total: 13644 [2023-08-03 18:35:28,250 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-08-03 18:35:28,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:35:28,253 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;@5e194305, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:35:28,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 18:35:28,258 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:35:28,258 INFO L124 PetriNetUnfolderBase]: 1/29 cut-off events. [2023-08-03 18:35:28,258 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 18:35:28,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:35:28,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:35:28,259 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 18:35:28,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:35:28,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1214340852, now seen corresponding path program 1 times [2023-08-03 18:35:28,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:35:28,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344724519] [2023-08-03 18:35:28,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:35:28,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:35:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:35:28,386 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 18:35:28,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:35:28,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344724519] [2023-08-03 18:35:28,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344724519] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:35:28,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:35:28,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:35:28,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895927198] [2023-08-03 18:35:28,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:35:28,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:35:28,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:35:28,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:35:28,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:35:28,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 283 [2023-08-03 18:35:28,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 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 18:35:28,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:35:28,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 283 [2023-08-03 18:35:28,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:36:11,125 INFO L124 PetriNetUnfolderBase]: 272349/354464 cut-off events. [2023-08-03 18:36:11,126 INFO L125 PetriNetUnfolderBase]: For 5988/5988 co-relation queries the response was YES. [2023-08-03 18:36:11,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 705685 conditions, 354464 events. 272349/354464 cut-off events. For 5988/5988 co-relation queries the response was YES. Maximal size of possible extension queue 7781. Compared 2257783 event pairs, 218772 based on Foata normal form. 8820/342212 useless extension candidates. Maximal degree in co-relation 152557. Up to 343786 conditions per place. [2023-08-03 18:36:13,273 INFO L140 encePairwiseOnDemand]: 279/283 looper letters, 40 selfloop transitions, 2 changer transitions 1/51 dead transitions. [2023-08-03 18:36:13,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 51 transitions, 224 flow [2023-08-03 18:36:13,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:36:13,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:36:13,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 468 transitions. [2023-08-03 18:36:13,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5512367491166078 [2023-08-03 18:36:13,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 468 transitions. [2023-08-03 18:36:13,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 468 transitions. [2023-08-03 18:36:13,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:36:13,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 468 transitions. [2023-08-03 18:36:13,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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 18:36:13,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 18:36:13,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 18:36:13,298 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 130 flow. Second operand 3 states and 468 transitions. [2023-08-03 18:36:13,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 51 transitions, 224 flow [2023-08-03 18:36:13,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 51 transitions, 218 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 18:36:13,310 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 132 flow [2023-08-03 18:36:13,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2023-08-03 18:36:13,314 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 3 predicate places. [2023-08-03 18:36:13,314 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 132 flow [2023-08-03 18:36:13,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 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 18:36:13,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:36:13,315 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 18:36:13,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 18:36:13,315 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 18:36:13,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:36:13,315 INFO L85 PathProgramCache]: Analyzing trace with hash 284016714, now seen corresponding path program 1 times [2023-08-03 18:36:13,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:36:13,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138543024] [2023-08-03 18:36:13,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:36:13,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:36:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:36:13,393 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 18:36:13,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:36:13,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138543024] [2023-08-03 18:36:13,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138543024] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:36:13,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759438606] [2023-08-03 18:36:13,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:36:13,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:36:13,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:36:13,397 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 18:36:13,401 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 18:36:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:36:13,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:36:13,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:36:13,583 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 18:36:13,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:36:13,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759438606] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:36:13,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:36:13,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 18:36:13,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398767288] [2023-08-03 18:36:13,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:36:13,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:36:13,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:36:13,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:36:13,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:36:13,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 283 [2023-08-03 18:36:13,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 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 18:36:13,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:36:13,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 283 [2023-08-03 18:36:13,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:36:49,305 INFO L124 PetriNetUnfolderBase]: 237738/309849 cut-off events. [2023-08-03 18:36:49,305 INFO L125 PetriNetUnfolderBase]: For 5324/5324 co-relation queries the response was YES. [2023-08-03 18:36:50,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617042 conditions, 309849 events. 237738/309849 cut-off events. For 5324/5324 co-relation queries the response was YES. Maximal size of possible extension queue 6840. Compared 1958945 event pairs, 153240 based on Foata normal form. 16/297965 useless extension candidates. Maximal degree in co-relation 162075. Up to 300296 conditions per place. [2023-08-03 18:36:51,129 INFO L140 encePairwiseOnDemand]: 279/283 looper letters, 45 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2023-08-03 18:36:51,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 56 transitions, 250 flow [2023-08-03 18:36:51,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:36:51,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:36:51,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 750 transitions. [2023-08-03 18:36:51,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300353356890459 [2023-08-03 18:36:51,134 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 750 transitions. [2023-08-03 18:36:51,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 750 transitions. [2023-08-03 18:36:51,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:36:51,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 750 transitions. [2023-08-03 18:36:51,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 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 18:36:51,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 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 18:36:51,141 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 283.0) internal successors, (1698), 6 states have internal predecessors, (1698), 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 18:36:51,142 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 132 flow. Second operand 5 states and 750 transitions. [2023-08-03 18:36:51,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 56 transitions, 250 flow [2023-08-03 18:36:51,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 56 transitions, 247 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 18:36:51,144 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 146 flow [2023-08-03 18:36:51,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2023-08-03 18:36:51,146 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 5 predicate places. [2023-08-03 18:36:51,146 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 146 flow [2023-08-03 18:36:51,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 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 18:36:51,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:36:51,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:36:51,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 18:36:51,353 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 18:36:51,354 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 18:36:51,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:36:51,354 INFO L85 PathProgramCache]: Analyzing trace with hash 520407897, now seen corresponding path program 1 times [2023-08-03 18:36:51,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:36:51,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439035828] [2023-08-03 18:36:51,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:36:51,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:36:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:36:51,458 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 18:36:51,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:36:51,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439035828] [2023-08-03 18:36:51,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439035828] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:36:51,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927740298] [2023-08-03 18:36:51,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:36:51,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:36:51,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:36:51,464 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 18:36:51,466 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 18:36:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:36:51,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:36:51,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:36:51,602 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 18:36:51,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:36:51,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927740298] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:36:51,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:36:51,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 18:36:51,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118516430] [2023-08-03 18:36:51,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:36:51,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:36:51,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:36:51,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:36:51,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:36:51,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 283 [2023-08-03 18:36:51,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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 18:36:51,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:36:51,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 283 [2023-08-03 18:36:51,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:37:26,177 INFO L124 PetriNetUnfolderBase]: 230316/305387 cut-off events. [2023-08-03 18:37:26,178 INFO L125 PetriNetUnfolderBase]: For 4980/4980 co-relation queries the response was YES. [2023-08-03 18:37:27,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602681 conditions, 305387 events. 230316/305387 cut-off events. For 4980/4980 co-relation queries the response was YES. Maximal size of possible extension queue 7018. Compared 2012559 event pairs, 185514 based on Foata normal form. 0/295607 useless extension candidates. Maximal degree in co-relation 130073. Up to 289721 conditions per place. [2023-08-03 18:37:28,176 INFO L140 encePairwiseOnDemand]: 280/283 looper letters, 47 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-03 18:37:28,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 57 transitions, 268 flow [2023-08-03 18:37:28,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:37:28,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:37:28,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2023-08-03 18:37:28,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5559481743227326 [2023-08-03 18:37:28,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2023-08-03 18:37:28,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2023-08-03 18:37:28,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:37:28,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2023-08-03 18:37:28,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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 18:37:28,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 18:37:28,183 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 18:37:28,183 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 146 flow. Second operand 3 states and 472 transitions. [2023-08-03 18:37:28,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 57 transitions, 268 flow [2023-08-03 18:37:28,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 57 transitions, 261 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 18:37:28,185 INFO L231 Difference]: Finished difference. Result has 65 places, 47 transitions, 154 flow [2023-08-03 18:37:28,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=65, PETRI_TRANSITIONS=47} [2023-08-03 18:37:28,186 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 6 predicate places. [2023-08-03 18:37:28,186 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 154 flow [2023-08-03 18:37:28,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 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 18:37:28,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:37:28,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:37:28,195 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 18:37:28,392 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 18:37:28,393 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 18:37:28,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:37:28,393 INFO L85 PathProgramCache]: Analyzing trace with hash 372048183, now seen corresponding path program 1 times [2023-08-03 18:37:28,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:37:28,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530023004] [2023-08-03 18:37:28,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:37:28,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:37:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:37:28,486 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 18:37:28,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:37:28,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530023004] [2023-08-03 18:37:28,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530023004] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:37:28,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466444920] [2023-08-03 18:37:28,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:37:28,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:37:28,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:37:28,489 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 18:37:28,491 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 18:37:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:37:28,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:37:28,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:37:28,636 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 18:37:28,636 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:37:28,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466444920] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:37:28,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:37:28,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 18:37:28,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138248986] [2023-08-03 18:37:28,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:37:28,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:37:28,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:37:28,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:37:28,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:37:28,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 283 [2023-08-03 18:37:28,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 47 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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 18:37:28,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:37:28,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 283 [2023-08-03 18:37:28,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:38:03,627 INFO L124 PetriNetUnfolderBase]: 225996/297863 cut-off events. [2023-08-03 18:38:03,627 INFO L125 PetriNetUnfolderBase]: For 2747/2747 co-relation queries the response was YES. [2023-08-03 18:38:04,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 590517 conditions, 297863 events. 225996/297863 cut-off events. For 2747/2747 co-relation queries the response was YES. Maximal size of possible extension queue 7049. Compared 1936647 event pairs, 178716 based on Foata normal form. 0/287847 useless extension candidates. Maximal degree in co-relation 127384. Up to 275203 conditions per place. [2023-08-03 18:38:05,542 INFO L140 encePairwiseOnDemand]: 280/283 looper letters, 55 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-08-03 18:38:05,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 64 transitions, 302 flow [2023-08-03 18:38:05,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:38:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:38:05,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2023-08-03 18:38:05,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630153121319199 [2023-08-03 18:38:05,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2023-08-03 18:38:05,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2023-08-03 18:38:05,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:38:05,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2023-08-03 18:38:05,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 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 18:38:05,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 18:38:05,547 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 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 18:38:05,547 INFO L175 Difference]: Start difference. First operand has 65 places, 47 transitions, 154 flow. Second operand 3 states and 478 transitions. [2023-08-03 18:38:05,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 64 transitions, 302 flow [2023-08-03 18:38:05,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:38:05,552 INFO L231 Difference]: Finished difference. Result has 67 places, 48 transitions, 163 flow [2023-08-03 18:38:05,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=67, PETRI_TRANSITIONS=48} [2023-08-03 18:38:05,553 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2023-08-03 18:38:05,553 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 163 flow [2023-08-03 18:38:05,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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 18:38:05,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:38:05,554 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:38:05,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 18:38:05,759 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 18:38:05,759 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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 18:38:05,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:38:05,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1770466001, now seen corresponding path program 1 times [2023-08-03 18:38:05,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:38:05,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218278049] [2023-08-03 18:38:05,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:05,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:38:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:05,813 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 18:38:05,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:38:05,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218278049] [2023-08-03 18:38:05,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218278049] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:38:05,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845203093] [2023-08-03 18:38:05,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:05,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:38:05,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:38:05,815 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 18:38:05,822 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 18:38:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:05,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:38:05,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:38:05,959 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 18:38:05,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:38:05,980 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 18:38:05,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845203093] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:38:05,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:38:05,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 18:38:05,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051196058] [2023-08-03 18:38:05,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:38:05,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:38:05,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:38:05,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:38:05,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:38:05,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 283 [2023-08-03 18:38:05,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 48 transitions, 163 flow. Second operand has 5 states, 5 states have (on average 142.6) internal successors, (713), 5 states have internal predecessors, (713), 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 18:38:05,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:38:05,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 283 [2023-08-03 18:38:05,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand