/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_mix039.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:31:39,306 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:31:39,372 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:31:39,378 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:31:39,379 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:31:39,379 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:31:39,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:31:39,413 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:31:39,414 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:31:39,417 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:31:39,418 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:31:39,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:31:39,419 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:31:39,420 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:31:39,420 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:31:39,421 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:31:39,421 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:31:39,421 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:31:39,421 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:31:39,421 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:31:39,422 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:31:39,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:31:39,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:31:39,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:31:39,426 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:31:39,426 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:31:39,427 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:31:39,427 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:31:39,427 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:31:39,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:31:39,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:31:39,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:31:39,429 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:31:39,429 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:31:39,429 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:31:39,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:31:39,429 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:31:39,429 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:31:39,429 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:31:39,430 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:31:39,430 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:31:39,430 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:31:39,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:31:39,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:31:39,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:31:39,691 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:31:39,692 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:31:39,693 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix039.oepc_bound2.i [2023-08-03 17:31:40,868 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:31:41,100 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:31:41,101 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix039.oepc_bound2.i [2023-08-03 17:31:41,118 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3e7b83c6/717701c2cde44d5fb4296dfaae23e8a0/FLAGb5e3f22fa [2023-08-03 17:31:41,134 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3e7b83c6/717701c2cde44d5fb4296dfaae23e8a0 [2023-08-03 17:31:41,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:31:41,137 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:31:41,138 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:31:41,138 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:31:41,144 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:31:41,144 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:31:41" (1/1) ... [2023-08-03 17:31:41,145 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7807ba90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:31:41, skipping insertion in model container [2023-08-03 17:31:41,146 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:31:41" (1/1) ... [2023-08-03 17:31:41,188 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:31:41,323 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_mix039.oepc_bound2.i[945,958] [2023-08-03 17:31:41,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:31:41,519 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:31:41,530 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_mix039.oepc_bound2.i[945,958] [2023-08-03 17:31:41,550 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:31:41,551 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:31:41,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:31:41,621 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:31:41,622 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:31:41,628 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:31:41,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:31:41 WrapperNode [2023-08-03 17:31:41,628 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:31:41,629 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:31:41,629 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:31:41,629 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:31:41,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:31:41" (1/1) ... [2023-08-03 17:31:41,658 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:31:41" (1/1) ... [2023-08-03 17:31:41,686 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 178 [2023-08-03 17:31:41,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:31:41,687 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:31:41,687 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:31:41,687 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:31:41,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:31:41" (1/1) ... [2023-08-03 17:31:41,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:31:41" (1/1) ... [2023-08-03 17:31:41,698 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:31:41" (1/1) ... [2023-08-03 17:31:41,699 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:31:41" (1/1) ... [2023-08-03 17:31:41,708 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:31:41" (1/1) ... [2023-08-03 17:31:41,711 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:31:41" (1/1) ... [2023-08-03 17:31:41,713 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:31:41" (1/1) ... [2023-08-03 17:31:41,715 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:31:41" (1/1) ... [2023-08-03 17:31:41,718 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:31:41,719 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:31:41,719 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:31:41,719 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:31:41,720 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:31:41" (1/1) ... [2023-08-03 17:31:41,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:31:41,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:31:41,753 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 17:31:41,756 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 17:31:41,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:31:41,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:31:41,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:31:41,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:31:41,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:31:41,788 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:31:41,788 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:31:41,788 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:31:41,788 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:31:41,789 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:31:41,789 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:31:41,789 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-03 17:31:41,789 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-03 17:31:41,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:31:41,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:31:41,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:31:41,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:31:41,791 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 17:31:41,916 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:31:41,918 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:31:42,322 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:31:42,444 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:31:42,444 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 17:31:42,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:31:42 BoogieIcfgContainer [2023-08-03 17:31:42,447 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:31:42,450 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:31:42,450 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:31:42,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:31:42,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:31:41" (1/3) ... [2023-08-03 17:31:42,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7071d309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:31:42, skipping insertion in model container [2023-08-03 17:31:42,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:31:41" (2/3) ... [2023-08-03 17:31:42,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7071d309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:31:42, skipping insertion in model container [2023-08-03 17:31:42,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:31:42" (3/3) ... [2023-08-03 17:31:42,457 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix039.oepc_bound2.i [2023-08-03 17:31:42,464 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:31:42,472 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:31:42,473 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:31:42,473 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:31:42,541 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:31:42,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 161 transitions, 342 flow [2023-08-03 17:31:42,750 INFO L124 PetriNetUnfolderBase]: 62/942 cut-off events. [2023-08-03 17:31:42,750 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:31:42,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 942 events. 62/942 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5849 event pairs, 0 based on Foata normal form. 0/833 useless extension candidates. Maximal degree in co-relation 555. Up to 32 conditions per place. [2023-08-03 17:31:42,758 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 161 transitions, 342 flow [2023-08-03 17:31:42,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 161 transitions, 342 flow [2023-08-03 17:31:42,768 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:31:42,775 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 161 transitions, 342 flow [2023-08-03 17:31:42,777 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 161 transitions, 342 flow [2023-08-03 17:31:42,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 161 transitions, 342 flow [2023-08-03 17:31:42,897 INFO L124 PetriNetUnfolderBase]: 62/942 cut-off events. [2023-08-03 17:31:42,898 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:31:42,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 942 events. 62/942 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5849 event pairs, 0 based on Foata normal form. 0/833 useless extension candidates. Maximal degree in co-relation 555. Up to 32 conditions per place. [2023-08-03 17:31:42,912 INFO L119 LiptonReduction]: Number of co-enabled transitions 4610 [2023-08-03 17:31:46,709 INFO L134 LiptonReduction]: Checked pairs total: 11307 [2023-08-03 17:31:46,709 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-03 17:31:46,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:31:46,727 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;@5d8d3056, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:31:46,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 17:31:46,730 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:31:46,730 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-03 17:31:46,730 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:31:46,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:31:46,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:31:46,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:31:46,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:31:46,736 INFO L85 PathProgramCache]: Analyzing trace with hash 20835630, now seen corresponding path program 1 times [2023-08-03 17:31:46,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:31:46,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856121062] [2023-08-03 17:31:46,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:31:46,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:31:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:31:47,109 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 17:31:47,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:31:47,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856121062] [2023-08-03 17:31:47,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856121062] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:31:47,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:31:47,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:31:47,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975064088] [2023-08-03 17:31:47,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:31:47,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:31:47,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:31:47,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:31:47,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:31:47,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 294 [2023-08-03 17:31:47,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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 17:31:47,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:31:47,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 294 [2023-08-03 17:31:47,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:31:49,375 INFO L124 PetriNetUnfolderBase]: 12873/19865 cut-off events. [2023-08-03 17:31:49,375 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-08-03 17:31:49,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38662 conditions, 19865 events. 12873/19865 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 140152 event pairs, 3816 based on Foata normal form. 0/18192 useless extension candidates. Maximal degree in co-relation 32367. Up to 12394 conditions per place. [2023-08-03 17:31:49,515 INFO L140 encePairwiseOnDemand]: 290/294 looper letters, 57 selfloop transitions, 2 changer transitions 2/69 dead transitions. [2023-08-03 17:31:49,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 69 transitions, 289 flow [2023-08-03 17:31:49,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:31:49,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:31:49,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-03 17:31:49,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5521541950113379 [2023-08-03 17:31:49,528 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-03 17:31:49,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-03 17:31:49,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:31:49,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-03 17:31:49,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 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 17:31:49,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 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 17:31:49,544 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 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 17:31:49,546 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 106 flow. Second operand 3 states and 487 transitions. [2023-08-03 17:31:49,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 69 transitions, 289 flow [2023-08-03 17:31:49,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 69 transitions, 289 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:31:49,554 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 104 flow [2023-08-03 17:31:49,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-08-03 17:31:49,559 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-08-03 17:31:49,560 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 104 flow [2023-08-03 17:31:49,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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 17:31:49,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:31:49,561 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:31:49,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:31:49,561 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:31:49,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:31:49,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1451714006, now seen corresponding path program 1 times [2023-08-03 17:31:49,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:31:49,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932519265] [2023-08-03 17:31:49,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:31:49,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:31:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:31:49,593 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:31:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:31:49,628 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:31:49,628 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:31:49,629 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-08-03 17:31:49,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 17:31:49,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 17:31:49,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-03 17:31:49,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-03 17:31:49,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-03 17:31:49,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 17:31:49,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:31:49,634 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:31:49,636 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:31:49,637 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:31:49,670 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:31:49,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 196 transitions, 440 flow [2023-08-03 17:31:50,346 INFO L124 PetriNetUnfolderBase]: 282/4380 cut-off events. [2023-08-03 17:31:50,347 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 17:31:50,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4669 conditions, 4380 events. 282/4380 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 42758 event pairs, 0 based on Foata normal form. 0/3895 useless extension candidates. Maximal degree in co-relation 3148. Up to 162 conditions per place. [2023-08-03 17:31:50,380 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 196 transitions, 440 flow [2023-08-03 17:31:50,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 196 transitions, 440 flow [2023-08-03 17:31:50,390 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:31:50,390 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 196 transitions, 440 flow [2023-08-03 17:31:50,391 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 196 transitions, 440 flow [2023-08-03 17:31:50,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 196 transitions, 440 flow [2023-08-03 17:31:50,978 INFO L124 PetriNetUnfolderBase]: 282/4380 cut-off events. [2023-08-03 17:31:50,978 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 17:31:50,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4669 conditions, 4380 events. 282/4380 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 42758 event pairs, 0 based on Foata normal form. 0/3895 useless extension candidates. Maximal degree in co-relation 3148. Up to 162 conditions per place. [2023-08-03 17:31:51,060 INFO L119 LiptonReduction]: Number of co-enabled transitions 11384 [2023-08-03 17:31:54,924 INFO L134 LiptonReduction]: Checked pairs total: 38390 [2023-08-03 17:31:54,924 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-08-03 17:31:54,926 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:31:54,927 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;@5d8d3056, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:31:54,927 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-03 17:31:54,929 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:31:54,929 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-03 17:31:54,929 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:31:54,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:31:54,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:31:54,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-08-03 17:31:54,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:31:54,930 INFO L85 PathProgramCache]: Analyzing trace with hash 32338870, now seen corresponding path program 1 times [2023-08-03 17:31:54,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:31:54,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928425271] [2023-08-03 17:31:54,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:31:54,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:31:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:31:55,079 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 17:31:55,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:31:55,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928425271] [2023-08-03 17:31:55,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928425271] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:31:55,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:31:55,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:31:55,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103654020] [2023-08-03 17:31:55,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:31:55,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:31:55,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:31:55,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:31:55,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:31:55,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 339 [2023-08-03 17:31:55,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 71 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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 17:31:55,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:31:55,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 339 [2023-08-03 17:31:55,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand