./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d96f41c83679efe744540e7fde7918287d6cc79be28bb1ad9b63bf8e0d07ce19 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:31:29,723 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:31:29,818 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-13 23:31:29,828 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:31:29,828 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:31:29,867 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:31:29,868 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:31:29,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:31:29,870 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:31:29,870 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:31:29,871 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:31:29,871 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:31:29,871 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:31:29,871 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:31:29,871 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:31:29,871 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:31:29,871 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:31:29,872 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:31:29,872 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:31:29,872 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:31:29,872 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:31:29,872 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:31:29,872 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:31:29,873 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:31:29,873 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:31:29,873 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:31:29,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:31:29,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:31:29,873 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:31:29,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:31:29,873 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:31:29,873 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:31:29,873 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:31:29,873 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:31:29,873 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:31:29,874 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:31:29,875 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:31:29,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:31:29,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:31:29,875 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:31:29,875 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:31:29,875 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:31:29,875 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:31:29,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:31:29,876 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:31:29,876 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:31:29,876 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:31:29,876 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E 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 -> Taipan 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 -> d96f41c83679efe744540e7fde7918287d6cc79be28bb1ad9b63bf8e0d07ce19 [2024-11-13 23:31:30,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:31:30,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:31:30,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:31:30,190 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:31:30,190 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:31:30,191 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c Unable to find full path for "g++" [2024-11-13 23:31:32,030 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:31:32,456 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:31:32,457 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2024-11-13 23:31:32,477 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/data/3b85abe06/e269fd80a56746f8b256378022da7fbb/FLAG382f52e1e [2024-11-13 23:31:32,492 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/data/3b85abe06/e269fd80a56746f8b256378022da7fbb [2024-11-13 23:31:32,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:31:32,498 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:31:32,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:31:32,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:31:32,506 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:31:32,507 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:31:32" (1/1) ... [2024-11-13 23:31:32,508 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58026b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:31:32, skipping insertion in model container [2024-11-13 23:31:32,509 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:31:32" (1/1) ... [2024-11-13 23:31:32,584 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:31:33,091 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c[34453,34466] [2024-11-13 23:31:33,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:31:33,345 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:31:33,355 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [48] [2024-11-13 23:31:33,357 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1596] [2024-11-13 23:31:33,358 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1605] [2024-11-13 23:31:33,358 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2267] [2024-11-13 23:31:33,358 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [2281] [2024-11-13 23:31:33,358 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2462] [2024-11-13 23:31:33,359 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2581] [2024-11-13 23:31:33,359 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2673] [2024-11-13 23:31:33,360 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3026] [2024-11-13 23:31:33,360 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3392] [2024-11-13 23:31:33,426 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c[34453,34466] [2024-11-13 23:31:33,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:31:33,510 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:31:33,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:31:33 WrapperNode [2024-11-13 23:31:33,513 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:31:33,515 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:31:33,515 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:31:33,515 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:31:33,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:31:33" (1/1) ... [2024-11-13 23:31:33,559 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:31:33" (1/1) ... [2024-11-13 23:31:33,645 INFO L138 Inliner]: procedures = 94, calls = 340, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1117 [2024-11-13 23:31:33,645 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:31:33,646 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:31:33,646 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:31:33,646 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:31:33,657 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:31:33" (1/1) ... [2024-11-13 23:31:33,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:31:33" (1/1) ... [2024-11-13 23:31:33,663 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:31:33" (1/1) ... [2024-11-13 23:31:33,663 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:31:33" (1/1) ... [2024-11-13 23:31:33,680 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:31:33" (1/1) ... [2024-11-13 23:31:33,696 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:31:33" (1/1) ... [2024-11-13 23:31:33,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:31:33" (1/1) ... [2024-11-13 23:31:33,715 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:31:33" (1/1) ... [2024-11-13 23:31:33,725 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:31:33,726 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:31:33,726 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:31:33,726 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:31:33,729 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:31:33" (1/1) ... [2024-11-13 23:31:33,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:31:33,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:31:33,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:31:33,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:31:33,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:31:33,840 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-13 23:31:33,841 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-13 23:31:33,841 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-13 23:31:33,841 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-13 23:31:33,841 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-11-13 23:31:33,841 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-11-13 23:31:33,841 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-13 23:31:33,841 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-13 23:31:33,841 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-13 23:31:33,842 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-13 23:31:33,842 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-13 23:31:33,842 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-13 23:31:33,842 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-13 23:31:33,843 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-13 23:31:33,843 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-13 23:31:33,843 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-13 23:31:33,843 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-13 23:31:33,843 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-13 23:31:33,844 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-13 23:31:33,844 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-13 23:31:33,844 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-13 23:31:33,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-13 23:31:33,846 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-13 23:31:33,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-13 23:31:33,846 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-13 23:31:33,846 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-13 23:31:33,847 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-13 23:31:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-13 23:31:33,847 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-13 23:31:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-13 23:31:33,847 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-13 23:31:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-13 23:31:33,847 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-13 23:31:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-13 23:31:33,847 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-13 23:31:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-13 23:31:33,847 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-13 23:31:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-13 23:31:33,847 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-13 23:31:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-13 23:31:33,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 23:31:33,847 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-13 23:31:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-13 23:31:33,847 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-13 23:31:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-13 23:31:33,848 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-13 23:31:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-13 23:31:33,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:31:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:31:33,848 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-13 23:31:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-13 23:31:34,031 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:31:34,035 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:31:35,719 INFO L? ?]: Removed 449 outVars from TransFormulas that were not future-live. [2024-11-13 23:31:35,719 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:31:36,863 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:31:36,867 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 23:31:36,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:31:36 BoogieIcfgContainer [2024-11-13 23:31:36,867 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:31:36,870 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:31:36,870 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:31:36,876 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:31:36,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:31:32" (1/3) ... [2024-11-13 23:31:36,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256dd2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:31:36, skipping insertion in model container [2024-11-13 23:31:36,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:31:33" (2/3) ... [2024-11-13 23:31:36,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256dd2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:31:36, skipping insertion in model container [2024-11-13 23:31:36,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:31:36" (3/3) ... [2024-11-13 23:31:36,879 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product19.cil.c [2024-11-13 23:31:36,897 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:31:36,900 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec2_product19.cil.c that has 25 procedures, 374 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 23:31:36,986 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:31:37,001 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=FINITE_AUTOMATA, 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;@484523a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:31:37,003 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 23:31:37,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 374 states, 252 states have (on average 1.5952380952380953) internal successors, (402), 273 states have internal predecessors, (402), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-13 23:31:37,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 23:31:37,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:31:37,035 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:31:37,035 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:31:37,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:31:37,042 INFO L85 PathProgramCache]: Analyzing trace with hash 286612078, now seen corresponding path program 1 times [2024-11-13 23:31:37,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:31:37,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035061661] [2024-11-13 23:31:37,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:37,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:31:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:37,748 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 23:31:37,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:31:37,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035061661] [2024-11-13 23:31:37,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035061661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:31:37,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:31:37,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:31:37,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208057864] [2024-11-13 23:31:37,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:31:37,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 23:31:37,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:31:37,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 23:31:37,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 23:31:37,793 INFO L87 Difference]: Start difference. First operand has 374 states, 252 states have (on average 1.5952380952380953) internal successors, (402), 273 states have internal predecessors, (402), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-13 23:31:37,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:31:37,988 INFO L93 Difference]: Finished difference Result 392 states and 621 transitions. [2024-11-13 23:31:37,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 23:31:37,995 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 77 [2024-11-13 23:31:37,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:31:38,015 INFO L225 Difference]: With dead ends: 392 [2024-11-13 23:31:38,015 INFO L226 Difference]: Without dead ends: 370 [2024-11-13 23:31:38,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 23:31:38,025 INFO L432 NwaCegarLoop]: 551 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:31:38,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 551 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:31:38,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-13 23:31:38,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2024-11-13 23:31:38,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 250 states have (on average 1.584) internal successors, (396), 269 states have internal predecessors, (396), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-13 23:31:38,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 583 transitions. [2024-11-13 23:31:38,127 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 583 transitions. Word has length 77 [2024-11-13 23:31:38,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:31:38,128 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 583 transitions. [2024-11-13 23:31:38,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-13 23:31:38,129 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 583 transitions. [2024-11-13 23:31:38,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 23:31:38,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:31:38,141 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:31:38,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 23:31:38,141 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:31:38,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:31:38,142 INFO L85 PathProgramCache]: Analyzing trace with hash -599828812, now seen corresponding path program 1 times [2024-11-13 23:31:38,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:31:38,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108671107] [2024-11-13 23:31:38,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:38,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:31:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:38,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 23:31:38,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:31:38,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108671107] [2024-11-13 23:31:38,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108671107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:31:38,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:31:38,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 23:31:38,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146743740] [2024-11-13 23:31:38,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:31:38,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 23:31:38,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:31:38,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 23:31:38,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:31:38,933 INFO L87 Difference]: Start difference. First operand 370 states and 583 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-13 23:31:42,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:31:42,029 INFO L93 Difference]: Finished difference Result 1141 states and 1828 transitions. [2024-11-13 23:31:42,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 23:31:42,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 78 [2024-11-13 23:31:42,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:31:42,044 INFO L225 Difference]: With dead ends: 1141 [2024-11-13 23:31:42,044 INFO L226 Difference]: Without dead ends: 787 [2024-11-13 23:31:42,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-13 23:31:42,053 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 1146 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 2180 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 2604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 2180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-13 23:31:42,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 1603 Invalid, 2604 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [424 Valid, 2180 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-13 23:31:42,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2024-11-13 23:31:42,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 738. [2024-11-13 23:31:42,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 507 states have (on average 1.5956607495069033) internal successors, (809), 540 states have internal predecessors, (809), 186 states have call successors, (186), 44 states have call predecessors, (186), 44 states have return successors, (187), 178 states have call predecessors, (187), 181 states have call successors, (187) [2024-11-13 23:31:42,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1182 transitions. [2024-11-13 23:31:42,178 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1182 transitions. Word has length 78 [2024-11-13 23:31:42,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:31:42,178 INFO L471 AbstractCegarLoop]: Abstraction has 738 states and 1182 transitions. [2024-11-13 23:31:42,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-13 23:31:42,179 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1182 transitions. [2024-11-13 23:31:42,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-13 23:31:42,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:31:42,183 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:31:42,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 23:31:42,183 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:31:42,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:31:42,184 INFO L85 PathProgramCache]: Analyzing trace with hash 703815659, now seen corresponding path program 1 times [2024-11-13 23:31:42,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:31:42,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956676818] [2024-11-13 23:31:42,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:42,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:31:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:42,618 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 23:31:42,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:31:42,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956676818] [2024-11-13 23:31:42,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956676818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:31:42,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:31:42,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 23:31:42,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968284192] [2024-11-13 23:31:42,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:31:42,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 23:31:42,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:31:42,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 23:31:42,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:31:42,620 INFO L87 Difference]: Start difference. First operand 738 states and 1182 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-13 23:31:43,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:31:43,393 INFO L93 Difference]: Finished difference Result 809 states and 1294 transitions. [2024-11-13 23:31:43,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:31:43,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 82 [2024-11-13 23:31:43,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:31:43,402 INFO L225 Difference]: With dead ends: 809 [2024-11-13 23:31:43,402 INFO L226 Difference]: Without dead ends: 794 [2024-11-13 23:31:43,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-13 23:31:43,404 INFO L432 NwaCegarLoop]: 540 mSDtfsCounter, 648 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:31:43,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 1801 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 23:31:43,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2024-11-13 23:31:43,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 742. [2024-11-13 23:31:43,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 511 states have (on average 1.5909980430528377) internal successors, (813), 544 states have internal predecessors, (813), 186 states have call successors, (186), 44 states have call predecessors, (186), 44 states have return successors, (187), 178 states have call predecessors, (187), 181 states have call successors, (187) [2024-11-13 23:31:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1186 transitions. [2024-11-13 23:31:43,470 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1186 transitions. Word has length 82 [2024-11-13 23:31:43,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:31:43,473 INFO L471 AbstractCegarLoop]: Abstraction has 742 states and 1186 transitions. [2024-11-13 23:31:43,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-13 23:31:43,474 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1186 transitions. [2024-11-13 23:31:43,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-13 23:31:43,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:31:43,482 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:31:43,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 23:31:43,482 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:31:43,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:31:43,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1046178979, now seen corresponding path program 1 times [2024-11-13 23:31:43,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:31:43,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813507608] [2024-11-13 23:31:43,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:43,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:31:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:43,742 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 23:31:43,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:31:43,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813507608] [2024-11-13 23:31:43,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813507608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:31:43,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:31:43,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 23:31:43,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749617550] [2024-11-13 23:31:43,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:31:43,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 23:31:43,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:31:43,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 23:31:43,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:31:43,744 INFO L87 Difference]: Start difference. First operand 742 states and 1186 transitions. Second operand has 5 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-13 23:31:43,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:31:43,965 INFO L93 Difference]: Finished difference Result 757 states and 1204 transitions. [2024-11-13 23:31:43,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:31:43,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) Word has length 87 [2024-11-13 23:31:43,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:31:43,974 INFO L225 Difference]: With dead ends: 757 [2024-11-13 23:31:43,974 INFO L226 Difference]: Without dead ends: 742 [2024-11-13 23:31:43,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:31:43,978 INFO L432 NwaCegarLoop]: 547 mSDtfsCounter, 0 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:31:43,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2186 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 23:31:43,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2024-11-13 23:31:44,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 742. [2024-11-13 23:31:44,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 511 states have (on average 1.5870841487279843) internal successors, (811), 544 states have internal predecessors, (811), 186 states have call successors, (186), 44 states have call predecessors, (186), 44 states have return successors, (187), 178 states have call predecessors, (187), 181 states have call successors, (187) [2024-11-13 23:31:44,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1184 transitions. [2024-11-13 23:31:44,077 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1184 transitions. Word has length 87 [2024-11-13 23:31:44,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:31:44,079 INFO L471 AbstractCegarLoop]: Abstraction has 742 states and 1184 transitions. [2024-11-13 23:31:44,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-13 23:31:44,079 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1184 transitions. [2024-11-13 23:31:44,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-13 23:31:44,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:31:44,086 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:31:44,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 23:31:44,086 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:31:44,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:31:44,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1550342312, now seen corresponding path program 1 times [2024-11-13 23:31:44,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:31:44,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59633658] [2024-11-13 23:31:44,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:44,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:31:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:44,380 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 23:31:44,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:31:44,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59633658] [2024-11-13 23:31:44,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59633658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:31:44,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:31:44,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 23:31:44,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624914095] [2024-11-13 23:31:44,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:31:44,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:31:44,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:31:44,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:31:44,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:31:44,383 INFO L87 Difference]: Start difference. First operand 742 states and 1184 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-13 23:31:46,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:31:46,250 INFO L93 Difference]: Finished difference Result 2383 states and 3869 transitions. [2024-11-13 23:31:46,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:31:46,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 94 [2024-11-13 23:31:46,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:31:46,267 INFO L225 Difference]: With dead ends: 2383 [2024-11-13 23:31:46,267 INFO L226 Difference]: Without dead ends: 1657 [2024-11-13 23:31:46,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:31:46,277 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 1156 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:31:46,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 676 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 23:31:46,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2024-11-13 23:31:46,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1491. [2024-11-13 23:31:46,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1491 states, 1049 states have (on average 1.5986653956148713) internal successors, (1677), 1112 states have internal predecessors, (1677), 357 states have call successors, (357), 79 states have call predecessors, (357), 84 states have return successors, (375), 335 states have call predecessors, (375), 352 states have call successors, (375) [2024-11-13 23:31:46,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2409 transitions. [2024-11-13 23:31:46,468 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2409 transitions. Word has length 94 [2024-11-13 23:31:46,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:31:46,469 INFO L471 AbstractCegarLoop]: Abstraction has 1491 states and 2409 transitions. [2024-11-13 23:31:46,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-13 23:31:46,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2409 transitions. [2024-11-13 23:31:46,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-13 23:31:46,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:31:46,475 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:31:46,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 23:31:46,476 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:31:46,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:31:46,477 INFO L85 PathProgramCache]: Analyzing trace with hash -816109848, now seen corresponding path program 1 times [2024-11-13 23:31:46,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:31:46,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711362358] [2024-11-13 23:31:46,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:46,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:31:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:46,772 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 23:31:46,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:31:46,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711362358] [2024-11-13 23:31:46,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711362358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:31:46,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:31:46,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 23:31:46,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594040618] [2024-11-13 23:31:46,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:31:46,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:31:46,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:31:46,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:31:46,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:31:46,775 INFO L87 Difference]: Start difference. First operand 1491 states and 2409 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-13 23:31:48,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:31:48,716 INFO L93 Difference]: Finished difference Result 4562 states and 7487 transitions. [2024-11-13 23:31:48,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:31:48,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 95 [2024-11-13 23:31:48,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:31:48,744 INFO L225 Difference]: With dead ends: 4562 [2024-11-13 23:31:48,744 INFO L226 Difference]: Without dead ends: 3090 [2024-11-13 23:31:48,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:31:48,753 INFO L432 NwaCegarLoop]: 306 mSDtfsCounter, 1146 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-13 23:31:48,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 684 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-13 23:31:48,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2024-11-13 23:31:49,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2877. [2024-11-13 23:31:49,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2047 states have (on average 1.6062530532486565) internal successors, (3288), 2177 states have internal predecessors, (3288), 662 states have call successors, (662), 149 states have call predecessors, (662), 167 states have return successors, (740), 612 states have call predecessors, (740), 657 states have call successors, (740) [2024-11-13 23:31:49,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 4690 transitions. [2024-11-13 23:31:49,043 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 4690 transitions. Word has length 95 [2024-11-13 23:31:49,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:31:49,044 INFO L471 AbstractCegarLoop]: Abstraction has 2877 states and 4690 transitions. [2024-11-13 23:31:49,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-13 23:31:49,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 4690 transitions. [2024-11-13 23:31:49,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-13 23:31:49,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:31:49,051 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:31:49,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 23:31:49,051 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:31:49,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:31:49,052 INFO L85 PathProgramCache]: Analyzing trace with hash 470263962, now seen corresponding path program 1 times [2024-11-13 23:31:49,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:31:49,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538904983] [2024-11-13 23:31:49,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:49,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:31:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:49,312 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 23:31:49,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:31:49,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538904983] [2024-11-13 23:31:49,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538904983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:31:49,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:31:49,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 23:31:49,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102288273] [2024-11-13 23:31:49,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:31:49,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:31:49,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:31:49,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:31:49,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:31:49,316 INFO L87 Difference]: Start difference. First operand 2877 states and 4690 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-13 23:31:51,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:31:51,515 INFO L93 Difference]: Finished difference Result 8762 states and 14599 transitions. [2024-11-13 23:31:51,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:31:51,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 96 [2024-11-13 23:31:51,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:31:51,566 INFO L225 Difference]: With dead ends: 8762 [2024-11-13 23:31:51,566 INFO L226 Difference]: Without dead ends: 5910 [2024-11-13 23:31:51,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:31:51,584 INFO L432 NwaCegarLoop]: 319 mSDtfsCounter, 1133 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:31:51,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 697 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 23:31:51,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5910 states. [2024-11-13 23:31:52,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5910 to 5594. [2024-11-13 23:31:52,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5594 states, 3998 states have (on average 1.6068034017008503) internal successors, (6424), 4268 states have internal predecessors, (6424), 1256 states have call successors, (1256), 289 states have call predecessors, (1256), 339 states have return successors, (1546), 1150 states have call predecessors, (1546), 1251 states have call successors, (1546) [2024-11-13 23:31:52,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5594 states to 5594 states and 9226 transitions. [2024-11-13 23:31:52,135 INFO L78 Accepts]: Start accepts. Automaton has 5594 states and 9226 transitions. Word has length 96 [2024-11-13 23:31:52,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:31:52,136 INFO L471 AbstractCegarLoop]: Abstraction has 5594 states and 9226 transitions. [2024-11-13 23:31:52,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-13 23:31:52,137 INFO L276 IsEmpty]: Start isEmpty. Operand 5594 states and 9226 transitions. [2024-11-13 23:31:52,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-13 23:31:52,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:31:52,141 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:31:52,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 23:31:52,141 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:31:52,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:31:52,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1693150314, now seen corresponding path program 1 times [2024-11-13 23:31:52,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:31:52,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759286930] [2024-11-13 23:31:52,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:52,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:31:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:52,433 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 23:31:52,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:31:52,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759286930] [2024-11-13 23:31:52,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759286930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:31:52,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:31:52,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 23:31:52,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597920154] [2024-11-13 23:31:52,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:31:52,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:31:52,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:31:52,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:31:52,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:31:52,436 INFO L87 Difference]: Start difference. First operand 5594 states and 9226 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-13 23:31:55,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:31:55,191 INFO L93 Difference]: Finished difference Result 17015 states and 29110 transitions. [2024-11-13 23:31:55,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:31:55,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 97 [2024-11-13 23:31:55,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:31:55,292 INFO L225 Difference]: With dead ends: 17015 [2024-11-13 23:31:55,292 INFO L226 Difference]: Without dead ends: 11458 [2024-11-13 23:31:55,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:31:55,326 INFO L432 NwaCegarLoop]: 332 mSDtfsCounter, 1120 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:31:55,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 707 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-13 23:31:55,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11458 states. [2024-11-13 23:31:56,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11458 to 10927. [2024-11-13 23:31:56,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10927 states, 7817 states have (on average 1.603684277855955) internal successors, (12536), 8379 states have internal predecessors, (12536), 2414 states have call successors, (2414), 569 states have call predecessors, (2414), 695 states have return successors, (3456), 2196 states have call predecessors, (3456), 2409 states have call successors, (3456) [2024-11-13 23:31:56,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10927 states to 10927 states and 18406 transitions. [2024-11-13 23:31:56,506 INFO L78 Accepts]: Start accepts. Automaton has 10927 states and 18406 transitions. Word has length 97 [2024-11-13 23:31:56,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:31:56,507 INFO L471 AbstractCegarLoop]: Abstraction has 10927 states and 18406 transitions. [2024-11-13 23:31:56,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-13 23:31:56,507 INFO L276 IsEmpty]: Start isEmpty. Operand 10927 states and 18406 transitions. [2024-11-13 23:31:56,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-13 23:31:56,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:31:56,511 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:31:56,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 23:31:56,511 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:31:56,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:31:56,512 INFO L85 PathProgramCache]: Analyzing trace with hash 947925468, now seen corresponding path program 1 times [2024-11-13 23:31:56,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:31:56,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308154473] [2024-11-13 23:31:56,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:56,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:31:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:56,781 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 23:31:56,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:31:56,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308154473] [2024-11-13 23:31:56,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308154473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:31:56,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:31:56,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 23:31:56,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116787625] [2024-11-13 23:31:56,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:31:56,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:31:56,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:31:56,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:31:56,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:31:56,784 INFO L87 Difference]: Start difference. First operand 10927 states and 18406 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-13 23:32:00,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:32:00,565 INFO L93 Difference]: Finished difference Result 33312 states and 59838 transitions. [2024-11-13 23:32:00,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:32:00,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 98 [2024-11-13 23:32:00,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:32:00,743 INFO L225 Difference]: With dead ends: 33312 [2024-11-13 23:32:00,744 INFO L226 Difference]: Without dead ends: 22436 [2024-11-13 23:32:00,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:32:00,806 INFO L432 NwaCegarLoop]: 343 mSDtfsCounter, 1112 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-13 23:32:00,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 722 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-13 23:32:00,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22436 states. [2024-11-13 23:32:02,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22436 to 21364. [2024-11-13 23:32:03,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21364 states, 15311 states have (on average 1.60244268826334) internal successors, (24535), 16435 states have internal predecessors, (24535), 4670 states have call successors, (4670), 1127 states have call predecessors, (4670), 1382 states have return successors, (8107), 4227 states have call predecessors, (8107), 4665 states have call successors, (8107) [2024-11-13 23:32:03,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21364 states to 21364 states and 37312 transitions. [2024-11-13 23:32:03,168 INFO L78 Accepts]: Start accepts. Automaton has 21364 states and 37312 transitions. Word has length 98 [2024-11-13 23:32:03,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:32:03,169 INFO L471 AbstractCegarLoop]: Abstraction has 21364 states and 37312 transitions. [2024-11-13 23:32:03,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-13 23:32:03,169 INFO L276 IsEmpty]: Start isEmpty. Operand 21364 states and 37312 transitions. [2024-11-13 23:32:03,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-13 23:32:03,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:32:03,178 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:32:03,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 23:32:03,178 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:32:03,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:32:03,183 INFO L85 PathProgramCache]: Analyzing trace with hash 2035955149, now seen corresponding path program 1 times [2024-11-13 23:32:03,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:32:03,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874971632] [2024-11-13 23:32:03,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:03,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:32:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:32:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-13 23:32:03,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:32:03,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874971632] [2024-11-13 23:32:03,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874971632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:32:03,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:32:03,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 23:32:03,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74332589] [2024-11-13 23:32:03,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:32:03,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:32:03,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:32:03,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:32:03,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:32:03,422 INFO L87 Difference]: Start difference. First operand 21364 states and 37312 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-13 23:32:05,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:32:05,652 INFO L93 Difference]: Finished difference Result 42839 states and 77400 transitions. [2024-11-13 23:32:05,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:32:05,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 146 [2024-11-13 23:32:05,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:32:05,853 INFO L225 Difference]: With dead ends: 42839 [2024-11-13 23:32:05,854 INFO L226 Difference]: Without dead ends: 21492 [2024-11-13 23:32:05,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:32:05,988 INFO L432 NwaCegarLoop]: 547 mSDtfsCounter, 0 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:32:05,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1635 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:32:06,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21492 states. [2024-11-13 23:32:07,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21492 to 21492. [2024-11-13 23:32:07,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21492 states, 15439 states have (on average 1.5974480212448994) internal successors, (24663), 16563 states have internal predecessors, (24663), 4670 states have call successors, (4670), 1127 states have call predecessors, (4670), 1382 states have return successors, (8107), 4227 states have call predecessors, (8107), 4665 states have call successors, (8107) [2024-11-13 23:32:07,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21492 states to 21492 states and 37440 transitions. [2024-11-13 23:32:07,807 INFO L78 Accepts]: Start accepts. Automaton has 21492 states and 37440 transitions. Word has length 146 [2024-11-13 23:32:07,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:32:07,807 INFO L471 AbstractCegarLoop]: Abstraction has 21492 states and 37440 transitions. [2024-11-13 23:32:07,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-13 23:32:07,808 INFO L276 IsEmpty]: Start isEmpty. Operand 21492 states and 37440 transitions. [2024-11-13 23:32:07,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-13 23:32:07,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:32:07,816 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:32:07,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 23:32:07,817 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:32:07,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:32:07,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1889768369, now seen corresponding path program 1 times [2024-11-13 23:32:07,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:32:07,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895032542] [2024-11-13 23:32:07,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:07,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:32:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:32:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-13 23:32:08,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:32:08,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895032542] [2024-11-13 23:32:08,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895032542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:32:08,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008113643] [2024-11-13 23:32:08,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:08,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:32:08,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:32:08,055 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:32:08,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 23:32:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:32:08,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 1789 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:32:08,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:32:08,650 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-13 23:32:08,650 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:32:08,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008113643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:32:08,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:32:08,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-13 23:32:08,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665475614] [2024-11-13 23:32:08,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:32:08,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:32:08,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:32:08,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:32:08,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:32:08,656 INFO L87 Difference]: Start difference. First operand 21492 states and 37440 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-13 23:32:10,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:32:10,483 INFO L93 Difference]: Finished difference Result 45847 states and 83116 transitions. [2024-11-13 23:32:10,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:32:10,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 149 [2024-11-13 23:32:10,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:32:10,685 INFO L225 Difference]: With dead ends: 45847 [2024-11-13 23:32:10,685 INFO L226 Difference]: Without dead ends: 24372 [2024-11-13 23:32:10,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:32:10,813 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 144 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:32:10,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1438 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:32:10,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24372 states. [2024-11-13 23:32:13,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24372 to 23988. [2024-11-13 23:32:13,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23988 states, 17871 states have (on average 1.641486206703598) internal successors, (29335), 18995 states have internal predecessors, (29335), 4670 states have call successors, (4670), 1191 states have call predecessors, (4670), 1446 states have return successors, (8107), 4227 states have call predecessors, (8107), 4665 states have call successors, (8107) [2024-11-13 23:32:13,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23988 states to 23988 states and 42112 transitions. [2024-11-13 23:32:13,451 INFO L78 Accepts]: Start accepts. Automaton has 23988 states and 42112 transitions. Word has length 149 [2024-11-13 23:32:13,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:32:13,452 INFO L471 AbstractCegarLoop]: Abstraction has 23988 states and 42112 transitions. [2024-11-13 23:32:13,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-13 23:32:13,453 INFO L276 IsEmpty]: Start isEmpty. Operand 23988 states and 42112 transitions. [2024-11-13 23:32:13,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-13 23:32:13,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:32:13,466 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:32:13,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 23:32:13,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 23:32:13,670 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:32:13,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:32:13,671 INFO L85 PathProgramCache]: Analyzing trace with hash 440587048, now seen corresponding path program 1 times [2024-11-13 23:32:13,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:32:13,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733543147] [2024-11-13 23:32:13,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:13,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:32:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:32:14,265 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-13 23:32:14,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:32:14,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733543147] [2024-11-13 23:32:14,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733543147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:32:14,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556086813] [2024-11-13 23:32:14,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:14,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:32:14,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:32:14,268 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:32:14,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 23:32:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:32:14,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 1794 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:32:14,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:32:14,828 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 23:32:14,832 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:32:14,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556086813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:32:14,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:32:14,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-13 23:32:14,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756614713] [2024-11-13 23:32:14,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:32:14,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:32:14,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:32:14,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:32:14,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:32:14,834 INFO L87 Difference]: Start difference. First operand 23988 states and 42112 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-13 23:32:16,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:32:16,667 INFO L93 Difference]: Finished difference Result 51031 states and 92522 transitions. [2024-11-13 23:32:16,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:32:16,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 154 [2024-11-13 23:32:16,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:32:16,882 INFO L225 Difference]: With dead ends: 51031 [2024-11-13 23:32:16,883 INFO L226 Difference]: Without dead ends: 27060 [2024-11-13 23:32:17,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:32:17,019 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 142 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:32:17,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1435 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:32:17,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27060 states. [2024-11-13 23:32:19,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27060 to 26484. [2024-11-13 23:32:19,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26484 states, 20303 states have (on average 1.6749741417524504) internal successors, (34007), 21427 states have internal predecessors, (34007), 4670 states have call successors, (4670), 1255 states have call predecessors, (4670), 1510 states have return successors, (8107), 4227 states have call predecessors, (8107), 4665 states have call successors, (8107) [2024-11-13 23:32:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26484 states to 26484 states and 46784 transitions. [2024-11-13 23:32:19,685 INFO L78 Accepts]: Start accepts. Automaton has 26484 states and 46784 transitions. Word has length 154 [2024-11-13 23:32:19,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:32:19,689 INFO L471 AbstractCegarLoop]: Abstraction has 26484 states and 46784 transitions. [2024-11-13 23:32:19,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-13 23:32:19,689 INFO L276 IsEmpty]: Start isEmpty. Operand 26484 states and 46784 transitions. [2024-11-13 23:32:19,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-13 23:32:19,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:32:19,718 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:32:19,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 23:32:19,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 23:32:19,918 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:32:19,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:32:19,919 INFO L85 PathProgramCache]: Analyzing trace with hash -897893224, now seen corresponding path program 1 times [2024-11-13 23:32:19,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:32:19,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538778039] [2024-11-13 23:32:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:19,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:32:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:32:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-13 23:32:21,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:32:21,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538778039] [2024-11-13 23:32:21,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538778039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:32:21,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878500300] [2024-11-13 23:32:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:21,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:32:21,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:32:21,749 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:32:21,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 23:32:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:32:22,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 1798 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:32:22,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:32:22,363 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 23:32:22,363 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:32:22,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878500300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:32:22,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:32:22,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18] total 20 [2024-11-13 23:32:22,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977060640] [2024-11-13 23:32:22,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:32:22,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:32:22,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:32:22,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:32:22,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-13 23:32:22,366 INFO L87 Difference]: Start difference. First operand 26484 states and 46784 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-13 23:32:24,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:32:24,598 INFO L93 Difference]: Finished difference Result 56215 states and 101928 transitions. [2024-11-13 23:32:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:32:24,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 158 [2024-11-13 23:32:24,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:32:24,914 INFO L225 Difference]: With dead ends: 56215 [2024-11-13 23:32:24,914 INFO L226 Difference]: Without dead ends: 29748 [2024-11-13 23:32:24,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-11-13 23:32:24,996 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 140 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:32:24,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1432 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:32:25,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29748 states. [2024-11-13 23:32:26,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29748 to 28980. [2024-11-13 23:32:26,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28980 states, 22735 states have (on average 1.701297558829998) internal successors, (38679), 23859 states have internal predecessors, (38679), 4670 states have call successors, (4670), 1319 states have call predecessors, (4670), 1574 states have return successors, (8107), 4227 states have call predecessors, (8107), 4665 states have call successors, (8107) [2024-11-13 23:32:26,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28980 states to 28980 states and 51456 transitions. [2024-11-13 23:32:26,478 INFO L78 Accepts]: Start accepts. Automaton has 28980 states and 51456 transitions. Word has length 158 [2024-11-13 23:32:26,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:32:26,479 INFO L471 AbstractCegarLoop]: Abstraction has 28980 states and 51456 transitions. [2024-11-13 23:32:26,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-13 23:32:26,479 INFO L276 IsEmpty]: Start isEmpty. Operand 28980 states and 51456 transitions. [2024-11-13 23:32:26,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-13 23:32:26,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:32:26,484 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:32:26,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 23:32:26,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:32:26,685 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:32:26,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:32:26,685 INFO L85 PathProgramCache]: Analyzing trace with hash -149142879, now seen corresponding path program 1 times [2024-11-13 23:32:26,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:32:26,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030222843] [2024-11-13 23:32:26,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:26,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:32:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:32:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 23:32:28,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:32:28,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030222843] [2024-11-13 23:32:28,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030222843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:32:28,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461972623] [2024-11-13 23:32:28,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:32:28,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:32:28,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:32:28,089 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:32:28,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21514921-6177-4777-9a5b-a5b6802bf4df/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 23:32:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:32:28,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 1801 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:32:28,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:32:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 23:32:28,853 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:32:28,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461972623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:32:28,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:32:28,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18] total 20 [2024-11-13 23:32:28,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262972385] [2024-11-13 23:32:28,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:32:28,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:32:28,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:32:28,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:32:28,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-13 23:32:28,855 INFO L87 Difference]: Start difference. First operand 28980 states and 51456 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25)