/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_mix006_tso.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:01:51,969 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:01:52,044 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:01:52,049 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:01:52,050 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:01:52,050 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:01:52,050 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:01:52,081 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:01:52,082 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:01:52,082 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:01:52,082 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:01:52,083 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:01:52,083 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:01:52,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:01:52,084 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:01:52,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:01:52,084 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:01:52,085 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:01:52,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:01:52,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:01:52,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:01:52,089 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:01:52,089 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:01:52,089 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:01:52,089 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:01:52,090 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:01:52,090 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:01:52,090 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:01:52,090 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:01:52,091 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:01:52,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:01:52,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:01:52,091 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:01:52,091 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:01:52,092 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:01:52,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:01:52,092 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:01:52,092 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:01:52,092 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:01:52,093 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:01:52,093 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:01:52,095 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:01:52,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:01:52,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:01:52,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:01:52,356 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:01:52,358 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:01:52,359 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix006_tso.oepc_bound2.i [2023-08-03 17:01:53,546 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:01:53,856 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:01:53,857 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix006_tso.oepc_bound2.i [2023-08-03 17:01:53,876 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e060c4a29/67f932c4837647108d80f93c16d506d3/FLAG500d5e1df [2023-08-03 17:01:53,889 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e060c4a29/67f932c4837647108d80f93c16d506d3 [2023-08-03 17:01:53,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:01:53,892 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:01:53,893 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:01:53,893 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:01:53,903 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:01:53,903 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:01:53" (1/1) ... [2023-08-03 17:01:53,904 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63bb89f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:53, skipping insertion in model container [2023-08-03 17:01:53,904 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:01:53" (1/1) ... [2023-08-03 17:01:53,972 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:01:54,112 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_mix006_tso.oepc_bound2.i[949,962] [2023-08-03 17:01:54,333 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:01:54,343 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:01:54,351 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_mix006_tso.oepc_bound2.i[949,962] [2023-08-03 17:01:54,359 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:01:54,360 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:01:54,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:01:54,446 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:01:54,446 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:01:54,451 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:01:54,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:54 WrapperNode [2023-08-03 17:01:54,452 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:01:54,453 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:01:54,453 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:01:54,453 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:01:54,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:54" (1/1) ... [2023-08-03 17:01:54,475 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:54" (1/1) ... [2023-08-03 17:01:54,511 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 288 [2023-08-03 17:01:54,511 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:01:54,512 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:01:54,512 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:01:54,512 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:01:54,540 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:54" (1/1) ... [2023-08-03 17:01:54,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:54" (1/1) ... [2023-08-03 17:01:54,545 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:54" (1/1) ... [2023-08-03 17:01:54,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:54" (1/1) ... [2023-08-03 17:01:54,557 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:54" (1/1) ... [2023-08-03 17:01:54,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:54" (1/1) ... [2023-08-03 17:01:54,563 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:54" (1/1) ... [2023-08-03 17:01:54,565 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:54" (1/1) ... [2023-08-03 17:01:54,570 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:01:54,571 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:01:54,571 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:01:54,571 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:01:54,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:54" (1/1) ... [2023-08-03 17:01:54,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:01:54,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:01:54,626 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 17:01:54,648 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 17:01:54,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:01:54,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:01:54,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:01:54,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:01:54,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:01:54,665 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:01:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:01:54,665 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:01:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:01:54,666 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:01:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:01:54,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:01:54,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:01:54,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:01:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:01:54,668 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 17:01:54,837 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:01:54,840 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:01:55,379 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:01:55,572 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:01:55,572 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 17:01:55,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:01:55 BoogieIcfgContainer [2023-08-03 17:01:55,576 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:01:55,579 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:01:55,580 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:01:55,583 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:01:55,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:01:53" (1/3) ... [2023-08-03 17:01:55,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1fba9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:01:55, skipping insertion in model container [2023-08-03 17:01:55,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:01:54" (2/3) ... [2023-08-03 17:01:55,585 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1fba9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:01:55, skipping insertion in model container [2023-08-03 17:01:55,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:01:55" (3/3) ... [2023-08-03 17:01:55,586 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix006_tso.oepc_bound2.i [2023-08-03 17:01:55,593 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:01:55,601 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:01:55,602 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-03 17:01:55,602 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:01:55,663 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:01:55,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 150 transitions, 315 flow [2023-08-03 17:01:55,860 INFO L124 PetriNetUnfolderBase]: 30/477 cut-off events. [2023-08-03 17:01:55,861 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:01:55,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 477 events. 30/477 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2056 event pairs, 0 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 290. Up to 16 conditions per place. [2023-08-03 17:01:55,868 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 150 transitions, 315 flow [2023-08-03 17:01:55,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 150 transitions, 315 flow [2023-08-03 17:01:55,880 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:01:55,889 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 150 transitions, 315 flow [2023-08-03 17:01:55,895 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 150 transitions, 315 flow [2023-08-03 17:01:55,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 150 transitions, 315 flow [2023-08-03 17:01:55,965 INFO L124 PetriNetUnfolderBase]: 30/477 cut-off events. [2023-08-03 17:01:55,966 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:01:55,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 477 events. 30/477 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2056 event pairs, 0 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 290. Up to 16 conditions per place. [2023-08-03 17:01:55,976 INFO L119 LiptonReduction]: Number of co-enabled transitions 3054 [2023-08-03 17:02:00,782 INFO L134 LiptonReduction]: Checked pairs total: 9239 [2023-08-03 17:02:00,782 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-08-03 17:02:00,794 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:02:00,799 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;@147ef889, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:02:00,799 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-03 17:02:00,804 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:02:00,804 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2023-08-03 17:02:00,804 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:02:00,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:02:00,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:02:00,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 17:02:00,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:02:00,810 INFO L85 PathProgramCache]: Analyzing trace with hash 750035355, now seen corresponding path program 1 times [2023-08-03 17:02:00,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:02:00,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176991467] [2023-08-03 17:02:00,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:02:00,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:02:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:02:01,107 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 17:02:01,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:02:01,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176991467] [2023-08-03 17:02:01,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176991467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:02:01,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:02:01,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:02:01,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249250335] [2023-08-03 17:02:01,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:02:01,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:02:01,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:02:01,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:02:01,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:02:01,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 279 [2023-08-03 17:02:01,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 17:02:01,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:02:01,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 279 [2023-08-03 17:02:01,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:02:02,231 INFO L124 PetriNetUnfolderBase]: 4379/6754 cut-off events. [2023-08-03 17:02:02,231 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-03 17:02:02,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13370 conditions, 6754 events. 4379/6754 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 39091 event pairs, 2816 based on Foata normal form. 224/5686 useless extension candidates. Maximal degree in co-relation 13349. Up to 6464 conditions per place. [2023-08-03 17:02:02,272 INFO L140 encePairwiseOnDemand]: 275/279 looper letters, 34 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-03 17:02:02,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 41 transitions, 169 flow [2023-08-03 17:02:02,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:02:02,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:02:02,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 413 transitions. [2023-08-03 17:02:02,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934289127837515 [2023-08-03 17:02:02,286 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 413 transitions. [2023-08-03 17:02:02,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 413 transitions. [2023-08-03 17:02:02,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:02:02,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 413 transitions. [2023-08-03 17:02:02,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 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 17:02:02,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 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 17:02:02,298 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 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 17:02:02,300 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 91 flow. Second operand 3 states and 413 transitions. [2023-08-03 17:02:02,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 41 transitions, 169 flow [2023-08-03 17:02:02,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 169 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:02:02,304 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 97 flow [2023-08-03 17:02:02,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2023-08-03 17:02:02,308 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2023-08-03 17:02:02,308 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 97 flow [2023-08-03 17:02:02,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 17:02:02,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:02:02,309 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:02:02,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:02:02,309 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 17:02:02,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:02:02,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1770227366, now seen corresponding path program 1 times [2023-08-03 17:02:02,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:02:02,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172885488] [2023-08-03 17:02:02,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:02:02,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:02:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:02:02,330 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:02:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:02:02,358 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:02:02,358 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:02:02,360 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2023-08-03 17:02:02,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-08-03 17:02:02,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-08-03 17:02:02,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-08-03 17:02:02,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2023-08-03 17:02:02,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2023-08-03 17:02:02,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2023-08-03 17:02:02,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2023-08-03 17:02:02,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:02:02,363 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:02:02,365 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:02:02,365 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:02:02,401 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:02:02,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 178 transitions, 392 flow [2023-08-03 17:02:02,612 INFO L124 PetriNetUnfolderBase]: 93/1441 cut-off events. [2023-08-03 17:02:02,613 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:02:02,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1539 conditions, 1441 events. 93/1441 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9927 event pairs, 0 based on Foata normal form. 0/1258 useless extension candidates. Maximal degree in co-relation 1046. Up to 54 conditions per place. [2023-08-03 17:02:02,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 178 transitions, 392 flow [2023-08-03 17:02:02,621 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 178 transitions, 392 flow [2023-08-03 17:02:02,621 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:02:02,621 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 178 transitions, 392 flow [2023-08-03 17:02:02,621 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 178 transitions, 392 flow [2023-08-03 17:02:02,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 178 transitions, 392 flow [2023-08-03 17:02:02,785 INFO L124 PetriNetUnfolderBase]: 93/1441 cut-off events. [2023-08-03 17:02:02,785 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:02:02,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1539 conditions, 1441 events. 93/1441 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9927 event pairs, 0 based on Foata normal form. 0/1258 useless extension candidates. Maximal degree in co-relation 1046. Up to 54 conditions per place. [2023-08-03 17:02:02,824 INFO L119 LiptonReduction]: Number of co-enabled transitions 7500 [2023-08-03 17:02:07,714 INFO L134 LiptonReduction]: Checked pairs total: 26702 [2023-08-03 17:02:07,716 INFO L136 LiptonReduction]: Total number of compositions: 137 [2023-08-03 17:02:07,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:02:07,728 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;@147ef889, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:02:07,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-03 17:02:07,734 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:02:07,734 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2023-08-03 17:02:07,734 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:02:07,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:02:07,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:02:07,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 17:02:07,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:02:07,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1077433708, now seen corresponding path program 1 times [2023-08-03 17:02:07,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:02:07,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050238832] [2023-08-03 17:02:07,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:02:07,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:02:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:02:07,812 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 17:02:07,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:02:07,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050238832] [2023-08-03 17:02:07,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050238832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:02:07,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:02:07,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:02:07,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418137493] [2023-08-03 17:02:07,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:02:07,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:02:07,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:02:07,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:02:07,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:02:07,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 315 [2023-08-03 17:02:07,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 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 17:02:07,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:02:07,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 315 [2023-08-03 17:02:07,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand