/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_mix037_tso.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:30:22,898 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:30:22,957 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:30:22,961 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:30:22,961 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:30:22,962 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:30:22,962 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:30:22,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:30:22,983 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:30:22,985 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:30:22,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:30:22,986 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:30:22,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:30:22,987 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:30:22,987 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:30:22,987 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:30:22,987 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:30:22,987 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:30:22,988 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:30:22,988 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:30:22,988 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:30:22,988 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:30:22,988 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:30:22,988 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:30:22,989 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:30:22,989 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:30:22,989 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:30:22,989 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:30:22,989 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:30:22,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:30:22,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:30:22,990 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:30:22,990 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:30:22,990 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:30:22,991 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:30:22,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:30:22,991 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:30:22,991 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:30:22,991 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:30:22,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:30:22,991 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:30:22,991 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:30:23,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:30:23,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:30:23,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:30:23,189 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:30:23,189 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:30:23,190 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix037_tso.oepc_bound2.i [2023-08-03 17:30:24,108 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:30:24,307 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:30:24,307 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix037_tso.oepc_bound2.i [2023-08-03 17:30:24,323 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/754b59d32/9b858bee9c8b4a299a6cb739b7fb4a42/FLAGe401fae1c [2023-08-03 17:30:24,335 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/754b59d32/9b858bee9c8b4a299a6cb739b7fb4a42 [2023-08-03 17:30:24,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:30:24,341 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:30:24,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:30:24,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:30:24,345 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:30:24,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:30:24" (1/1) ... [2023-08-03 17:30:24,346 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b1cf53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:24, skipping insertion in model container [2023-08-03 17:30:24,346 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:30:24" (1/1) ... [2023-08-03 17:30:24,386 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:30:24,483 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_mix037_tso.oepc_bound2.i[949,962] [2023-08-03 17:30:24,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:30:24,623 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:30:24,632 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_mix037_tso.oepc_bound2.i[949,962] [2023-08-03 17:30:24,648 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:30:24,662 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:30:24,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:30:24,728 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:30:24,729 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:30:24,733 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:30:24,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:24 WrapperNode [2023-08-03 17:30:24,734 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:30:24,735 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:30:24,735 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:30:24,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:30:24,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:24" (1/1) ... [2023-08-03 17:30:24,766 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:24" (1/1) ... [2023-08-03 17:30:24,784 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 195 [2023-08-03 17:30:24,785 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:30:24,785 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:30:24,785 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:30:24,785 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:30:24,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:24" (1/1) ... [2023-08-03 17:30:24,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:24" (1/1) ... [2023-08-03 17:30:24,793 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:24" (1/1) ... [2023-08-03 17:30:24,793 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:24" (1/1) ... [2023-08-03 17:30:24,806 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:24" (1/1) ... [2023-08-03 17:30:24,808 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:24" (1/1) ... [2023-08-03 17:30:24,809 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:24" (1/1) ... [2023-08-03 17:30:24,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:24" (1/1) ... [2023-08-03 17:30:24,813 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:30:24,813 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:30:24,813 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:30:24,813 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:30:24,814 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:24" (1/1) ... [2023-08-03 17:30:24,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:30:24,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:30:24,855 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 17:30:24,859 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 17:30:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:30:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:30:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:30:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:30:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:30:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:30:24,876 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:30:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:30:24,876 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:30:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:30:24,876 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:30:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-03 17:30:24,877 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-03 17:30:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:30:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:30:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:30:24,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:30:24,878 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 17:30:24,972 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:30:24,973 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:30:25,190 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:30:25,278 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:30:25,278 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 17:30:25,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:30:25 BoogieIcfgContainer [2023-08-03 17:30:25,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:30:25,283 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:30:25,283 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:30:25,285 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:30:25,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:30:24" (1/3) ... [2023-08-03 17:30:25,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb05d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:30:25, skipping insertion in model container [2023-08-03 17:30:25,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:30:24" (2/3) ... [2023-08-03 17:30:25,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb05d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:30:25, skipping insertion in model container [2023-08-03 17:30:25,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:30:25" (3/3) ... [2023-08-03 17:30:25,288 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix037_tso.oepc_bound2.i [2023-08-03 17:30:25,294 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:30:25,300 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:30:25,300 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:30:25,300 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:30:25,355 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:30:25,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 161 transitions, 342 flow [2023-08-03 17:30:25,594 INFO L124 PetriNetUnfolderBase]: 62/943 cut-off events. [2023-08-03 17:30:25,594 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:30:25,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 943 events. 62/943 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5865 event pairs, 0 based on Foata normal form. 0/833 useless extension candidates. Maximal degree in co-relation 556. Up to 32 conditions per place. [2023-08-03 17:30:25,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 161 transitions, 342 flow [2023-08-03 17:30:25,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 161 transitions, 342 flow [2023-08-03 17:30:25,610 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:30:25,622 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 161 transitions, 342 flow [2023-08-03 17:30:25,625 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 161 transitions, 342 flow [2023-08-03 17:30:25,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 161 transitions, 342 flow [2023-08-03 17:30:25,709 INFO L124 PetriNetUnfolderBase]: 62/943 cut-off events. [2023-08-03 17:30:25,709 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:30:25,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 943 events. 62/943 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5865 event pairs, 0 based on Foata normal form. 0/833 useless extension candidates. Maximal degree in co-relation 556. Up to 32 conditions per place. [2023-08-03 17:30:25,723 INFO L119 LiptonReduction]: Number of co-enabled transitions 4580 [2023-08-03 17:30:29,101 INFO L134 LiptonReduction]: Checked pairs total: 12596 [2023-08-03 17:30:29,102 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-08-03 17:30:29,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:30:29,114 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;@58a7ccea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:30:29,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 17:30:29,117 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:30:29,117 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-03 17:30:29,117 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:30:29,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:30:29,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:30:29,118 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:30:29,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:30:29,121 INFO L85 PathProgramCache]: Analyzing trace with hash 644233288, now seen corresponding path program 1 times [2023-08-03 17:30:29,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:30:29,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878261759] [2023-08-03 17:30:29,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:30:29,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:30:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:30:29,336 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 17:30:29,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:30:29,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878261759] [2023-08-03 17:30:29,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878261759] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:30:29,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:30:29,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:30:29,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109574993] [2023-08-03 17:30:29,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:30:29,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:30:29,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:30:29,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:30:29,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:30:29,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 292 [2023-08-03 17:30:29,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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 17:30:29,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:30:29,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 292 [2023-08-03 17:30:29,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:30:31,039 INFO L124 PetriNetUnfolderBase]: 14237/21328 cut-off events. [2023-08-03 17:30:31,040 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-08-03 17:30:31,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41675 conditions, 21328 events. 14237/21328 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 142077 event pairs, 9968 based on Foata normal form. 600/18464 useless extension candidates. Maximal degree in co-relation 41653. Up to 19930 conditions per place. [2023-08-03 17:30:31,127 INFO L140 encePairwiseOnDemand]: 288/292 looper letters, 37 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-03 17:30:31,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 48 transitions, 194 flow [2023-08-03 17:30:31,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:30:31,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:30:31,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2023-08-03 17:30:31,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519406392694064 [2023-08-03 17:30:31,136 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2023-08-03 17:30:31,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2023-08-03 17:30:31,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:30:31,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2023-08-03 17:30:31,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:30:31,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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 17:30:31,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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 17:30:31,150 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 110 flow. Second operand 3 states and 455 transitions. [2023-08-03 17:30:31,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 48 transitions, 194 flow [2023-08-03 17:30:31,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 48 transitions, 194 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:30:31,155 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 116 flow [2023-08-03 17:30:31,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2023-08-03 17:30:31,158 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-08-03 17:30:31,158 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 116 flow [2023-08-03 17:30:31,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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 17:30:31,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:30:31,159 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:30:31,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:30:31,159 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:30:31,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:30:31,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1508050678, now seen corresponding path program 1 times [2023-08-03 17:30:31,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:30:31,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442107671] [2023-08-03 17:30:31,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:30:31,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:30:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:30:31,193 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:30:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:30:31,237 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:30:31,237 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:30:31,238 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-08-03 17:30:31,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 17:30:31,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 17:30:31,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-03 17:30:31,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-03 17:30:31,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-03 17:30:31,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 17:30:31,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:30:31,244 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:30:31,246 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:30:31,246 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:30:31,276 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:30:31,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 196 transitions, 440 flow [2023-08-03 17:30:31,664 INFO L124 PetriNetUnfolderBase]: 282/4384 cut-off events. [2023-08-03 17:30:31,664 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 17:30:31,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 4384 events. 282/4384 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 42815 event pairs, 0 based on Foata normal form. 0/3895 useless extension candidates. Maximal degree in co-relation 3152. Up to 162 conditions per place. [2023-08-03 17:30:31,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 196 transitions, 440 flow [2023-08-03 17:30:31,682 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 196 transitions, 440 flow [2023-08-03 17:30:31,682 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:30:31,683 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 196 transitions, 440 flow [2023-08-03 17:30:31,683 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 196 transitions, 440 flow [2023-08-03 17:30:31,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 196 transitions, 440 flow [2023-08-03 17:30:31,957 INFO L124 PetriNetUnfolderBase]: 282/4384 cut-off events. [2023-08-03 17:30:31,957 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 17:30:31,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 4384 events. 282/4384 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 42815 event pairs, 0 based on Foata normal form. 0/3895 useless extension candidates. Maximal degree in co-relation 3152. Up to 162 conditions per place. [2023-08-03 17:30:32,033 INFO L119 LiptonReduction]: Number of co-enabled transitions 11320 [2023-08-03 17:30:35,456 INFO L134 LiptonReduction]: Checked pairs total: 38974 [2023-08-03 17:30:35,458 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-03 17:30:35,461 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:30:35,474 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;@58a7ccea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:30:35,474 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-03 17:30:35,476 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:30:35,476 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2023-08-03 17:30:35,476 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:30:35,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:30:35,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:30:35,477 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-08-03 17:30:35,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:30:35,477 INFO L85 PathProgramCache]: Analyzing trace with hash 997390168, now seen corresponding path program 1 times [2023-08-03 17:30:35,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:30:35,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161449079] [2023-08-03 17:30:35,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:30:35,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:30:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:30:35,531 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 17:30:35,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:30:35,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161449079] [2023-08-03 17:30:35,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161449079] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:30:35,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:30:35,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:30:35,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207969127] [2023-08-03 17:30:35,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:30:35,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:30:35,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:30:35,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:30:35,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:30:35,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 335 [2023-08-03 17:30:35,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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 17:30:35,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:30:35,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 335 [2023-08-03 17:30:35,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand