./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix014.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix014.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 615dc0a4278e77a094a63ed4629507c6f8d1cda73abba57cd69e8912d83fe5fd --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:13:31,004 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:13:31,074 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:13:31,079 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:13:31,080 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:13:31,106 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:13:31,107 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:13:31,107 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:13:31,108 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:13:31,109 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:13:31,110 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:13:31,110 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:13:31,111 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:13:31,111 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:13:31,111 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:13:31,113 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:13:31,114 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:13:31,114 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:13:31,114 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:13:31,114 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:13:31,115 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:13:31,115 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:13:31,115 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:13:31,116 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:13:31,117 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:13:31,117 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:13:31,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:13:31,117 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:13:31,117 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:13:31,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:13:31,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:13:31,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:13:31,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:13:31,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:13:31,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:13:31,120 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:13:31,120 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:13:31,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:13:31,120 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:13:31,121 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:13:31,121 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:13:31,121 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:13:31,121 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 615dc0a4278e77a094a63ed4629507c6f8d1cda73abba57cd69e8912d83fe5fd [2024-10-24 12:13:31,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:13:31,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:13:31,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:13:31,431 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:13:31,432 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:13:31,433 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix014.opt.i [2024-10-24 12:13:32,914 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:13:33,151 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:13:33,154 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix014.opt.i [2024-10-24 12:13:33,175 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/661535ca8/55ed0abf50914b279f9cbc431bf8272a/FLAG44d4bc97f [2024-10-24 12:13:33,203 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/661535ca8/55ed0abf50914b279f9cbc431bf8272a [2024-10-24 12:13:33,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:13:33,210 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:13:33,211 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:13:33,211 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:13:33,215 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:13:33,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:13:33" (1/1) ... [2024-10-24 12:13:33,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f2dfde4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:13:33, skipping insertion in model container [2024-10-24 12:13:33,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:13:33" (1/1) ... [2024-10-24 12:13:33,282 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:13:33,422 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix014.opt.i[944,957] [2024-10-24 12:13:33,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:13:33,629 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:13:33,640 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix014.opt.i[944,957] [2024-10-24 12:13:33,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:13:33,718 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:13:33,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:13:33 WrapperNode [2024-10-24 12:13:33,719 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:13:33,720 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:13:33,720 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:13:33,720 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:13:33,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:13:33" (1/1) ... [2024-10-24 12:13:33,766 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:13:33" (1/1) ... [2024-10-24 12:13:33,818 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 151 [2024-10-24 12:13:33,818 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:13:33,819 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:13:33,819 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:13:33,819 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:13:33,834 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:13:33" (1/1) ... [2024-10-24 12:13:33,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:13:33" (1/1) ... [2024-10-24 12:13:33,839 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:13:33" (1/1) ... [2024-10-24 12:13:33,869 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 12:13:33,870 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:13:33" (1/1) ... [2024-10-24 12:13:33,870 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:13:33" (1/1) ... [2024-10-24 12:13:33,879 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:13:33" (1/1) ... [2024-10-24 12:13:33,881 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:13:33" (1/1) ... [2024-10-24 12:13:33,887 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:13:33" (1/1) ... [2024-10-24 12:13:33,888 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:13:33" (1/1) ... [2024-10-24 12:13:33,893 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:13:33,911 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:13:33,911 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:13:33,911 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:13:33,912 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:13:33" (1/1) ... [2024-10-24 12:13:33,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:13:33,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:13:33,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 12:13:33,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 12:13:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 12:13:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:13:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-24 12:13:34,021 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-24 12:13:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-24 12:13:34,021 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-24 12:13:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-24 12:13:34,022 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-24 12:13:34,022 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-24 12:13:34,022 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-24 12:13:34,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:13:34,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 12:13:34,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:13:34,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:13:34,027 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:13:34,220 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:13:34,223 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:13:34,729 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:13:34,730 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:13:34,907 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:13:34,907 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 12:13:34,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:13:34 BoogieIcfgContainer [2024-10-24 12:13:34,908 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:13:34,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:13:34,912 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:13:34,915 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:13:34,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:13:33" (1/3) ... [2024-10-24 12:13:34,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c609729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:13:34, skipping insertion in model container [2024-10-24 12:13:34,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:13:33" (2/3) ... [2024-10-24 12:13:34,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c609729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:13:34, skipping insertion in model container [2024-10-24 12:13:34,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:13:34" (3/3) ... [2024-10-24 12:13:34,918 INFO L112 eAbstractionObserver]: Analyzing ICFG mix014.opt.i [2024-10-24 12:13:34,932 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:13:34,933 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 12:13:34,933 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:13:34,993 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 12:13:35,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-10-24 12:13:35,056 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-10-24 12:13:35,056 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:13:35,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 98 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-10-24 12:13:35,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-10-24 12:13:35,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-10-24 12:13:35,080 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:13:35,088 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@222fac6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:13:35,088 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-24 12:13:35,101 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:13:35,102 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2024-10-24 12:13:35,102 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:13:35,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:13:35,103 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:13:35,104 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:13:35,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:13:35,109 INFO L85 PathProgramCache]: Analyzing trace with hash 95972689, now seen corresponding path program 1 times [2024-10-24 12:13:35,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:13:35,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209928290] [2024-10-24 12:13:35,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:13:35,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:13:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:13:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:13:35,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:13:35,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209928290] [2024-10-24 12:13:35,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209928290] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:13:35,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:13:35,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 12:13:35,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257965163] [2024-10-24 12:13:35,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:13:35,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:13:35,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:13:35,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:13:35,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:13:35,557 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 50 [2024-10-24 12:13:35,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2024-10-24 12:13:35,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:13:35,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 50 [2024-10-24 12:13:35,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:13:35,899 INFO L124 PetriNetUnfolderBase]: 879/1525 cut-off events. [2024-10-24 12:13:35,899 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:13:35,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2845 conditions, 1525 events. 879/1525 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 10738 event pairs, 159 based on Foata normal form. 60/1529 useless extension candidates. Maximal degree in co-relation 2833. Up to 1009 conditions per place. [2024-10-24 12:13:35,918 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 26 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2024-10-24 12:13:35,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 178 flow [2024-10-24 12:13:35,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:13:35,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:13:35,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-10-24 12:13:35,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.76 [2024-10-24 12:13:35,930 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 114 transitions. [2024-10-24 12:13:35,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 178 flow [2024-10-24 12:13:35,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 174 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 12:13:35,937 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-10-24 12:13:35,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-10-24 12:13:35,942 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-10-24 12:13:35,943 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-10-24 12:13:35,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2024-10-24 12:13:35,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:13:35,944 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:13:35,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:13:35,945 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:13:35,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:13:35,945 INFO L85 PathProgramCache]: Analyzing trace with hash 985671537, now seen corresponding path program 1 times [2024-10-24 12:13:35,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:13:35,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738318742] [2024-10-24 12:13:35,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:13:35,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:13:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:13:36,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:13:36,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:13:36,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738318742] [2024-10-24 12:13:36,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738318742] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:13:36,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:13:36,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:13:36,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853006091] [2024-10-24 12:13:36,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:13:36,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:13:36,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:13:36,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:13:36,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:13:36,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-10-24 12:13:36,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2024-10-24 12:13:36,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:13:36,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-10-24 12:13:36,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:13:38,997 INFO L124 PetriNetUnfolderBase]: 13596/20528 cut-off events. [2024-10-24 12:13:38,998 INFO L125 PetriNetUnfolderBase]: For 791/791 co-relation queries the response was YES. [2024-10-24 12:13:39,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40200 conditions, 20528 events. 13596/20528 cut-off events. For 791/791 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 153648 event pairs, 3756 based on Foata normal form. 0/19853 useless extension candidates. Maximal degree in co-relation 40190. Up to 8364 conditions per place. [2024-10-24 12:13:39,125 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 41 selfloop transitions, 8 changer transitions 84/148 dead transitions. [2024-10-24 12:13:39,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 148 transitions, 592 flow [2024-10-24 12:13:39,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:13:39,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 12:13:39,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 306 transitions. [2024-10-24 12:13:39,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-10-24 12:13:39,128 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 306 transitions. [2024-10-24 12:13:39,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 148 transitions, 592 flow [2024-10-24 12:13:39,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 148 transitions, 574 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 12:13:39,140 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 204 flow [2024-10-24 12:13:39,141 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=204, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2024-10-24 12:13:39,141 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-10-24 12:13:39,142 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 204 flow [2024-10-24 12:13:39,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2024-10-24 12:13:39,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:13:39,142 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:13:39,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:13:39,143 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:13:39,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:13:39,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1538962894, now seen corresponding path program 1 times [2024-10-24 12:13:39,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:13:39,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938607538] [2024-10-24 12:13:39,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:13:39,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:13:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:13:39,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:13:39,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:13:39,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938607538] [2024-10-24 12:13:39,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938607538] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:13:39,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:13:39,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:13:39,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863058503] [2024-10-24 12:13:39,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:13:39,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:13:39,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:13:39,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:13:39,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:13:39,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-10-24 12:13:39,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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) [2024-10-24 12:13:39,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:13:39,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-10-24 12:13:39,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:13:41,208 INFO L124 PetriNetUnfolderBase]: 9570/15211 cut-off events. [2024-10-24 12:13:41,209 INFO L125 PetriNetUnfolderBase]: For 23262/23406 co-relation queries the response was YES. [2024-10-24 12:13:41,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46736 conditions, 15211 events. 9570/15211 cut-off events. For 23262/23406 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 115866 event pairs, 1812 based on Foata normal form. 420/15554 useless extension candidates. Maximal degree in co-relation 46718. Up to 5580 conditions per place. [2024-10-24 12:13:41,289 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 50 selfloop transitions, 9 changer transitions 76/150 dead transitions. [2024-10-24 12:13:41,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 150 transitions, 1006 flow [2024-10-24 12:13:41,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 12:13:41,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 12:13:41,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 312 transitions. [2024-10-24 12:13:41,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.624 [2024-10-24 12:13:41,292 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 204 flow. Second operand 10 states and 312 transitions. [2024-10-24 12:13:41,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 150 transitions, 1006 flow [2024-10-24 12:13:41,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 150 transitions, 856 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-10-24 12:13:41,400 INFO L231 Difference]: Finished difference. Result has 75 places, 54 transitions, 270 flow [2024-10-24 12:13:41,401 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=270, PETRI_PLACES=75, PETRI_TRANSITIONS=54} [2024-10-24 12:13:41,401 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2024-10-24 12:13:41,401 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 54 transitions, 270 flow [2024-10-24 12:13:41,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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) [2024-10-24 12:13:41,402 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:13:41,402 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:13:41,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 12:13:41,406 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:13:41,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:13:41,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1545371193, now seen corresponding path program 1 times [2024-10-24 12:13:41,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:13:41,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152901595] [2024-10-24 12:13:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:13:41,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:13:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:13:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:13:41,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:13:41,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152901595] [2024-10-24 12:13:41,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152901595] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:13:41,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:13:41,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:13:41,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186218089] [2024-10-24 12:13:41,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:13:41,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:13:41,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:13:41,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:13:41,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:13:41,816 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2024-10-24 12:13:41,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 54 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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) [2024-10-24 12:13:41,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:13:41,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2024-10-24 12:13:41,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:13:43,009 INFO L124 PetriNetUnfolderBase]: 5446/9707 cut-off events. [2024-10-24 12:13:43,010 INFO L125 PetriNetUnfolderBase]: For 17996/18569 co-relation queries the response was YES. [2024-10-24 12:13:43,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29292 conditions, 9707 events. 5446/9707 cut-off events. For 17996/18569 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 82140 event pairs, 1500 based on Foata normal form. 294/9472 useless extension candidates. Maximal degree in co-relation 29267. Up to 4079 conditions per place. [2024-10-24 12:13:43,078 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 41 selfloop transitions, 4 changer transitions 33/104 dead transitions. [2024-10-24 12:13:43,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 104 transitions, 658 flow [2024-10-24 12:13:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:13:43,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 12:13:43,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-10-24 12:13:43,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6485714285714286 [2024-10-24 12:13:43,081 INFO L175 Difference]: Start difference. First operand has 75 places, 54 transitions, 270 flow. Second operand 7 states and 227 transitions. [2024-10-24 12:13:43,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 104 transitions, 658 flow [2024-10-24 12:13:43,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 104 transitions, 625 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-10-24 12:13:43,212 INFO L231 Difference]: Finished difference. Result has 75 places, 54 transitions, 273 flow [2024-10-24 12:13:43,212 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=273, PETRI_PLACES=75, PETRI_TRANSITIONS=54} [2024-10-24 12:13:43,213 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2024-10-24 12:13:43,214 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 54 transitions, 273 flow [2024-10-24 12:13:43,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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) [2024-10-24 12:13:43,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:13:43,215 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:13:43,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 12:13:43,215 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:13:43,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:13:43,216 INFO L85 PathProgramCache]: Analyzing trace with hash 399206426, now seen corresponding path program 1 times [2024-10-24 12:13:43,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:13:43,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785041276] [2024-10-24 12:13:43,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:13:43,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:13:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:13:43,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:13:43,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:13:43,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785041276] [2024-10-24 12:13:43,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785041276] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:13:43,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:13:43,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:13:43,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163640486] [2024-10-24 12:13:43,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:13:43,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:13:43,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:13:43,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:13:43,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:13:43,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-10-24 12:13:43,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 54 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2024-10-24 12:13:43,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:13:43,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-10-24 12:13:43,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:13:46,081 INFO L124 PetriNetUnfolderBase]: 16182/24228 cut-off events. [2024-10-24 12:13:46,082 INFO L125 PetriNetUnfolderBase]: For 29296/33056 co-relation queries the response was YES. [2024-10-24 12:13:46,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64175 conditions, 24228 events. 16182/24228 cut-off events. For 29296/33056 co-relation queries the response was YES. Maximal size of possible extension queue 1411. Compared 180245 event pairs, 3215 based on Foata normal form. 986/23870 useless extension candidates. Maximal degree in co-relation 64148. Up to 12004 conditions per place. [2024-10-24 12:13:46,257 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 56 selfloop transitions, 6 changer transitions 0/88 dead transitions. [2024-10-24 12:13:46,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 88 transitions, 539 flow [2024-10-24 12:13:46,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:13:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:13:46,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2024-10-24 12:13:46,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.715 [2024-10-24 12:13:46,259 INFO L175 Difference]: Start difference. First operand has 75 places, 54 transitions, 273 flow. Second operand 4 states and 143 transitions. [2024-10-24 12:13:46,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 88 transitions, 539 flow [2024-10-24 12:13:46,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 88 transitions, 495 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-10-24 12:13:46,440 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 283 flow [2024-10-24 12:13:46,440 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=283, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-10-24 12:13:46,441 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2024-10-24 12:13:46,441 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 283 flow [2024-10-24 12:13:46,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2024-10-24 12:13:46,441 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:13:46,441 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:13:46,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 12:13:46,442 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:13:46,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:13:46,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1874931962, now seen corresponding path program 1 times [2024-10-24 12:13:46,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:13:46,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726311021] [2024-10-24 12:13:46,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:13:46,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:13:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:13:46,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:13:46,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:13:46,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726311021] [2024-10-24 12:13:46,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726311021] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:13:46,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:13:46,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:13:46,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387001814] [2024-10-24 12:13:46,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:13:46,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:13:46,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:13:46,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:13:46,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:13:46,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-10-24 12:13:46,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 283 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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) [2024-10-24 12:13:46,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:13:46,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-10-24 12:13:46,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:13:49,107 INFO L124 PetriNetUnfolderBase]: 14263/21641 cut-off events. [2024-10-24 12:13:49,108 INFO L125 PetriNetUnfolderBase]: For 25932/30097 co-relation queries the response was YES. [2024-10-24 12:13:49,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63213 conditions, 21641 events. 14263/21641 cut-off events. For 25932/30097 co-relation queries the response was YES. Maximal size of possible extension queue 1231. Compared 159344 event pairs, 1777 based on Foata normal form. 1057/21634 useless extension candidates. Maximal degree in co-relation 63192. Up to 8749 conditions per place. [2024-10-24 12:13:49,299 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 73 selfloop transitions, 10 changer transitions 0/109 dead transitions. [2024-10-24 12:13:49,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 109 transitions, 668 flow [2024-10-24 12:13:49,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:13:49,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:13:49,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-10-24 12:13:49,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.732 [2024-10-24 12:13:49,301 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 283 flow. Second operand 5 states and 183 transitions. [2024-10-24 12:13:49,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 109 transitions, 668 flow [2024-10-24 12:13:49,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 109 transitions, 665 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 12:13:49,317 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 348 flow [2024-10-24 12:13:49,317 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=348, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2024-10-24 12:13:49,317 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2024-10-24 12:13:49,318 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 348 flow [2024-10-24 12:13:49,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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) [2024-10-24 12:13:49,318 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:13:49,318 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:13:49,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 12:13:49,319 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:13:49,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:13:49,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1367954872, now seen corresponding path program 1 times [2024-10-24 12:13:49,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:13:49,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106438711] [2024-10-24 12:13:49,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:13:49,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:13:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:13:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:13:49,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:13:49,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106438711] [2024-10-24 12:13:49,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106438711] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:13:49,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:13:49,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:13:49,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926114287] [2024-10-24 12:13:49,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:13:49,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:13:49,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:13:49,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:13:49,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:13:49,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-10-24 12:13:49,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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) [2024-10-24 12:13:49,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:13:49,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-10-24 12:13:49,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:13:51,853 INFO L124 PetriNetUnfolderBase]: 11723/17805 cut-off events. [2024-10-24 12:13:51,853 INFO L125 PetriNetUnfolderBase]: For 36273/41744 co-relation queries the response was YES. [2024-10-24 12:13:51,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59369 conditions, 17805 events. 11723/17805 cut-off events. For 36273/41744 co-relation queries the response was YES. Maximal size of possible extension queue 1047. Compared 127300 event pairs, 1215 based on Foata normal form. 934/17813 useless extension candidates. Maximal degree in co-relation 59345. Up to 6243 conditions per place. [2024-10-24 12:13:51,959 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 86 selfloop transitions, 14 changer transitions 0/126 dead transitions. [2024-10-24 12:13:51,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 126 transitions, 833 flow [2024-10-24 12:13:51,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:13:51,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:13:51,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 221 transitions. [2024-10-24 12:13:51,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7366666666666667 [2024-10-24 12:13:51,961 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 348 flow. Second operand 6 states and 221 transitions. [2024-10-24 12:13:51,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 126 transitions, 833 flow [2024-10-24 12:13:51,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 126 transitions, 817 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-24 12:13:51,977 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 418 flow [2024-10-24 12:13:51,977 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=418, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2024-10-24 12:13:51,977 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 18 predicate places. [2024-10-24 12:13:51,978 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 418 flow [2024-10-24 12:13:51,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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) [2024-10-24 12:13:51,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:13:51,978 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:13:51,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 12:13:51,978 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:13:51,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:13:51,979 INFO L85 PathProgramCache]: Analyzing trace with hash 3549584, now seen corresponding path program 1 times [2024-10-24 12:13:51,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:13:51,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051147198] [2024-10-24 12:13:51,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:13:51,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:13:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:13:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:13:52,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:13:52,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051147198] [2024-10-24 12:13:52,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051147198] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:13:52,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:13:52,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:13:52,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196770218] [2024-10-24 12:13:52,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:13:52,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:13:52,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:13:52,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:13:52,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:13:52,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-10-24 12:13:52,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 418 flow. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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) [2024-10-24 12:13:52,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:13:52,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-10-24 12:13:52,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:13:53,619 INFO L124 PetriNetUnfolderBase]: 10029/17901 cut-off events. [2024-10-24 12:13:53,619 INFO L125 PetriNetUnfolderBase]: For 32603/36853 co-relation queries the response was YES. [2024-10-24 12:13:53,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55293 conditions, 17901 events. 10029/17901 cut-off events. For 32603/36853 co-relation queries the response was YES. Maximal size of possible extension queue 1083. Compared 157332 event pairs, 4001 based on Foata normal form. 516/16444 useless extension candidates. Maximal degree in co-relation 55267. Up to 7252 conditions per place. [2024-10-24 12:13:53,783 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 59 selfloop transitions, 3 changer transitions 14/117 dead transitions. [2024-10-24 12:13:53,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 117 transitions, 772 flow [2024-10-24 12:13:53,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:13:53,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:13:53,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 202 transitions. [2024-10-24 12:13:53,785 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2024-10-24 12:13:53,785 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 418 flow. Second operand 6 states and 202 transitions. [2024-10-24 12:13:53,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 117 transitions, 772 flow [2024-10-24 12:13:53,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 117 transitions, 741 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-10-24 12:13:53,948 INFO L231 Difference]: Finished difference. Result has 82 places, 70 transitions, 414 flow [2024-10-24 12:13:53,948 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=414, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2024-10-24 12:13:53,948 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2024-10-24 12:13:53,949 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 414 flow [2024-10-24 12:13:53,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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) [2024-10-24 12:13:53,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:13:53,949 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:13:53,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 12:13:53,949 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:13:53,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:13:53,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1807444054, now seen corresponding path program 2 times [2024-10-24 12:13:53,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:13:53,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699962810] [2024-10-24 12:13:53,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:13:53,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:13:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:13:54,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:13:54,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:13:54,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699962810] [2024-10-24 12:13:54,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699962810] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:13:54,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:13:54,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:13:54,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245574438] [2024-10-24 12:13:54,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:13:54,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:13:54,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:13:54,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:13:54,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:13:54,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-10-24 12:13:54,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 414 flow. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-10-24 12:13:54,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:13:54,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-10-24 12:13:54,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:13:56,503 INFO L124 PetriNetUnfolderBase]: 14286/25249 cut-off events. [2024-10-24 12:13:56,504 INFO L125 PetriNetUnfolderBase]: For 41261/46113 co-relation queries the response was YES. [2024-10-24 12:13:56,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76754 conditions, 25249 events. 14286/25249 cut-off events. For 41261/46113 co-relation queries the response was YES. Maximal size of possible extension queue 1650. Compared 234331 event pairs, 6277 based on Foata normal form. 637/23014 useless extension candidates. Maximal degree in co-relation 76725. Up to 10417 conditions per place. [2024-10-24 12:13:56,791 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 48 selfloop transitions, 6 changer transitions 16/107 dead transitions. [2024-10-24 12:13:56,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 107 transitions, 708 flow [2024-10-24 12:13:56,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:13:56,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:13:56,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-10-24 12:13:56,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.676 [2024-10-24 12:13:56,793 INFO L175 Difference]: Start difference. First operand has 82 places, 70 transitions, 414 flow. Second operand 5 states and 169 transitions. [2024-10-24 12:13:56,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 107 transitions, 708 flow [2024-10-24 12:13:57,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 107 transitions, 697 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-10-24 12:13:57,110 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 438 flow [2024-10-24 12:13:57,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=438, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2024-10-24 12:13:57,111 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 26 predicate places. [2024-10-24 12:13:57,111 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 438 flow [2024-10-24 12:13:57,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-10-24 12:13:57,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:13:57,112 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:13:57,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 12:13:57,112 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:13:57,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:13:57,113 INFO L85 PathProgramCache]: Analyzing trace with hash -516380878, now seen corresponding path program 3 times [2024-10-24 12:13:57,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:13:57,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045734309] [2024-10-24 12:13:57,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:13:57,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:13:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:13:57,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:13:57,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:13:57,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045734309] [2024-10-24 12:13:57,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045734309] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:13:57,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:13:57,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:13:57,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258347626] [2024-10-24 12:13:57,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:13:57,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:13:57,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:13:57,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:13:57,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:13:57,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-10-24 12:13:57,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 438 flow. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 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) [2024-10-24 12:13:57,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:13:57,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-10-24 12:13:57,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:14:01,298 INFO L124 PetriNetUnfolderBase]: 22290/33622 cut-off events. [2024-10-24 12:14:01,298 INFO L125 PetriNetUnfolderBase]: For 72005/80482 co-relation queries the response was YES. [2024-10-24 12:14:01,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113111 conditions, 33622 events. 22290/33622 cut-off events. For 72005/80482 co-relation queries the response was YES. Maximal size of possible extension queue 2293. Compared 265681 event pairs, 1972 based on Foata normal form. 1308/33530 useless extension candidates. Maximal degree in co-relation 113081. Up to 12491 conditions per place. [2024-10-24 12:14:01,599 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 58 selfloop transitions, 18 changer transitions 22/123 dead transitions. [2024-10-24 12:14:01,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 123 transitions, 840 flow [2024-10-24 12:14:01,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:14:01,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 12:14:01,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2024-10-24 12:14:01,600 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6885714285714286 [2024-10-24 12:14:01,600 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 438 flow. Second operand 7 states and 241 transitions. [2024-10-24 12:14:01,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 123 transitions, 840 flow [2024-10-24 12:14:02,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 123 transitions, 810 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-10-24 12:14:02,500 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 461 flow [2024-10-24 12:14:02,500 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=461, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2024-10-24 12:14:02,501 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 27 predicate places. [2024-10-24 12:14:02,504 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 461 flow [2024-10-24 12:14:02,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 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) [2024-10-24 12:14:02,507 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:14:02,507 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:14:02,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 12:14:02,507 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:14:02,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:14:02,507 INFO L85 PathProgramCache]: Analyzing trace with hash 372091935, now seen corresponding path program 1 times [2024-10-24 12:14:02,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:14:02,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185536069] [2024-10-24 12:14:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:14:02,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:14:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:14:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:14:03,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:14:03,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185536069] [2024-10-24 12:14:03,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185536069] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:14:03,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:14:03,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:14:03,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465222100] [2024-10-24 12:14:03,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:14:03,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:14:03,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:14:03,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:14:03,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:14:03,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 50 [2024-10-24 12:14:03,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 461 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2024-10-24 12:14:03,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:14:03,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 50 [2024-10-24 12:14:03,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:14:06,824 INFO L124 PetriNetUnfolderBase]: 19211/33818 cut-off events. [2024-10-24 12:14:06,824 INFO L125 PetriNetUnfolderBase]: For 80808/86958 co-relation queries the response was YES. [2024-10-24 12:14:06,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109499 conditions, 33818 events. 19211/33818 cut-off events. For 80808/86958 co-relation queries the response was YES. Maximal size of possible extension queue 2498. Compared 328929 event pairs, 2700 based on Foata normal form. 388/30690 useless extension candidates. Maximal degree in co-relation 109470. Up to 11400 conditions per place. [2024-10-24 12:14:07,028 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 49 selfloop transitions, 13 changer transitions 38/130 dead transitions. [2024-10-24 12:14:07,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 130 transitions, 965 flow [2024-10-24 12:14:07,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:14:07,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 12:14:07,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 210 transitions. [2024-10-24 12:14:07,032 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-24 12:14:07,032 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 461 flow. Second operand 7 states and 210 transitions. [2024-10-24 12:14:07,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 130 transitions, 965 flow [2024-10-24 12:14:08,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 130 transitions, 842 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-10-24 12:14:08,493 INFO L231 Difference]: Finished difference. Result has 89 places, 69 transitions, 424 flow [2024-10-24 12:14:08,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=89, PETRI_TRANSITIONS=69} [2024-10-24 12:14:08,495 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 31 predicate places. [2024-10-24 12:14:08,496 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 69 transitions, 424 flow [2024-10-24 12:14:08,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2024-10-24 12:14:08,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:14:08,497 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:14:08,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 12:14:08,498 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-24 12:14:08,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:14:08,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1272646159, now seen corresponding path program 2 times [2024-10-24 12:14:08,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:14:08,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731308332] [2024-10-24 12:14:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:14:08,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:14:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:14:10,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:14:10,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:14:10,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731308332] [2024-10-24 12:14:10,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731308332] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:14:10,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:14:10,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 12:14:10,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454348128] [2024-10-24 12:14:10,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:14:10,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 12:14:10,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:14:10,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 12:14:10,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:14:10,078 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 50 [2024-10-24 12:14:10,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 69 transitions, 424 flow. Second operand has 9 states, 9 states have (on average 26.0) internal successors, (234), 9 states have internal predecessors, (234), 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) [2024-10-24 12:14:10,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:14:10,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 50 [2024-10-24 12:14:10,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand