/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_mix008_tso.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:04:04,962 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:04:04,999 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:04:05,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:04:05,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:04:05,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:04:05,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:04:05,015 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:04:05,016 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:04:05,016 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:04:05,016 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:04:05,017 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:04:05,017 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:04:05,017 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:04:05,018 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:04:05,018 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:04:05,018 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:04:05,018 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:04:05,019 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:04:05,019 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:04:05,019 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:04:05,019 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:04:05,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:04:05,020 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:04:05,020 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:04:05,020 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:04:05,021 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:04:05,021 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:04:05,021 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:04:05,021 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:04:05,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:04:05,022 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:04:05,022 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:04:05,022 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:04:05,022 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:04:05,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:04:05,023 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:04:05,023 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:04:05,023 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:04:05,024 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:04:05,024 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:04:05,024 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:04:05,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:04:05,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:04:05,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:04:05,212 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:04:05,213 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:04:05,214 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix008_tso.oepc_bound2.i [2023-08-03 17:04:06,198 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:04:06,387 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:04:06,388 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix008_tso.oepc_bound2.i [2023-08-03 17:04:06,399 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c539919d6/89319108d2444f34a4c9e4581386933a/FLAGdf8fed381 [2023-08-03 17:04:06,417 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c539919d6/89319108d2444f34a4c9e4581386933a [2023-08-03 17:04:06,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:04:06,419 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:04:06,420 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:04:06,420 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:04:06,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:04:06,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:04:06" (1/1) ... [2023-08-03 17:04:06,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@324874a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:06, skipping insertion in model container [2023-08-03 17:04:06,431 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:04:06" (1/1) ... [2023-08-03 17:04:06,480 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:04:06,602 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_mix008_tso.oepc_bound2.i[949,962] [2023-08-03 17:04:06,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:04:06,819 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:04:06,829 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_mix008_tso.oepc_bound2.i[949,962] [2023-08-03 17:04:06,843 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:04:06,844 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:04:06,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:04:06,911 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:04:06,911 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:04:06,916 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:04:06,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:06 WrapperNode [2023-08-03 17:04:06,916 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:04:06,917 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:04:06,917 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:04:06,917 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:04:06,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:06" (1/1) ... [2023-08-03 17:04:06,933 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:06" (1/1) ... [2023-08-03 17:04:06,960 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 314 [2023-08-03 17:04:06,960 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:04:06,961 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:04:06,961 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:04:06,961 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:04:06,975 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:06" (1/1) ... [2023-08-03 17:04:06,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:06" (1/1) ... [2023-08-03 17:04:06,978 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:06" (1/1) ... [2023-08-03 17:04:06,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:06" (1/1) ... [2023-08-03 17:04:06,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:06" (1/1) ... [2023-08-03 17:04:06,988 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:06" (1/1) ... [2023-08-03 17:04:07,010 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:06" (1/1) ... [2023-08-03 17:04:07,011 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:06" (1/1) ... [2023-08-03 17:04:07,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:04:07,015 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:04:07,015 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:04:07,015 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:04:07,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:06" (1/1) ... [2023-08-03 17:04:07,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:04:07,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:04:07,046 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 17:04:07,066 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 17:04:07,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:04:07,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:04:07,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:04:07,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:04:07,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:04:07,073 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:04:07,073 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:04:07,073 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:04:07,073 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:04:07,073 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:04:07,073 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:04:07,074 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-03 17:04:07,074 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-03 17:04:07,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:04:07,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:04:07,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:04:07,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:04:07,075 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 17:04:07,199 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:04:07,201 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:04:07,552 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:04:07,700 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:04:07,700 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 17:04:07,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:04:07 BoogieIcfgContainer [2023-08-03 17:04:07,704 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:04:07,707 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:04:07,708 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:04:07,710 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:04:07,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:04:06" (1/3) ... [2023-08-03 17:04:07,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c2b21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:04:07, skipping insertion in model container [2023-08-03 17:04:07,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:04:06" (2/3) ... [2023-08-03 17:04:07,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c2b21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:04:07, skipping insertion in model container [2023-08-03 17:04:07,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:04:07" (3/3) ... [2023-08-03 17:04:07,713 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix008_tso.oepc_bound2.i [2023-08-03 17:04:07,723 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:04:07,730 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:04:07,730 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-03 17:04:07,730 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:04:07,788 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:04:07,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 178 transitions, 376 flow [2023-08-03 17:04:07,996 INFO L124 PetriNetUnfolderBase]: 62/965 cut-off events. [2023-08-03 17:04:07,996 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:04:08,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1015 conditions, 965 events. 62/965 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5917 event pairs, 0 based on Foata normal form. 0/845 useless extension candidates. Maximal degree in co-relation 578. Up to 32 conditions per place. [2023-08-03 17:04:08,004 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 178 transitions, 376 flow [2023-08-03 17:04:08,009 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 178 transitions, 376 flow [2023-08-03 17:04:08,011 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:04:08,018 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 178 transitions, 376 flow [2023-08-03 17:04:08,020 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 178 transitions, 376 flow [2023-08-03 17:04:08,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 178 transitions, 376 flow [2023-08-03 17:04:08,110 INFO L124 PetriNetUnfolderBase]: 62/965 cut-off events. [2023-08-03 17:04:08,110 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:04:08,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1015 conditions, 965 events. 62/965 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5917 event pairs, 0 based on Foata normal form. 0/845 useless extension candidates. Maximal degree in co-relation 578. Up to 32 conditions per place. [2023-08-03 17:04:08,126 INFO L119 LiptonReduction]: Number of co-enabled transitions 4486 [2023-08-03 17:04:12,641 INFO L134 LiptonReduction]: Checked pairs total: 12563 [2023-08-03 17:04:12,641 INFO L136 LiptonReduction]: Total number of compositions: 150 [2023-08-03 17:04:12,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:04:12,654 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;@131d24c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:04:12,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-03 17:04:12,657 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:04:12,657 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2023-08-03 17:04:12,657 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:04:12,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:04:12,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 17:04:12,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-03 17:04:12,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:04:12,661 INFO L85 PathProgramCache]: Analyzing trace with hash 285662598, now seen corresponding path program 1 times [2023-08-03 17:04:12,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:04:12,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200414940] [2023-08-03 17:04:12,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:04:12,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:04:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:04:12,846 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 17:04:12,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:04:12,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200414940] [2023-08-03 17:04:12,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200414940] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:04:12,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:04:12,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:04:12,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134747007] [2023-08-03 17:04:12,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:04:12,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:04:12,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:04:12,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:04:12,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:04:12,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 328 [2023-08-03 17:04:12,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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 17:04:12,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:04:12,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 328 [2023-08-03 17:04:12,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:04:15,618 INFO L124 PetriNetUnfolderBase]: 20471/29171 cut-off events. [2023-08-03 17:04:15,618 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-08-03 17:04:15,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57992 conditions, 29171 events. 20471/29171 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 184862 event pairs, 15249 based on Foata normal form. 840/25010 useless extension candidates. Maximal degree in co-relation 57972. Up to 28305 conditions per place. [2023-08-03 17:04:15,776 INFO L140 encePairwiseOnDemand]: 324/328 looper letters, 39 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-03 17:04:15,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 198 flow [2023-08-03 17:04:15,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:04:15,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:04:15,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-03 17:04:15,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040650406504065 [2023-08-03 17:04:15,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-03 17:04:15,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-03 17:04:15,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:04:15,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-03 17:04:15,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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 17:04:15,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 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 17:04:15,798 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 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 17:04:15,799 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 112 flow. Second operand 3 states and 496 transitions. [2023-08-03 17:04:15,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 198 flow [2023-08-03 17:04:15,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 48 transitions, 198 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:04:15,804 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 118 flow [2023-08-03 17:04:15,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2023-08-03 17:04:15,808 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-03 17:04:15,808 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 118 flow [2023-08-03 17:04:15,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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 17:04:15,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:04:15,808 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:04:15,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:04:15,809 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-03 17:04:15,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:04:15,809 INFO L85 PathProgramCache]: Analyzing trace with hash 302485312, now seen corresponding path program 1 times [2023-08-03 17:04:15,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:04:15,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109575035] [2023-08-03 17:04:15,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:04:15,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:04:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:04:15,826 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:04:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:04:15,854 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:04:15,855 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:04:15,856 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-08-03 17:04:15,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-08-03 17:04:15,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2023-08-03 17:04:15,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2023-08-03 17:04:15,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2023-08-03 17:04:15,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 9 remaining) [2023-08-03 17:04:15,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-08-03 17:04:15,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-08-03 17:04:15,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-08-03 17:04:15,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:04:15,859 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:04:15,860 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:04:15,860 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:04:15,895 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:04:15,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 213 transitions, 474 flow [2023-08-03 17:04:16,475 INFO L124 PetriNetUnfolderBase]: 282/4429 cut-off events. [2023-08-03 17:04:16,475 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 17:04:16,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4718 conditions, 4429 events. 282/4429 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 43226 event pairs, 0 based on Foata normal form. 0/3874 useless extension candidates. Maximal degree in co-relation 3197. Up to 162 conditions per place. [2023-08-03 17:04:16,489 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 213 transitions, 474 flow [2023-08-03 17:04:16,496 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 213 transitions, 474 flow [2023-08-03 17:04:16,496 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:04:16,496 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 213 transitions, 474 flow [2023-08-03 17:04:16,497 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 213 transitions, 474 flow [2023-08-03 17:04:16,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 213 transitions, 474 flow [2023-08-03 17:04:16,842 INFO L124 PetriNetUnfolderBase]: 282/4429 cut-off events. [2023-08-03 17:04:16,842 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 17:04:16,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4718 conditions, 4429 events. 282/4429 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 43226 event pairs, 0 based on Foata normal form. 0/3874 useless extension candidates. Maximal degree in co-relation 3197. Up to 162 conditions per place. [2023-08-03 17:04:16,921 INFO L119 LiptonReduction]: Number of co-enabled transitions 11120 [2023-08-03 17:04:21,830 INFO L134 LiptonReduction]: Checked pairs total: 35414 [2023-08-03 17:04:21,830 INFO L136 LiptonReduction]: Total number of compositions: 160 [2023-08-03 17:04:21,832 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:04:21,833 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;@131d24c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:04:21,833 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-03 17:04:21,835 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:04:21,835 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2023-08-03 17:04:21,835 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:04:21,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:04:21,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 17:04:21,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-08-03 17:04:21,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:04:21,835 INFO L85 PathProgramCache]: Analyzing trace with hash -525465801, now seen corresponding path program 1 times [2023-08-03 17:04:21,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:04:21,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503705233] [2023-08-03 17:04:21,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:04:21,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:04:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:04:21,918 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 17:04:21,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:04:21,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503705233] [2023-08-03 17:04:21,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503705233] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:04:21,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:04:21,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:04:21,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486030027] [2023-08-03 17:04:21,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:04:21,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:04:21,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:04:21,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:04:21,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:04:21,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 373 [2023-08-03 17:04:21,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 70 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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 17:04:21,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:04:21,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 373 [2023-08-03 17:04:21,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand