/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_mix021_power.oepc_pso.oepc_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:15:11,554 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:15:11,639 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:15:11,645 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:15:11,646 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:15:11,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:15:11,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:15:11,676 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:15:11,677 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:15:11,680 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:15:11,681 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:15:11,681 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:15:11,682 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:15:11,683 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:15:11,684 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:15:11,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:15:11,684 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:15:11,684 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:15:11,685 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:15:11,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:15:11,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:15:11,685 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:15:11,686 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:15:11,686 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:15:11,687 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:15:11,687 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:15:11,688 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:15:11,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:15:11,688 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:15:11,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:15:11,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:15:11,690 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:15:11,690 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:15:11,690 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:15:11,690 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:15:11,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:15:11,691 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:15:11,691 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:15:11,691 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:15:11,691 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:15:11,691 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:15:11,692 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:15:11,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:15:11,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:15:11,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:15:11,964 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:15:11,964 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:15:11,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix021_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:15:13,183 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:15:13,409 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:15:13,410 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix021_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:15:13,423 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21d675bda/6edce401720947f6bc430c50b517a4f6/FLAGc140f17f2 [2023-08-03 17:15:13,436 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21d675bda/6edce401720947f6bc430c50b517a4f6 [2023-08-03 17:15:13,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:15:13,440 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:15:13,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:15:13,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:15:13,447 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:15:13,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:15:13" (1/1) ... [2023-08-03 17:15:13,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@565decc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:15:13, skipping insertion in model container [2023-08-03 17:15:13,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:15:13" (1/1) ... [2023-08-03 17:15:13,510 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:15:13,675 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_mix021_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-03 17:15:13,851 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:15:13,866 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:15:13,876 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_mix021_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-03 17:15:13,896 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:15:13,898 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:15:13,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:15:13,986 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:15:13,986 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:15:13,992 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:15:13,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:15:13 WrapperNode [2023-08-03 17:15:13,993 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:15:13,994 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:15:13,994 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:15:13,994 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:15:14,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:15:13" (1/1) ... [2023-08-03 17:15:14,023 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:15:13" (1/1) ... [2023-08-03 17:15:14,044 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 176 [2023-08-03 17:15:14,045 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:15:14,045 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:15:14,045 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:15:14,046 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:15:14,054 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:15:13" (1/1) ... [2023-08-03 17:15:14,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:15:13" (1/1) ... [2023-08-03 17:15:14,057 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:15:13" (1/1) ... [2023-08-03 17:15:14,057 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:15:13" (1/1) ... [2023-08-03 17:15:14,078 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:15:13" (1/1) ... [2023-08-03 17:15:14,082 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:15:13" (1/1) ... [2023-08-03 17:15:14,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:15:13" (1/1) ... [2023-08-03 17:15:14,085 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:15:13" (1/1) ... [2023-08-03 17:15:14,095 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:15:14,096 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:15:14,096 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:15:14,096 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:15:14,097 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:15:13" (1/1) ... [2023-08-03 17:15:14,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:15:14,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:15:14,121 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 17:15:14,127 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 17:15:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:15:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:15:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:15:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:15:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:15:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:15:14,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:15:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:15:14,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:15:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:15:14,151 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:15:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-03 17:15:14,151 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-03 17:15:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:15:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:15:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:15:14,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:15:14,153 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 17:15:14,288 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:15:14,290 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:15:14,718 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:15:14,877 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:15:14,878 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 17:15:14,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:15:14 BoogieIcfgContainer [2023-08-03 17:15:14,881 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:15:14,883 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:15:14,883 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:15:14,887 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:15:14,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:15:13" (1/3) ... [2023-08-03 17:15:14,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee956c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:15:14, skipping insertion in model container [2023-08-03 17:15:14,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:15:13" (2/3) ... [2023-08-03 17:15:14,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee956c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:15:14, skipping insertion in model container [2023-08-03 17:15:14,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:15:14" (3/3) ... [2023-08-03 17:15:14,890 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix021_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:15:14,896 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:15:14,904 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:15:14,905 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:15:14,905 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:15:14,958 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:15:14,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-03 17:15:15,156 INFO L124 PetriNetUnfolderBase]: 62/932 cut-off events. [2023-08-03 17:15:15,156 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:15:15,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 932 events. 62/932 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5770 event pairs, 0 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 553. Up to 32 conditions per place. [2023-08-03 17:15:15,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 158 transitions, 336 flow [2023-08-03 17:15:15,174 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 158 transitions, 336 flow [2023-08-03 17:15:15,177 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:15:15,188 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 158 transitions, 336 flow [2023-08-03 17:15:15,191 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 158 transitions, 336 flow [2023-08-03 17:15:15,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-03 17:15:15,319 INFO L124 PetriNetUnfolderBase]: 62/932 cut-off events. [2023-08-03 17:15:15,319 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:15:15,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 932 events. 62/932 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5770 event pairs, 0 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 553. Up to 32 conditions per place. [2023-08-03 17:15:15,340 INFO L119 LiptonReduction]: Number of co-enabled transitions 4484 [2023-08-03 17:15:19,111 INFO L134 LiptonReduction]: Checked pairs total: 11404 [2023-08-03 17:15:19,111 INFO L136 LiptonReduction]: Total number of compositions: 132 [2023-08-03 17:15:19,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:15:19,128 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;@5577a9f9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:15:19,128 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 17:15:19,131 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:15:19,131 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-03 17:15:19,131 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:15:19,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:15:19,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:15:19,132 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 17:15:19,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:15:19,136 INFO L85 PathProgramCache]: Analyzing trace with hash 20548959, now seen corresponding path program 1 times [2023-08-03 17:15:19,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:15:19,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875726729] [2023-08-03 17:15:19,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:15:19,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:15:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:15:19,524 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 17:15:19,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:15:19,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875726729] [2023-08-03 17:15:19,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875726729] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:15:19,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:15:19,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:15:19,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232391965] [2023-08-03 17:15:19,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:15:19,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:15:19,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:15:19,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:15:19,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:15:19,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 290 [2023-08-03 17:15:19,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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 17:15:19,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:15:19,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 290 [2023-08-03 17:15:19,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:15:21,822 INFO L124 PetriNetUnfolderBase]: 12873/19871 cut-off events. [2023-08-03 17:15:21,823 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2023-08-03 17:15:21,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38664 conditions, 19871 events. 12873/19871 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 139717 event pairs, 3816 based on Foata normal form. 0/18138 useless extension candidates. Maximal degree in co-relation 32368. Up to 12394 conditions per place. [2023-08-03 17:15:21,943 INFO L140 encePairwiseOnDemand]: 286/290 looper letters, 57 selfloop transitions, 2 changer transitions 2/69 dead transitions. [2023-08-03 17:15:21,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 69 transitions, 289 flow [2023-08-03 17:15:21,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:15:21,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:15:21,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2023-08-03 17:15:21,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5494252873563218 [2023-08-03 17:15:21,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2023-08-03 17:15:21,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2023-08-03 17:15:21,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:15:21,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2023-08-03 17:15:21,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:15:21,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 17:15:21,981 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 17:15:21,982 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 106 flow. Second operand 3 states and 478 transitions. [2023-08-03 17:15:21,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 69 transitions, 289 flow [2023-08-03 17:15:21,985 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 17:15:21,987 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 104 flow [2023-08-03 17:15:21,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, 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 17:15:21,991 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-08-03 17:15:21,991 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 104 flow [2023-08-03 17:15:21,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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 17:15:21,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:15:21,992 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:15:21,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:15:21,993 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 17:15:21,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:15:21,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1727195825, now seen corresponding path program 1 times [2023-08-03 17:15:21,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:15:21,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90659993] [2023-08-03 17:15:21,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:15:21,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:15:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:15:22,008 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:15:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:15:22,033 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:15:22,034 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:15:22,035 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-08-03 17:15:22,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 17:15:22,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 17:15:22,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-03 17:15:22,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-03 17:15:22,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-03 17:15:22,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 17:15:22,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:15:22,038 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:15:22,040 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:15:22,040 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:15:22,073 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:15:22,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 192 transitions, 432 flow [2023-08-03 17:15:22,676 INFO L124 PetriNetUnfolderBase]: 282/4324 cut-off events. [2023-08-03 17:15:22,676 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 17:15:22,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4613 conditions, 4324 events. 282/4324 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42052 event pairs, 0 based on Foata normal form. 0/3839 useless extension candidates. Maximal degree in co-relation 3119. Up to 162 conditions per place. [2023-08-03 17:15:22,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 192 transitions, 432 flow [2023-08-03 17:15:22,706 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 192 transitions, 432 flow [2023-08-03 17:15:22,706 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:15:22,706 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 192 transitions, 432 flow [2023-08-03 17:15:22,706 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 192 transitions, 432 flow [2023-08-03 17:15:22,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 192 transitions, 432 flow [2023-08-03 17:15:23,159 INFO L124 PetriNetUnfolderBase]: 282/4324 cut-off events. [2023-08-03 17:15:23,159 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 17:15:23,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4613 conditions, 4324 events. 282/4324 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42052 event pairs, 0 based on Foata normal form. 0/3839 useless extension candidates. Maximal degree in co-relation 3119. Up to 162 conditions per place. [2023-08-03 17:15:23,281 INFO L119 LiptonReduction]: Number of co-enabled transitions 11008 [2023-08-03 17:15:27,173 INFO L134 LiptonReduction]: Checked pairs total: 36772 [2023-08-03 17:15:27,174 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-03 17:15:27,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:15:27,176 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;@5577a9f9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:15:27,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-03 17:15:27,179 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:15:27,179 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-03 17:15:27,179 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:15:27,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:15:27,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:15:27,180 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 17:15:27,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:15:27,180 INFO L85 PathProgramCache]: Analyzing trace with hash 31819455, now seen corresponding path program 1 times [2023-08-03 17:15:27,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:15:27,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661164336] [2023-08-03 17:15:27,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:15:27,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:15:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:15:27,322 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 17:15:27,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:15:27,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661164336] [2023-08-03 17:15:27,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661164336] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:15:27,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:15:27,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:15:27,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834823414] [2023-08-03 17:15:27,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:15:27,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:15:27,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:15:27,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:15:27,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:15:27,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 331 [2023-08-03 17:15:27,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 186 flow. Second operand has 3 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 17:15:27,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:15:27,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 331 [2023-08-03 17:15:27,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand