/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_mix057_power.oepc_pso.oepc_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:44:26,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:44:26,927 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:44:26,931 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:44:26,931 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:44:26,932 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:44:26,932 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:44:26,951 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:44:26,952 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:44:26,952 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:44:26,953 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:44:26,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:44:26,953 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:44:26,954 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:44:26,954 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:44:26,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:44:26,955 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:44:26,955 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:44:26,956 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:44:26,956 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:44:26,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:44:26,957 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:44:26,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:44:26,957 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:44:26,958 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:44:26,958 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:44:26,958 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:44:26,959 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:44:26,959 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:44:26,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:44:26,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:44:26,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:44:26,960 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:44:26,960 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:44:26,961 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:44:26,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:44:26,961 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:44:26,962 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:44:26,962 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:44:26,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:44:26,962 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:44:26,963 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:44:27,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:44:27,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:44:27,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:44:27,182 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:44:27,182 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:44:27,183 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix057_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:44:28,326 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:44:28,579 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:44:28,579 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix057_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:44:28,603 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75df4e7d4/38784abee9414d98bc70f4e9d545d5c3/FLAG2294df37e [2023-08-03 17:44:28,615 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75df4e7d4/38784abee9414d98bc70f4e9d545d5c3 [2023-08-03 17:44:28,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:44:28,620 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:44:28,621 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:44:28,621 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:44:28,624 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:44:28,625 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:44:28" (1/1) ... [2023-08-03 17:44:28,626 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aca930d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:28, skipping insertion in model container [2023-08-03 17:44:28,626 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:44:28" (1/1) ... [2023-08-03 17:44:28,672 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:44:28,798 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_mix057_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-03 17:44:28,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:44:28,946 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:44:28,956 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_mix057_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-03 17:44:28,964 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:44:28,966 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:44:28,998 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:44:29,025 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:44:29,026 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:44:29,031 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:44:29,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:29 WrapperNode [2023-08-03 17:44:29,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:44:29,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:44:29,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:44:29,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:44:29,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:29" (1/1) ... [2023-08-03 17:44:29,053 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:29" (1/1) ... [2023-08-03 17:44:29,107 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 174 [2023-08-03 17:44:29,108 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:44:29,108 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:44:29,109 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:44:29,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:44:29,116 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:29" (1/1) ... [2023-08-03 17:44:29,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:29" (1/1) ... [2023-08-03 17:44:29,120 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:29" (1/1) ... [2023-08-03 17:44:29,120 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:29" (1/1) ... [2023-08-03 17:44:29,128 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:29" (1/1) ... [2023-08-03 17:44:29,131 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:29" (1/1) ... [2023-08-03 17:44:29,133 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:29" (1/1) ... [2023-08-03 17:44:29,134 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:29" (1/1) ... [2023-08-03 17:44:29,137 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:44:29,138 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:44:29,138 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:44:29,138 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:44:29,139 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:29" (1/1) ... [2023-08-03 17:44:29,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:44:29,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:44:29,174 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 17:44:29,203 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 17:44:29,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:44:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:44:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:44:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:44:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:44:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:44:29,217 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:44:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:44:29,218 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:44:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:44:29,218 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:44:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-03 17:44:29,218 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-03 17:44:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:44:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:44:29,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:44:29,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:44:29,220 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 17:44:29,353 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:44:29,355 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:44:29,639 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:44:29,745 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:44:29,745 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 17:44:29,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:44:29 BoogieIcfgContainer [2023-08-03 17:44:29,749 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:44:29,752 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:44:29,752 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:44:29,755 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:44:29,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:44:28" (1/3) ... [2023-08-03 17:44:29,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506c8816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:44:29, skipping insertion in model container [2023-08-03 17:44:29,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:44:29" (2/3) ... [2023-08-03 17:44:29,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506c8816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:44:29, skipping insertion in model container [2023-08-03 17:44:29,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:44:29" (3/3) ... [2023-08-03 17:44:29,759 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix057_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 17:44:29,766 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:44:29,774 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:44:29,774 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:44:29,775 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:44:29,845 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:44:29,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 155 transitions, 330 flow [2023-08-03 17:44:30,112 INFO L124 PetriNetUnfolderBase]: 62/922 cut-off events. [2023-08-03 17:44:30,112 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:44:30,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 922 events. 62/922 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5649 event pairs, 0 based on Foata normal form. 0/813 useless extension candidates. Maximal degree in co-relation 551. Up to 32 conditions per place. [2023-08-03 17:44:30,121 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 155 transitions, 330 flow [2023-08-03 17:44:30,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 155 transitions, 330 flow [2023-08-03 17:44:30,134 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:44:30,142 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 155 transitions, 330 flow [2023-08-03 17:44:30,144 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 155 transitions, 330 flow [2023-08-03 17:44:30,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 155 transitions, 330 flow [2023-08-03 17:44:30,239 INFO L124 PetriNetUnfolderBase]: 62/922 cut-off events. [2023-08-03 17:44:30,239 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:44:30,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 922 events. 62/922 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5649 event pairs, 0 based on Foata normal form. 0/813 useless extension candidates. Maximal degree in co-relation 551. Up to 32 conditions per place. [2023-08-03 17:44:30,258 INFO L119 LiptonReduction]: Number of co-enabled transitions 4358 [2023-08-03 17:44:33,874 INFO L134 LiptonReduction]: Checked pairs total: 10599 [2023-08-03 17:44:33,875 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-08-03 17:44:33,887 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:44:33,893 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;@5e646187, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:44:33,893 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 17:44:33,897 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:44:33,897 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-03 17:44:33,897 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:44:33,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:44:33,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:44:33,898 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 17:44:33,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:44:33,902 INFO L85 PathProgramCache]: Analyzing trace with hash 20277678, now seen corresponding path program 1 times [2023-08-03 17:44:33,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:44:33,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622770891] [2023-08-03 17:44:33,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:44:33,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:44:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:44:34,260 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 17:44:34,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:44:34,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622770891] [2023-08-03 17:44:34,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622770891] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:44:34,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:44:34,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:44:34,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3822405] [2023-08-03 17:44:34,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:44:34,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:44:34,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:44:34,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:44:34,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:44:34,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 285 [2023-08-03 17:44:34,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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 17:44:34,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:44:34,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 285 [2023-08-03 17:44:34,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:44:36,476 INFO L124 PetriNetUnfolderBase]: 12873/19679 cut-off events. [2023-08-03 17:44:36,477 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2023-08-03 17:44:36,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38504 conditions, 19679 events. 12873/19679 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 136317 event pairs, 3816 based on Foata normal form. 0/18002 useless extension candidates. Maximal degree in co-relation 32288. Up to 12394 conditions per place. [2023-08-03 17:44:36,597 INFO L140 encePairwiseOnDemand]: 281/285 looper letters, 57 selfloop transitions, 2 changer transitions 2/68 dead transitions. [2023-08-03 17:44:36,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 68 transitions, 287 flow [2023-08-03 17:44:36,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:44:36,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:44:36,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2023-08-03 17:44:36,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5485380116959064 [2023-08-03 17:44:36,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions. [2023-08-03 17:44:36,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions. [2023-08-03 17:44:36,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:44:36,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions. [2023-08-03 17:44:36,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 17:44:36,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 17:44:36,622 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 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 17:44:36,623 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 104 flow. Second operand 3 states and 469 transitions. [2023-08-03 17:44:36,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 68 transitions, 287 flow [2023-08-03 17:44:36,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 287 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:44:36,628 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 102 flow [2023-08-03 17:44:36,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2023-08-03 17:44:36,633 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-08-03 17:44:36,633 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 102 flow [2023-08-03 17:44:36,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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 17:44:36,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:44:36,633 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:44:36,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:44:36,634 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:44:36,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:44:36,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1987905617, now seen corresponding path program 1 times [2023-08-03 17:44:36,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:44:36,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421253508] [2023-08-03 17:44:36,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:44:36,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:44:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:44:36,662 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:44:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:44:36,688 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:44:36,692 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:44:36,694 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-08-03 17:44:36,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 17:44:36,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 17:44:36,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-03 17:44:36,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-03 17:44:36,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-03 17:44:36,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 17:44:36,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:44:36,699 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:44:36,701 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:44:36,702 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:44:36,742 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:44:36,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 188 transitions, 424 flow [2023-08-03 17:44:37,379 INFO L124 PetriNetUnfolderBase]: 282/4268 cut-off events. [2023-08-03 17:44:37,380 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 17:44:37,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4557 conditions, 4268 events. 282/4268 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 41174 event pairs, 0 based on Foata normal form. 0/3783 useless extension candidates. Maximal degree in co-relation 3090. Up to 162 conditions per place. [2023-08-03 17:44:37,401 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 188 transitions, 424 flow [2023-08-03 17:44:37,414 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 188 transitions, 424 flow [2023-08-03 17:44:37,414 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:44:37,414 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 188 transitions, 424 flow [2023-08-03 17:44:37,414 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 188 transitions, 424 flow [2023-08-03 17:44:37,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 188 transitions, 424 flow [2023-08-03 17:44:37,936 INFO L124 PetriNetUnfolderBase]: 282/4268 cut-off events. [2023-08-03 17:44:37,936 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 17:44:37,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4557 conditions, 4268 events. 282/4268 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 41174 event pairs, 0 based on Foata normal form. 0/3783 useless extension candidates. Maximal degree in co-relation 3090. Up to 162 conditions per place. [2023-08-03 17:44:38,048 INFO L119 LiptonReduction]: Number of co-enabled transitions 10636 [2023-08-03 17:44:41,644 INFO L134 LiptonReduction]: Checked pairs total: 30583 [2023-08-03 17:44:41,644 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-03 17:44:41,646 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:44:41,647 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;@5e646187, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:44:41,647 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-03 17:44:41,649 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:44:41,649 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-03 17:44:41,649 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:44:41,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:44:41,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:44:41,649 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 17:44:41,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:44:41,650 INFO L85 PathProgramCache]: Analyzing trace with hash 31331684, now seen corresponding path program 1 times [2023-08-03 17:44:41,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:44:41,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216446997] [2023-08-03 17:44:41,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:44:41,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:44:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:44:41,715 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 17:44:41,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:44:41,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216446997] [2023-08-03 17:44:41,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216446997] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:44:41,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:44:41,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:44:41,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929973545] [2023-08-03 17:44:41,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:44:41,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:44:41,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:44:41,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:44:41,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:44:41,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 327 [2023-08-03 17:44:41,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 67 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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 17:44:41,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:44:41,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 327 [2023-08-03 17:44:41,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand