./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:27:15,438 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:27:15,527 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:27:15,533 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:27:15,535 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:27:15,565 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:27:15,566 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:27:15,566 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:27:15,567 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:27:15,568 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:27:15,568 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:27:15,570 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:27:15,571 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:27:15,571 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:27:15,571 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:27:15,574 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:27:15,574 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:27:15,574 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:27:15,574 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:27:15,575 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:27:15,575 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:27:15,576 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:27:15,576 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:27:15,576 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:27:15,576 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:27:15,580 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:27:15,580 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:27:15,580 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:27:15,581 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:27:15,581 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:27:15,581 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:27:15,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:27:15,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:27:15,582 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:27:15,582 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:27:15,582 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:27:15,582 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:27:15,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:27:15,583 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:27:15,583 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:27:15,583 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:27:15,584 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:27:15,584 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d [2024-10-11 14:27:15,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:27:15,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:27:15,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:27:15,879 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:27:15,879 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:27:15,880 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2024-10-11 14:27:17,358 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:27:17,548 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:27:17,548 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2024-10-11 14:27:17,561 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f2ab949f5/196b93a6115e4a6ab6840af60a727ac7/FLAGa5a814c68 [2024-10-11 14:27:17,936 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f2ab949f5/196b93a6115e4a6ab6840af60a727ac7 [2024-10-11 14:27:17,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:27:17,940 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:27:17,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:27:17,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:27:17,946 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:27:17,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:17" (1/1) ... [2024-10-11 14:27:17,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@124facd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:17, skipping insertion in model container [2024-10-11 14:27:17,948 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:17" (1/1) ... [2024-10-11 14:27:17,975 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:27:18,250 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/weaver/chl-name-comparator-subst.wvr.c[4875,4888] [2024-10-11 14:27:18,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:27:18,294 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:27:18,331 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/weaver/chl-name-comparator-subst.wvr.c[4875,4888] [2024-10-11 14:27:18,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:27:18,358 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:27:18,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:18 WrapperNode [2024-10-11 14:27:18,359 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:27:18,361 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:27:18,362 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:27:18,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:27:18,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:18" (1/1) ... [2024-10-11 14:27:18,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:18" (1/1) ... [2024-10-11 14:27:18,413 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 304 [2024-10-11 14:27:18,417 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:27:18,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:27:18,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:27:18,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:27:18,431 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:18" (1/1) ... [2024-10-11 14:27:18,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:18" (1/1) ... [2024-10-11 14:27:18,435 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:18" (1/1) ... [2024-10-11 14:27:18,451 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-11 14:27:18,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:18" (1/1) ... [2024-10-11 14:27:18,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:18" (1/1) ... [2024-10-11 14:27:18,461 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:18" (1/1) ... [2024-10-11 14:27:18,467 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:18" (1/1) ... [2024-10-11 14:27:18,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:18" (1/1) ... [2024-10-11 14:27:18,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:18" (1/1) ... [2024-10-11 14:27:18,478 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:27:18,479 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:27:18,479 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:27:18,479 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:27:18,483 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:18" (1/1) ... [2024-10-11 14:27:18,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:27:18,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:27:18,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:27:18,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:27:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:27:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:27:18,587 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:27:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:27:18,587 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:27:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 14:27:18,587 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 14:27:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:27:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:27:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 14:27:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 14:27:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 14:27:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:27:18,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:27:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 14:27:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 14:27:18,592 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:27:18,733 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:27:18,736 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:27:19,254 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:27:19,254 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:27:19,718 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:27:19,719 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 14:27:19,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:19 BoogieIcfgContainer [2024-10-11 14:27:19,720 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:27:19,722 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:27:19,723 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:27:19,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:27:19,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:17" (1/3) ... [2024-10-11 14:27:19,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cb915f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:19, skipping insertion in model container [2024-10-11 14:27:19,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:18" (2/3) ... [2024-10-11 14:27:19,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cb915f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:19, skipping insertion in model container [2024-10-11 14:27:19,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:19" (3/3) ... [2024-10-11 14:27:19,730 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2024-10-11 14:27:19,748 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:27:19,749 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:27:19,749 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:27:19,812 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 14:27:19,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 36 transitions, 93 flow [2024-10-11 14:27:19,886 INFO L124 PetriNetUnfolderBase]: 7/33 cut-off events. [2024-10-11 14:27:19,887 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:27:19,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 33 events. 7/33 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-10-11 14:27:19,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 36 transitions, 93 flow [2024-10-11 14:27:19,895 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 32 transitions, 82 flow [2024-10-11 14:27:19,944 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:27:19,954 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;@1de9f78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:27:19,955 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 14:27:19,973 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:27:19,974 INFO L124 PetriNetUnfolderBase]: 7/31 cut-off events. [2024-10-11 14:27:19,974 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:27:19,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:19,975 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] [2024-10-11 14:27:19,975 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:19,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:19,983 INFO L85 PathProgramCache]: Analyzing trace with hash -447705035, now seen corresponding path program 1 times [2024-10-11 14:27:19,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:19,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591835607] [2024-10-11 14:27:19,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:19,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:20,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:27:20,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:20,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591835607] [2024-10-11 14:27:20,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591835607] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:20,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:20,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:27:20,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264617581] [2024-10-11 14:27:20,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:20,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 14:27:20,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:20,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 14:27:20,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 14:27:20,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:27:20,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 82 flow. Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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) [2024-10-11 14:27:20,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:20,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:27:20,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:20,648 INFO L124 PetriNetUnfolderBase]: 792/1137 cut-off events. [2024-10-11 14:27:20,649 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2024-10-11 14:27:20,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2371 conditions, 1137 events. 792/1137 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3706 event pairs, 608 based on Foata normal form. 0/953 useless extension candidates. Maximal degree in co-relation 2150. Up to 1137 conditions per place. [2024-10-11 14:27:20,663 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 28 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2024-10-11 14:27:20,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 29 transitions, 132 flow [2024-10-11 14:27:20,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 14:27:20,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 14:27:20,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 39 transitions. [2024-10-11 14:27:20,675 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-11 14:27:20,677 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 82 flow. Second operand 2 states and 39 transitions. [2024-10-11 14:27:20,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 29 transitions, 132 flow [2024-10-11 14:27:20,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 14:27:20,683 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 64 flow [2024-10-11 14:27:20,685 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=64, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2024-10-11 14:27:20,691 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -5 predicate places. [2024-10-11 14:27:20,692 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 64 flow [2024-10-11 14:27:20,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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) [2024-10-11 14:27:20,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:20,693 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] [2024-10-11 14:27:20,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:27:20,693 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:20,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:20,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1234612696, now seen corresponding path program 1 times [2024-10-11 14:27:20,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:20,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979261862] [2024-10-11 14:27:20,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:20,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:27:20,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:20,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979261862] [2024-10-11 14:27:20,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979261862] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:20,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:20,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:27:20,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605712539] [2024-10-11 14:27:20,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:20,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:27:20,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:20,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:27:20,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:27:20,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:27:20,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-10-11 14:27:20,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:20,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:27:20,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:21,157 INFO L124 PetriNetUnfolderBase]: 792/1138 cut-off events. [2024-10-11 14:27:21,158 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-11 14:27:21,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2309 conditions, 1138 events. 792/1138 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3700 event pairs, 608 based on Foata normal form. 0/954 useless extension candidates. Maximal degree in co-relation 2306. Up to 1137 conditions per place. [2024-10-11 14:27:21,165 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 27 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2024-10-11 14:27:21,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 124 flow [2024-10-11 14:27:21,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:27:21,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:27:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-10-11 14:27:21,167 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-10-11 14:27:21,167 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 64 flow. Second operand 3 states and 42 transitions. [2024-10-11 14:27:21,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 124 flow [2024-10-11 14:27:21,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:27:21,171 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 76 flow [2024-10-11 14:27:21,171 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2024-10-11 14:27:21,172 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2024-10-11 14:27:21,172 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 76 flow [2024-10-11 14:27:21,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-10-11 14:27:21,172 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:21,173 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] [2024-10-11 14:27:21,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:27:21,173 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:21,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:21,175 INFO L85 PathProgramCache]: Analyzing trace with hash 321585607, now seen corresponding path program 1 times [2024-10-11 14:27:21,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:21,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155651701] [2024-10-11 14:27:21,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:21,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:21,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:27:21,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:21,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155651701] [2024-10-11 14:27:21,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155651701] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:27:21,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021006180] [2024-10-11 14:27:21,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:21,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:27:21,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:27:21,354 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:27:21,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:27:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:21,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 14:27:21,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:27:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:27:21,567 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:27:21,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:27:21,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021006180] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:27:21,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:27:21,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-11 14:27:21,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70229786] [2024-10-11 14:27:21,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:27:21,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:27:21,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:21,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:27:21,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:27:21,592 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:27:21,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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) [2024-10-11 14:27:21,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:21,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:27:21,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:21,801 INFO L124 PetriNetUnfolderBase]: 792/1140 cut-off events. [2024-10-11 14:27:21,802 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-11 14:27:21,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2322 conditions, 1140 events. 792/1140 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3700 event pairs, 608 based on Foata normal form. 0/956 useless extension candidates. Maximal degree in co-relation 2317. Up to 1137 conditions per place. [2024-10-11 14:27:21,809 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 27 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-10-11 14:27:21,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 32 transitions, 146 flow [2024-10-11 14:27:21,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:27:21,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:27:21,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 53 transitions. [2024-10-11 14:27:21,811 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29444444444444445 [2024-10-11 14:27:21,811 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 76 flow. Second operand 5 states and 53 transitions. [2024-10-11 14:27:21,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 32 transitions, 146 flow [2024-10-11 14:27:21,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 142 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 14:27:21,813 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 98 flow [2024-10-11 14:27:21,813 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=98, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-10-11 14:27:21,814 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-10-11 14:27:21,814 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 98 flow [2024-10-11 14:27:21,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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) [2024-10-11 14:27:21,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:21,815 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-10-11 14:27:21,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 14:27:22,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:27:22,017 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:22,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:22,017 INFO L85 PathProgramCache]: Analyzing trace with hash 836812775, now seen corresponding path program 2 times [2024-10-11 14:27:22,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:22,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250953974] [2024-10-11 14:27:22,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:22,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:22,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:27:22,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:22,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250953974] [2024-10-11 14:27:22,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250953974] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:22,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:22,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:27:22,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480399575] [2024-10-11 14:27:22,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:22,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:27:22,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:22,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:27:22,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-11 14:27:22,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:27:22,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 98 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2024-10-11 14:27:22,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:22,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:27:22,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:23,900 INFO L124 PetriNetUnfolderBase]: 2140/3125 cut-off events. [2024-10-11 14:27:23,900 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-10-11 14:27:23,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6341 conditions, 3125 events. 2140/3125 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14134 event pairs, 608 based on Foata normal form. 1/2589 useless extension candidates. Maximal degree in co-relation 6334. Up to 1188 conditions per place. [2024-10-11 14:27:23,916 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 96 selfloop transitions, 13 changer transitions 2/112 dead transitions. [2024-10-11 14:27:23,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 112 transitions, 499 flow [2024-10-11 14:27:23,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:27:23,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:27:23,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-10-11 14:27:23,920 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5436507936507936 [2024-10-11 14:27:23,921 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 98 flow. Second operand 7 states and 137 transitions. [2024-10-11 14:27:23,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 112 transitions, 499 flow [2024-10-11 14:27:23,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 112 transitions, 489 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-11 14:27:23,925 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 183 flow [2024-10-11 14:27:23,925 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=183, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-10-11 14:27:23,926 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2024-10-11 14:27:23,926 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 183 flow [2024-10-11 14:27:23,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2024-10-11 14:27:23,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:23,927 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-10-11 14:27:23,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:27:23,927 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:23,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:23,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2145649563, now seen corresponding path program 3 times [2024-10-11 14:27:23,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:23,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606335320] [2024-10-11 14:27:23,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:23,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:24,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:27:24,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:24,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606335320] [2024-10-11 14:27:24,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606335320] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:24,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:24,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:27:24,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673891376] [2024-10-11 14:27:24,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:24,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:27:24,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:24,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:27:24,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:27:24,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:27:24,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-11 14:27:24,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:24,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:27:24,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:25,665 INFO L124 PetriNetUnfolderBase]: 4722/6948 cut-off events. [2024-10-11 14:27:25,666 INFO L125 PetriNetUnfolderBase]: For 3031/3031 co-relation queries the response was YES. [2024-10-11 14:27:25,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17616 conditions, 6948 events. 4722/6948 cut-off events. For 3031/3031 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 36106 event pairs, 1348 based on Foata normal form. 4/6952 useless extension candidates. Maximal degree in co-relation 17603. Up to 2519 conditions per place. [2024-10-11 14:27:25,707 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 87 selfloop transitions, 20 changer transitions 15/123 dead transitions. [2024-10-11 14:27:25,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 123 transitions, 705 flow [2024-10-11 14:27:25,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:27:25,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:27:25,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-10-11 14:27:25,712 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5324074074074074 [2024-10-11 14:27:25,712 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 183 flow. Second operand 6 states and 115 transitions. [2024-10-11 14:27:25,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 123 transitions, 705 flow [2024-10-11 14:27:25,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 123 transitions, 705 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:27:25,748 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 319 flow [2024-10-11 14:27:25,748 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2024-10-11 14:27:25,750 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2024-10-11 14:27:25,753 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 319 flow [2024-10-11 14:27:25,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-11 14:27:25,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:25,754 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-10-11 14:27:25,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:27:25,754 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:25,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:25,755 INFO L85 PathProgramCache]: Analyzing trace with hash 194676001, now seen corresponding path program 4 times [2024-10-11 14:27:25,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:25,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665684249] [2024-10-11 14:27:25,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:25,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:26,238 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:27:26,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:26,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665684249] [2024-10-11 14:27:26,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665684249] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:26,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:26,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:27:26,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829958075] [2024-10-11 14:27:26,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:26,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:27:26,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:26,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:27:26,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:27:26,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:27:26,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 319 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-11 14:27:26,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:26,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:27:26,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:27,816 INFO L124 PetriNetUnfolderBase]: 7067/10338 cut-off events. [2024-10-11 14:27:27,816 INFO L125 PetriNetUnfolderBase]: For 12024/12024 co-relation queries the response was YES. [2024-10-11 14:27:27,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30605 conditions, 10338 events. 7067/10338 cut-off events. For 12024/12024 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 56002 event pairs, 2936 based on Foata normal form. 4/10342 useless extension candidates. Maximal degree in co-relation 30587. Up to 4784 conditions per place. [2024-10-11 14:27:27,891 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 109 selfloop transitions, 16 changer transitions 14/140 dead transitions. [2024-10-11 14:27:27,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 140 transitions, 1010 flow [2024-10-11 14:27:27,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:27:27,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:27:27,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-10-11 14:27:27,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-10-11 14:27:27,892 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 319 flow. Second operand 6 states and 105 transitions. [2024-10-11 14:27:27,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 140 transitions, 1010 flow [2024-10-11 14:27:27,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 140 transitions, 1006 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-11 14:27:27,916 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 455 flow [2024-10-11 14:27:27,916 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=455, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-10-11 14:27:27,917 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2024-10-11 14:27:27,917 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 455 flow [2024-10-11 14:27:27,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-11 14:27:27,917 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:27,918 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-10-11 14:27:27,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:27:27,918 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:27,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:27,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1109558291, now seen corresponding path program 5 times [2024-10-11 14:27:27,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:27,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304341936] [2024-10-11 14:27:27,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:27,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:28,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:27:28,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:28,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304341936] [2024-10-11 14:27:28,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304341936] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:28,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:28,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:27:28,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841974677] [2024-10-11 14:27:28,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:28,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:27:28,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:28,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:27:28,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 14:27:28,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:27:28,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 455 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2024-10-11 14:27:28,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:28,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:27:28,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:30,319 INFO L124 PetriNetUnfolderBase]: 7070/10381 cut-off events. [2024-10-11 14:27:30,319 INFO L125 PetriNetUnfolderBase]: For 22879/22879 co-relation queries the response was YES. [2024-10-11 14:27:30,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34161 conditions, 10381 events. 7070/10381 cut-off events. For 22879/22879 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 57919 event pairs, 2439 based on Foata normal form. 1/10382 useless extension candidates. Maximal degree in co-relation 34139. Up to 4721 conditions per place. [2024-10-11 14:27:30,406 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 119 selfloop transitions, 28 changer transitions 3/151 dead transitions. [2024-10-11 14:27:30,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 151 transitions, 1233 flow [2024-10-11 14:27:30,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:27:30,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:27:30,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-10-11 14:27:30,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-10-11 14:27:30,409 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 455 flow. Second operand 7 states and 130 transitions. [2024-10-11 14:27:30,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 151 transitions, 1233 flow [2024-10-11 14:27:30,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 151 transitions, 1204 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-11 14:27:30,567 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 629 flow [2024-10-11 14:27:30,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=629, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2024-10-11 14:27:30,569 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2024-10-11 14:27:30,570 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 629 flow [2024-10-11 14:27:30,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2024-10-11 14:27:30,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:30,570 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-10-11 14:27:30,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 14:27:30,571 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:30,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:30,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1522170939, now seen corresponding path program 6 times [2024-10-11 14:27:30,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:30,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766653947] [2024-10-11 14:27:30,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:30,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:31,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:27:31,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:31,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766653947] [2024-10-11 14:27:31,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766653947] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:31,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:31,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:27:31,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854175366] [2024-10-11 14:27:31,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:31,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:27:31,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:31,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:27:31,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 14:27:31,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:27:31,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 629 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2024-10-11 14:27:31,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:31,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:27:31,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:32,711 INFO L124 PetriNetUnfolderBase]: 7356/10870 cut-off events. [2024-10-11 14:27:32,711 INFO L125 PetriNetUnfolderBase]: For 33856/33856 co-relation queries the response was YES. [2024-10-11 14:27:32,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38914 conditions, 10870 events. 7356/10870 cut-off events. For 33856/33856 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 62302 event pairs, 2682 based on Foata normal form. 1/10871 useless extension candidates. Maximal degree in co-relation 38888. Up to 4351 conditions per place. [2024-10-11 14:27:32,793 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 135 selfloop transitions, 25 changer transitions 3/164 dead transitions. [2024-10-11 14:27:32,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 164 transitions, 1551 flow [2024-10-11 14:27:32,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:27:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:27:32,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-10-11 14:27:32,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.503968253968254 [2024-10-11 14:27:32,795 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 629 flow. Second operand 7 states and 127 transitions. [2024-10-11 14:27:32,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 164 transitions, 1551 flow [2024-10-11 14:27:32,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 164 transitions, 1502 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-10-11 14:27:32,869 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 859 flow [2024-10-11 14:27:32,869 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=859, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2024-10-11 14:27:32,870 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 47 predicate places. [2024-10-11 14:27:32,870 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 859 flow [2024-10-11 14:27:32,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2024-10-11 14:27:32,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:32,871 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-10-11 14:27:32,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 14:27:32,871 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:32,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:32,872 INFO L85 PathProgramCache]: Analyzing trace with hash 283442431, now seen corresponding path program 7 times [2024-10-11 14:27:32,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:32,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269461941] [2024-10-11 14:27:32,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:32,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:27:33,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:33,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269461941] [2024-10-11 14:27:33,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269461941] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:33,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:33,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:27:33,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61764277] [2024-10-11 14:27:33,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:33,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:27:33,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:33,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:27:33,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:27:33,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:27:33,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 859 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-11 14:27:33,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:33,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:27:33,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:34,841 INFO L124 PetriNetUnfolderBase]: 7366/10930 cut-off events. [2024-10-11 14:27:34,841 INFO L125 PetriNetUnfolderBase]: For 48559/48559 co-relation queries the response was YES. [2024-10-11 14:27:34,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42295 conditions, 10930 events. 7366/10930 cut-off events. For 48559/48559 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 61496 event pairs, 2808 based on Foata normal form. 5/10935 useless extension candidates. Maximal degree in co-relation 42264. Up to 4877 conditions per place. [2024-10-11 14:27:34,922 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 112 selfloop transitions, 40 changer transitions 15/168 dead transitions. [2024-10-11 14:27:34,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 168 transitions, 1752 flow [2024-10-11 14:27:34,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:27:34,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:27:34,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-10-11 14:27:34,924 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-10-11 14:27:34,924 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 859 flow. Second operand 6 states and 110 transitions. [2024-10-11 14:27:34,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 168 transitions, 1752 flow [2024-10-11 14:27:35,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 168 transitions, 1709 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-10-11 14:27:35,050 INFO L231 Difference]: Finished difference. Result has 90 places, 98 transitions, 1140 flow [2024-10-11 14:27:35,053 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1140, PETRI_PLACES=90, PETRI_TRANSITIONS=98} [2024-10-11 14:27:35,054 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 55 predicate places. [2024-10-11 14:27:35,054 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 98 transitions, 1140 flow [2024-10-11 14:27:35,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-11 14:27:35,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:35,054 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-10-11 14:27:35,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 14:27:35,054 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:35,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:35,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1919790835, now seen corresponding path program 8 times [2024-10-11 14:27:35,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:35,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69250221] [2024-10-11 14:27:35,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:35,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:35,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:27:35,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:35,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69250221] [2024-10-11 14:27:35,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69250221] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:35,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:35,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:27:35,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580644909] [2024-10-11 14:27:35,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:35,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:27:35,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:35,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:27:35,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 14:27:35,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:27:35,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 98 transitions, 1140 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2024-10-11 14:27:35,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:35,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:27:35,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:37,220 INFO L124 PetriNetUnfolderBase]: 7312/10824 cut-off events. [2024-10-11 14:27:37,220 INFO L125 PetriNetUnfolderBase]: For 61063/61063 co-relation queries the response was YES. [2024-10-11 14:27:37,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44155 conditions, 10824 events. 7312/10824 cut-off events. For 61063/61063 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 62220 event pairs, 2628 based on Foata normal form. 1/10825 useless extension candidates. Maximal degree in co-relation 44120. Up to 4339 conditions per place. [2024-10-11 14:27:37,292 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 164 selfloop transitions, 25 changer transitions 3/193 dead transitions. [2024-10-11 14:27:37,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 193 transitions, 2356 flow [2024-10-11 14:27:37,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:27:37,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:27:37,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-10-11 14:27:37,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-10-11 14:27:37,294 INFO L175 Difference]: Start difference. First operand has 90 places, 98 transitions, 1140 flow. Second operand 7 states and 128 transitions. [2024-10-11 14:27:37,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 193 transitions, 2356 flow [2024-10-11 14:27:37,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 193 transitions, 2202 flow, removed 58 selfloop flow, removed 2 redundant places. [2024-10-11 14:27:37,481 INFO L231 Difference]: Finished difference. Result has 97 places, 110 transitions, 1383 flow [2024-10-11 14:27:37,482 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1383, PETRI_PLACES=97, PETRI_TRANSITIONS=110} [2024-10-11 14:27:37,484 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 62 predicate places. [2024-10-11 14:27:37,484 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 110 transitions, 1383 flow [2024-10-11 14:27:37,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2024-10-11 14:27:37,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:37,485 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-10-11 14:27:37,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 14:27:37,485 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:37,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:37,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1212925769, now seen corresponding path program 9 times [2024-10-11 14:27:37,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:37,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097038556] [2024-10-11 14:27:37,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:37,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:37,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:27:37,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:37,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097038556] [2024-10-11 14:27:37,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097038556] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:37,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:37,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:27:37,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712593758] [2024-10-11 14:27:37,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:37,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:27:37,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:37,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:27:37,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:27:37,899 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:27:37,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 110 transitions, 1383 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-11 14:27:37,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:37,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:27:37,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:39,096 INFO L124 PetriNetUnfolderBase]: 7312/10816 cut-off events. [2024-10-11 14:27:39,096 INFO L125 PetriNetUnfolderBase]: For 64645/64645 co-relation queries the response was YES. [2024-10-11 14:27:39,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44348 conditions, 10816 events. 7312/10816 cut-off events. For 64645/64645 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 61168 event pairs, 2763 based on Foata normal form. 4/10820 useless extension candidates. Maximal degree in co-relation 44310. Up to 4684 conditions per place. [2024-10-11 14:27:39,166 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 104 selfloop transitions, 60 changer transitions 16/181 dead transitions. [2024-10-11 14:27:39,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 181 transitions, 2245 flow [2024-10-11 14:27:39,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:27:39,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:27:39,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-10-11 14:27:39,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2024-10-11 14:27:39,168 INFO L175 Difference]: Start difference. First operand has 97 places, 110 transitions, 1383 flow. Second operand 6 states and 109 transitions. [2024-10-11 14:27:39,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 181 transitions, 2245 flow [2024-10-11 14:27:39,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 181 transitions, 2188 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-10-11 14:27:39,321 INFO L231 Difference]: Finished difference. Result has 104 places, 117 transitions, 1691 flow [2024-10-11 14:27:39,321 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1691, PETRI_PLACES=104, PETRI_TRANSITIONS=117} [2024-10-11 14:27:39,322 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 69 predicate places. [2024-10-11 14:27:39,322 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 117 transitions, 1691 flow [2024-10-11 14:27:39,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-11 14:27:39,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:39,322 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-10-11 14:27:39,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 14:27:39,323 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:39,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:39,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1207144633, now seen corresponding path program 10 times [2024-10-11 14:27:39,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:39,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771110115] [2024-10-11 14:27:39,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:39,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:39,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:27:39,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:39,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771110115] [2024-10-11 14:27:39,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771110115] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:39,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:39,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:27:39,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194058440] [2024-10-11 14:27:39,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:39,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:27:39,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:39,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:27:39,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:27:39,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:27:39,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 117 transitions, 1691 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-11 14:27:39,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:39,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:27:39,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:41,121 INFO L124 PetriNetUnfolderBase]: 7255/10690 cut-off events. [2024-10-11 14:27:41,122 INFO L125 PetriNetUnfolderBase]: For 77142/77142 co-relation queries the response was YES. [2024-10-11 14:27:41,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46220 conditions, 10690 events. 7255/10690 cut-off events. For 77142/77142 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 60020 event pairs, 2551 based on Foata normal form. 7/10697 useless extension candidates. Maximal degree in co-relation 46178. Up to 4630 conditions per place. [2024-10-11 14:27:41,200 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 102 selfloop transitions, 66 changer transitions 18/187 dead transitions. [2024-10-11 14:27:41,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 187 transitions, 2522 flow [2024-10-11 14:27:41,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:27:41,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:27:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-10-11 14:27:41,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-10-11 14:27:41,203 INFO L175 Difference]: Start difference. First operand has 104 places, 117 transitions, 1691 flow. Second operand 6 states and 110 transitions. [2024-10-11 14:27:41,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 187 transitions, 2522 flow [2024-10-11 14:27:41,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 187 transitions, 2447 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-10-11 14:27:41,398 INFO L231 Difference]: Finished difference. Result has 109 places, 123 transitions, 1883 flow [2024-10-11 14:27:41,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1883, PETRI_PLACES=109, PETRI_TRANSITIONS=123} [2024-10-11 14:27:41,399 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 74 predicate places. [2024-10-11 14:27:41,399 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 123 transitions, 1883 flow [2024-10-11 14:27:41,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-11 14:27:41,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:41,399 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-10-11 14:27:41,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 14:27:41,400 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:41,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:41,400 INFO L85 PathProgramCache]: Analyzing trace with hash 976585551, now seen corresponding path program 11 times [2024-10-11 14:27:41,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:41,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692452110] [2024-10-11 14:27:41,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:41,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:41,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:27:41,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:41,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692452110] [2024-10-11 14:27:41,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692452110] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:41,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:41,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:27:41,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472159797] [2024-10-11 14:27:41,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:41,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:27:41,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:41,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:27:41,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:27:41,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:27:41,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 123 transitions, 1883 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-11 14:27:41,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:41,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:27:41,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:43,589 INFO L124 PetriNetUnfolderBase]: 7208/10578 cut-off events. [2024-10-11 14:27:43,590 INFO L125 PetriNetUnfolderBase]: For 84426/84426 co-relation queries the response was YES. [2024-10-11 14:27:43,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46588 conditions, 10578 events. 7208/10578 cut-off events. For 84426/84426 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 58160 event pairs, 2720 based on Foata normal form. 5/10583 useless extension candidates. Maximal degree in co-relation 46544. Up to 4877 conditions per place. [2024-10-11 14:27:43,681 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 125 selfloop transitions, 57 changer transitions 18/201 dead transitions. [2024-10-11 14:27:43,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 201 transitions, 2909 flow [2024-10-11 14:27:43,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:27:43,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:27:43,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-10-11 14:27:43,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 14:27:43,683 INFO L175 Difference]: Start difference. First operand has 109 places, 123 transitions, 1883 flow. Second operand 6 states and 108 transitions. [2024-10-11 14:27:43,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 201 transitions, 2909 flow [2024-10-11 14:27:43,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 201 transitions, 2764 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-10-11 14:27:43,947 INFO L231 Difference]: Finished difference. Result has 113 places, 131 transitions, 2074 flow [2024-10-11 14:27:43,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2074, PETRI_PLACES=113, PETRI_TRANSITIONS=131} [2024-10-11 14:27:43,948 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 78 predicate places. [2024-10-11 14:27:43,948 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 131 transitions, 2074 flow [2024-10-11 14:27:43,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-10-11 14:27:43,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:43,948 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 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] [2024-10-11 14:27:43,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 14:27:43,949 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:43,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:43,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1580537744, now seen corresponding path program 1 times [2024-10-11 14:27:43,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:43,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923236057] [2024-10-11 14:27:43,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:43,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:27:44,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:44,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923236057] [2024-10-11 14:27:44,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923236057] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:44,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:44,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:27:44,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688391055] [2024-10-11 14:27:44,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:44,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:27:44,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:44,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:27:44,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 14:27:44,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:27:44,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 131 transitions, 2074 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2024-10-11 14:27:44,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:44,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:27:44,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:45,898 INFO L124 PetriNetUnfolderBase]: 8091/11821 cut-off events. [2024-10-11 14:27:45,898 INFO L125 PetriNetUnfolderBase]: For 85322/85322 co-relation queries the response was YES. [2024-10-11 14:27:45,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50060 conditions, 11821 events. 8091/11821 cut-off events. For 85322/85322 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 66745 event pairs, 1725 based on Foata normal form. 13/11834 useless extension candidates. Maximal degree in co-relation 50014. Up to 6536 conditions per place. [2024-10-11 14:27:45,967 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 155 selfloop transitions, 57 changer transitions 1/214 dead transitions. [2024-10-11 14:27:45,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 214 transitions, 2976 flow [2024-10-11 14:27:45,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:27:45,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:27:45,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-10-11 14:27:45,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5317460317460317 [2024-10-11 14:27:45,969 INFO L175 Difference]: Start difference. First operand has 113 places, 131 transitions, 2074 flow. Second operand 7 states and 134 transitions. [2024-10-11 14:27:45,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 214 transitions, 2976 flow [2024-10-11 14:27:46,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 214 transitions, 2827 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-10-11 14:27:46,149 INFO L231 Difference]: Finished difference. Result has 118 places, 136 transitions, 2194 flow [2024-10-11 14:27:46,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1957, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2194, PETRI_PLACES=118, PETRI_TRANSITIONS=136} [2024-10-11 14:27:46,150 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 83 predicate places. [2024-10-11 14:27:46,150 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 136 transitions, 2194 flow [2024-10-11 14:27:46,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2024-10-11 14:27:46,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:46,150 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 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] [2024-10-11 14:27:46,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 14:27:46,151 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:46,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:46,151 INFO L85 PathProgramCache]: Analyzing trace with hash 15090204, now seen corresponding path program 1 times [2024-10-11 14:27:46,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:46,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528120178] [2024-10-11 14:27:46,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:46,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:27:46,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:46,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528120178] [2024-10-11 14:27:46,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528120178] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:46,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:46,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 14:27:46,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768833335] [2024-10-11 14:27:46,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:46,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:27:46,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:46,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:27:46,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:27:46,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:27:46,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 136 transitions, 2194 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-10-11 14:27:46,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:46,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:27:46,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:48,449 INFO L124 PetriNetUnfolderBase]: 11771/17161 cut-off events. [2024-10-11 14:27:48,450 INFO L125 PetriNetUnfolderBase]: For 129148/129148 co-relation queries the response was YES. [2024-10-11 14:27:48,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71849 conditions, 17161 events. 11771/17161 cut-off events. For 129148/129148 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 102728 event pairs, 3177 based on Foata normal form. 8/17169 useless extension candidates. Maximal degree in co-relation 71801. Up to 5932 conditions per place. [2024-10-11 14:27:48,866 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 227 selfloop transitions, 53 changer transitions 1/282 dead transitions. [2024-10-11 14:27:48,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 282 transitions, 4317 flow [2024-10-11 14:27:48,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:27:48,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:27:48,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-10-11 14:27:48,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-10-11 14:27:48,868 INFO L175 Difference]: Start difference. First operand has 118 places, 136 transitions, 2194 flow. Second operand 7 states and 142 transitions. [2024-10-11 14:27:48,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 282 transitions, 4317 flow [2024-10-11 14:27:49,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 282 transitions, 4187 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-10-11 14:27:49,265 INFO L231 Difference]: Finished difference. Result has 127 places, 162 transitions, 2705 flow [2024-10-11 14:27:49,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2113, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2705, PETRI_PLACES=127, PETRI_TRANSITIONS=162} [2024-10-11 14:27:49,266 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 92 predicate places. [2024-10-11 14:27:49,266 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 162 transitions, 2705 flow [2024-10-11 14:27:49,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-10-11 14:27:49,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:49,266 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 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] [2024-10-11 14:27:49,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 14:27:49,267 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:49,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:49,267 INFO L85 PathProgramCache]: Analyzing trace with hash 613927612, now seen corresponding path program 2 times [2024-10-11 14:27:49,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:49,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643726472] [2024-10-11 14:27:49,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:49,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:27:49,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:49,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643726472] [2024-10-11 14:27:49,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643726472] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:49,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:49,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:27:49,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878165898] [2024-10-11 14:27:49,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:49,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:27:49,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:49,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:27:49,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-11 14:27:49,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:27:49,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 162 transitions, 2705 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2024-10-11 14:27:49,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:49,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:27:49,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:51,877 INFO L124 PetriNetUnfolderBase]: 13860/20258 cut-off events. [2024-10-11 14:27:51,877 INFO L125 PetriNetUnfolderBase]: For 155163/155163 co-relation queries the response was YES. [2024-10-11 14:27:52,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86920 conditions, 20258 events. 13860/20258 cut-off events. For 155163/155163 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 124829 event pairs, 4155 based on Foata normal form. 13/20271 useless extension candidates. Maximal degree in co-relation 86867. Up to 8023 conditions per place. [2024-10-11 14:27:52,116 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 217 selfloop transitions, 59 changer transitions 1/278 dead transitions. [2024-10-11 14:27:52,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 278 transitions, 4242 flow [2024-10-11 14:27:52,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:27:52,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:27:52,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-10-11 14:27:52,117 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5793650793650794 [2024-10-11 14:27:52,117 INFO L175 Difference]: Start difference. First operand has 127 places, 162 transitions, 2705 flow. Second operand 7 states and 146 transitions. [2024-10-11 14:27:52,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 278 transitions, 4242 flow [2024-10-11 14:27:52,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 278 transitions, 4188 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-10-11 14:27:52,648 INFO L231 Difference]: Finished difference. Result has 135 places, 168 transitions, 2914 flow [2024-10-11 14:27:52,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2658, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2914, PETRI_PLACES=135, PETRI_TRANSITIONS=168} [2024-10-11 14:27:52,649 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 100 predicate places. [2024-10-11 14:27:52,649 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 168 transitions, 2914 flow [2024-10-11 14:27:52,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2024-10-11 14:27:52,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:52,650 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 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] [2024-10-11 14:27:52,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 14:27:52,650 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:52,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:52,651 INFO L85 PathProgramCache]: Analyzing trace with hash -586131088, now seen corresponding path program 2 times [2024-10-11 14:27:52,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:52,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519484579] [2024-10-11 14:27:52,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:52,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:52,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:27:52,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:52,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519484579] [2024-10-11 14:27:52,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519484579] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:52,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:52,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 14:27:52,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824701543] [2024-10-11 14:27:52,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:52,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:27:52,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:52,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:27:52,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:27:52,945 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:27:52,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 168 transitions, 2914 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-10-11 14:27:52,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:52,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:27:52,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:27:55,761 INFO L124 PetriNetUnfolderBase]: 15896/23214 cut-off events. [2024-10-11 14:27:55,762 INFO L125 PetriNetUnfolderBase]: For 191170/191170 co-relation queries the response was YES. [2024-10-11 14:27:55,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99618 conditions, 23214 events. 15896/23214 cut-off events. For 191170/191170 co-relation queries the response was YES. Maximal size of possible extension queue 952. Compared 143626 event pairs, 3235 based on Foata normal form. 12/23226 useless extension candidates. Maximal degree in co-relation 99562. Up to 9838 conditions per place. [2024-10-11 14:27:56,026 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 238 selfloop transitions, 54 changer transitions 1/294 dead transitions. [2024-10-11 14:27:56,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 294 transitions, 4692 flow [2024-10-11 14:27:56,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:27:56,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:27:56,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-10-11 14:27:56,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-10-11 14:27:56,027 INFO L175 Difference]: Start difference. First operand has 135 places, 168 transitions, 2914 flow. Second operand 7 states and 136 transitions. [2024-10-11 14:27:56,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 294 transitions, 4692 flow [2024-10-11 14:27:56,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 294 transitions, 4537 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-10-11 14:27:56,820 INFO L231 Difference]: Finished difference. Result has 143 places, 182 transitions, 3251 flow [2024-10-11 14:27:56,820 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2823, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3251, PETRI_PLACES=143, PETRI_TRANSITIONS=182} [2024-10-11 14:27:56,821 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 108 predicate places. [2024-10-11 14:27:56,821 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 182 transitions, 3251 flow [2024-10-11 14:27:56,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-10-11 14:27:56,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:27:56,822 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 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] [2024-10-11 14:27:56,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 14:27:56,822 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:27:56,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:27:56,822 INFO L85 PathProgramCache]: Analyzing trace with hash 391438696, now seen corresponding path program 3 times [2024-10-11 14:27:56,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:27:56,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145218062] [2024-10-11 14:27:56,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:27:56,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:27:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:27:57,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:27:57,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:27:57,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145218062] [2024-10-11 14:27:57,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145218062] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:27:57,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:27:57,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 14:27:57,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101535807] [2024-10-11 14:27:57,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:27:57,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:27:57,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:27:57,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:27:57,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:27:57,382 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:27:57,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 182 transitions, 3251 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-10-11 14:27:57,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:27:57,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:27:57,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:01,265 INFO L124 PetriNetUnfolderBase]: 16328/23852 cut-off events. [2024-10-11 14:28:01,265 INFO L125 PetriNetUnfolderBase]: For 214889/214889 co-relation queries the response was YES. [2024-10-11 14:28:01,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103312 conditions, 23852 events. 16328/23852 cut-off events. For 214889/214889 co-relation queries the response was YES. Maximal size of possible extension queue 1009. Compared 149783 event pairs, 4855 based on Foata normal form. 8/23860 useless extension candidates. Maximal degree in co-relation 103252. Up to 9555 conditions per place. [2024-10-11 14:28:01,467 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 213 selfloop transitions, 78 changer transitions 1/293 dead transitions. [2024-10-11 14:28:01,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 293 transitions, 4823 flow [2024-10-11 14:28:01,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:28:01,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:28:01,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-10-11 14:28:01,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-10-11 14:28:01,469 INFO L175 Difference]: Start difference. First operand has 143 places, 182 transitions, 3251 flow. Second operand 7 states and 147 transitions. [2024-10-11 14:28:01,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 293 transitions, 4823 flow [2024-10-11 14:28:02,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 293 transitions, 4722 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-11 14:28:02,201 INFO L231 Difference]: Finished difference. Result has 150 places, 189 transitions, 3519 flow [2024-10-11 14:28:02,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3178, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3519, PETRI_PLACES=150, PETRI_TRANSITIONS=189} [2024-10-11 14:28:02,201 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 115 predicate places. [2024-10-11 14:28:02,202 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 189 transitions, 3519 flow [2024-10-11 14:28:02,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-10-11 14:28:02,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:02,202 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 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] [2024-10-11 14:28:02,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 14:28:02,202 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:02,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:02,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1494868392, now seen corresponding path program 3 times [2024-10-11 14:28:02,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:02,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759700418] [2024-10-11 14:28:02,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:02,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:28:02,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:02,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759700418] [2024-10-11 14:28:02,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759700418] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:02,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:02,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 14:28:02,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231022730] [2024-10-11 14:28:02,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:02,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:28:02,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:02,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:28:02,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:28:02,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:28:02,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 189 transitions, 3519 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-10-11 14:28:02,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:02,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:28:02,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:07,081 INFO L124 PetriNetUnfolderBase]: 19220/28076 cut-off events. [2024-10-11 14:28:07,082 INFO L125 PetriNetUnfolderBase]: For 270229/270229 co-relation queries the response was YES. [2024-10-11 14:28:07,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123321 conditions, 28076 events. 19220/28076 cut-off events. For 270229/270229 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 177742 event pairs, 2855 based on Foata normal form. 12/28088 useless extension candidates. Maximal degree in co-relation 123258. Up to 13311 conditions per place. [2024-10-11 14:28:07,439 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 295 selfloop transitions, 64 changer transitions 1/361 dead transitions. [2024-10-11 14:28:07,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 361 transitions, 6586 flow [2024-10-11 14:28:07,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:28:07,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:28:07,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-10-11 14:28:07,441 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-10-11 14:28:07,441 INFO L175 Difference]: Start difference. First operand has 150 places, 189 transitions, 3519 flow. Second operand 7 states and 135 transitions. [2024-10-11 14:28:07,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 361 transitions, 6586 flow [2024-10-11 14:28:08,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 361 transitions, 6368 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-10-11 14:28:08,569 INFO L231 Difference]: Finished difference. Result has 158 places, 228 transitions, 4393 flow [2024-10-11 14:28:08,569 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3380, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4393, PETRI_PLACES=158, PETRI_TRANSITIONS=228} [2024-10-11 14:28:08,570 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 123 predicate places. [2024-10-11 14:28:08,570 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 228 transitions, 4393 flow [2024-10-11 14:28:08,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-10-11 14:28:08,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:08,570 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 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] [2024-10-11 14:28:08,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 14:28:08,571 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:08,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:08,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1075770402, now seen corresponding path program 4 times [2024-10-11 14:28:08,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:08,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756025106] [2024-10-11 14:28:08,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:08,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:28:09,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:09,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756025106] [2024-10-11 14:28:09,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756025106] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:09,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:09,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 14:28:09,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044576347] [2024-10-11 14:28:09,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:09,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:28:09,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:09,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:28:09,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:28:09,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:28:09,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 228 transitions, 4393 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-10-11 14:28:09,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:09,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:28:09,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:13,772 INFO L124 PetriNetUnfolderBase]: 19199/28039 cut-off events. [2024-10-11 14:28:13,772 INFO L125 PetriNetUnfolderBase]: For 287582/287582 co-relation queries the response was YES. [2024-10-11 14:28:13,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126408 conditions, 28039 events. 19199/28039 cut-off events. For 287582/287582 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 178602 event pairs, 5771 based on Foata normal form. 13/28052 useless extension candidates. Maximal degree in co-relation 126340. Up to 11087 conditions per place. [2024-10-11 14:28:14,034 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 218 selfloop transitions, 109 changer transitions 1/329 dead transitions. [2024-10-11 14:28:14,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 329 transitions, 5850 flow [2024-10-11 14:28:14,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:28:14,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:28:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-10-11 14:28:14,035 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-10-11 14:28:14,036 INFO L175 Difference]: Start difference. First operand has 158 places, 228 transitions, 4393 flow. Second operand 7 states and 147 transitions. [2024-10-11 14:28:14,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 329 transitions, 5850 flow [2024-10-11 14:28:15,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 329 transitions, 5814 flow, removed 18 selfloop flow, removed 0 redundant places. [2024-10-11 14:28:15,220 INFO L231 Difference]: Finished difference. Result has 166 places, 230 transitions, 4632 flow [2024-10-11 14:28:15,220 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4363, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4632, PETRI_PLACES=166, PETRI_TRANSITIONS=230} [2024-10-11 14:28:15,221 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 131 predicate places. [2024-10-11 14:28:15,221 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 230 transitions, 4632 flow [2024-10-11 14:28:15,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-10-11 14:28:15,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:15,221 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 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] [2024-10-11 14:28:15,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-11 14:28:15,221 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:15,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:15,222 INFO L85 PathProgramCache]: Analyzing trace with hash 850115986, now seen corresponding path program 4 times [2024-10-11 14:28:15,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:15,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903819789] [2024-10-11 14:28:15,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:15,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:28:15,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:15,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903819789] [2024-10-11 14:28:15,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903819789] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:15,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:15,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 14:28:15,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578882612] [2024-10-11 14:28:15,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:15,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:28:15,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:15,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:28:15,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:28:15,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:28:15,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 230 transitions, 4632 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-10-11 14:28:15,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:15,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:28:15,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:20,742 INFO L124 PetriNetUnfolderBase]: 19795/28951 cut-off events. [2024-10-11 14:28:20,742 INFO L125 PetriNetUnfolderBase]: For 322074/322074 co-relation queries the response was YES. [2024-10-11 14:28:20,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133011 conditions, 28951 events. 19795/28951 cut-off events. For 322074/322074 co-relation queries the response was YES. Maximal size of possible extension queue 1197. Compared 185748 event pairs, 6981 based on Foata normal form. 12/28963 useless extension candidates. Maximal degree in co-relation 132940. Up to 16448 conditions per place. [2024-10-11 14:28:20,990 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 215 selfloop transitions, 119 changer transitions 1/336 dead transitions. [2024-10-11 14:28:20,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 336 transitions, 6294 flow [2024-10-11 14:28:20,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:28:20,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:28:20,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-10-11 14:28:20,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-10-11 14:28:20,992 INFO L175 Difference]: Start difference. First operand has 166 places, 230 transitions, 4632 flow. Second operand 7 states and 142 transitions. [2024-10-11 14:28:20,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 336 transitions, 6294 flow [2024-10-11 14:28:22,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 336 transitions, 6069 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-11 14:28:22,113 INFO L231 Difference]: Finished difference. Result has 172 places, 245 transitions, 5106 flow [2024-10-11 14:28:22,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4421, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5106, PETRI_PLACES=172, PETRI_TRANSITIONS=245} [2024-10-11 14:28:22,113 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 137 predicate places. [2024-10-11 14:28:22,113 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 245 transitions, 5106 flow [2024-10-11 14:28:22,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-10-11 14:28:22,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:22,114 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 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] [2024-10-11 14:28:22,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 14:28:22,114 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:28:22,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:22,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1333852562, now seen corresponding path program 5 times [2024-10-11 14:28:22,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:22,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929170977] [2024-10-11 14:28:22,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:22,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:22,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 14:28:22,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:22,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929170977] [2024-10-11 14:28:22,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929170977] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:22,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:22,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:28:22,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031882595] [2024-10-11 14:28:22,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:22,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:28:22,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:22,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:28:22,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-11 14:28:22,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-10-11 14:28:22,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 245 transitions, 5106 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2024-10-11 14:28:22,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:22,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-10-11 14:28:22,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand