./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje --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 6cc96375562d846fbf28439914184b0f5b3d70ee1197dff8e1988bf2754bc90e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:09:52,758 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:09:52,846 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 06:09:52,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:09:52,856 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:09:52,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:09:52,890 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:09:52,890 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:09:52,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:09:52,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:09:52,892 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:09:52,892 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:09:52,892 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:09:52,893 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:09:52,893 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:09:52,893 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:09:52,894 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:09:52,894 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:09:52,895 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:09:52,895 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:09:52,895 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:09:52,896 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:09:52,897 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:09:52,897 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:09:52,897 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:09:52,898 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:09:52,898 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:09:52,913 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:09:52,914 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:09:52,914 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:09:52,914 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:09:52,915 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:09:52,915 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:09:52,915 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:09:52,915 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:09:52,916 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:09:52,916 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:09:52,917 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:09:52,917 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:09:52,921 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:09:52,922 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:09:52,922 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:09:52,923 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:09:52,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:09:52,923 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:09:52,923 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:09:52,924 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:09:52,924 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cc96375562d846fbf28439914184b0f5b3d70ee1197dff8e1988bf2754bc90e [2024-11-09 06:09:53,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:09:53,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:09:53,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:09:53,226 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:09:53,226 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:09:53,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/elevator_spec14_product27.cil.c Unable to find full path for "g++" [2024-11-09 06:09:55,215 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:09:55,506 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:09:55,506 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/sv-benchmarks/c/product-lines/elevator_spec14_product27.cil.c [2024-11-09 06:09:55,530 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/data/98e86d81d/0d7ca0849f6b466d80d3016f8ede8ff0/FLAG02c5922d0 [2024-11-09 06:09:55,547 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/data/98e86d81d/0d7ca0849f6b466d80d3016f8ede8ff0 [2024-11-09 06:09:55,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:09:55,551 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:09:55,552 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:09:55,553 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:09:55,560 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:09:55,561 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:09:55" (1/1) ... [2024-11-09 06:09:55,563 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e91afaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:55, skipping insertion in model container [2024-11-09 06:09:55,565 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:09:55" (1/1) ... [2024-11-09 06:09:55,642 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:09:55,856 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_c114031f-fb41-4665-899e-41bfaba98243/sv-benchmarks/c/product-lines/elevator_spec14_product27.cil.c[1546,1559] [2024-11-09 06:09:56,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:09:56,357 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:09:56,367 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-11-09 06:09:56,369 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [57] [2024-11-09 06:09:56,369 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1620] [2024-11-09 06:09:56,370 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1975] [2024-11-09 06:09:56,370 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2066] [2024-11-09 06:09:56,370 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2432] [2024-11-09 06:09:56,371 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2467] [2024-11-09 06:09:56,372 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification14_spec.i","") [2481] [2024-11-09 06:09:56,372 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2517] [2024-11-09 06:09:56,372 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2635] [2024-11-09 06:09:56,375 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_c114031f-fb41-4665-899e-41bfaba98243/sv-benchmarks/c/product-lines/elevator_spec14_product27.cil.c[1546,1559] [2024-11-09 06:09:56,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:09:56,568 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:09:56,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:56 WrapperNode [2024-11-09 06:09:56,568 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:09:56,569 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:09:56,569 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:09:56,570 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:09:56,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:56" (1/1) ... [2024-11-09 06:09:56,599 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:56" (1/1) ... [2024-11-09 06:09:56,662 INFO L138 Inliner]: procedures = 92, calls = 335, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 1093 [2024-11-09 06:09:56,666 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:09:56,671 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:09:56,671 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:09:56,671 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:09:56,685 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:56" (1/1) ... [2024-11-09 06:09:56,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:56" (1/1) ... [2024-11-09 06:09:56,692 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:56" (1/1) ... [2024-11-09 06:09:56,692 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:56" (1/1) ... [2024-11-09 06:09:56,712 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:56" (1/1) ... [2024-11-09 06:09:56,731 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:56" (1/1) ... [2024-11-09 06:09:56,737 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:56" (1/1) ... [2024-11-09 06:09:56,743 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:56" (1/1) ... [2024-11-09 06:09:56,755 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:09:56,756 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:09:56,756 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:09:56,756 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:09:56,761 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:56" (1/1) ... [2024-11-09 06:09:56,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:09:56,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:09:56,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:09:56,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:09:56,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:09:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-09 06:09:56,863 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-09 06:09:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-09 06:09:56,864 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-09 06:09:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-09 06:09:56,864 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-09 06:09:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-09 06:09:56,865 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-09 06:09:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-09 06:09:56,865 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-09 06:09:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-09 06:09:56,867 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-09 06:09:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-09 06:09:56,867 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-09 06:09:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 06:09:56,867 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 06:09:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 06:09:56,868 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 06:09:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-09 06:09:56,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-09 06:09:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-09 06:09:56,891 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-09 06:09:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-09 06:09:56,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-09 06:09:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-09 06:09:56,891 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-09 06:09:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-09 06:09:56,892 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-09 06:09:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-09 06:09:56,892 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-09 06:09:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-09 06:09:56,892 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-09 06:09:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-09 06:09:56,892 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-09 06:09:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-09 06:09:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-09 06:09:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-09 06:09:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-09 06:09:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:09:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-09 06:09:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-09 06:09:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-09 06:09:56,894 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-09 06:09:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-09 06:09:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-09 06:09:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:09:56,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:09:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-09 06:09:56,897 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-09 06:09:57,103 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:09:57,108 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:09:58,416 INFO L? ?]: Removed 452 outVars from TransFormulas that were not future-live. [2024-11-09 06:09:58,416 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:09:59,325 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:09:59,329 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 06:09:59,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:09:59 BoogieIcfgContainer [2024-11-09 06:09:59,330 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:09:59,332 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:09:59,336 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:09:59,339 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:09:59,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:09:55" (1/3) ... [2024-11-09 06:09:59,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19789a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:09:59, skipping insertion in model container [2024-11-09 06:09:59,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:09:56" (2/3) ... [2024-11-09 06:09:59,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19789a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:09:59, skipping insertion in model container [2024-11-09 06:09:59,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:09:59" (3/3) ... [2024-11-09 06:09:59,343 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product27.cil.c [2024-11-09 06:09:59,362 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:09:59,362 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:09:59,461 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:09:59,470 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;@18c42131, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:09:59,471 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:09:59,478 INFO L276 IsEmpty]: Start isEmpty. Operand has 353 states, 235 states have (on average 1.5702127659574467) internal successors, (369), 251 states have internal predecessors, (369), 93 states have call successors, (93), 23 states have call predecessors, (93), 23 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-09 06:09:59,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 06:09:59,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:09:59,505 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:09:59,505 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:09:59,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:09:59,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2016526635, now seen corresponding path program 1 times [2024-11-09 06:09:59,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:09:59,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513968955] [2024-11-09 06:09:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:09:59,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:09:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:00,474 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 06:10:00,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:10:00,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513968955] [2024-11-09 06:10:00,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513968955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:10:00,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:10:00,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:10:00,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727829746] [2024-11-09 06:10:00,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:00,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:10:00,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:10:00,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:10:00,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:10:00,521 INFO L87 Difference]: Start difference. First operand has 353 states, 235 states have (on average 1.5702127659574467) internal successors, (369), 251 states have internal predecessors, (369), 93 states have call successors, (93), 23 states have call predecessors, (93), 23 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-09 06:10:01,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:01,552 INFO L93 Difference]: Finished difference Result 1037 states and 1657 transitions. [2024-11-09 06:10:01,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:10:01,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 73 [2024-11-09 06:10:01,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:01,579 INFO L225 Difference]: With dead ends: 1037 [2024-11-09 06:10:01,581 INFO L226 Difference]: Without dead ends: 685 [2024-11-09 06:10:01,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:10:01,597 INFO L432 NwaCegarLoop]: 590 mSDtfsCounter, 530 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:10:01,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 2085 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 06:10:01,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2024-11-09 06:10:01,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 679. [2024-11-09 06:10:01,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 455 states have (on average 1.5604395604395604) internal successors, (710), 484 states have internal predecessors, (710), 180 states have call successors, (180), 45 states have call predecessors, (180), 43 states have return successors, (186), 174 states have call predecessors, (186), 178 states have call successors, (186) [2024-11-09 06:10:01,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1076 transitions. [2024-11-09 06:10:01,784 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1076 transitions. Word has length 73 [2024-11-09 06:10:01,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:01,785 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 1076 transitions. [2024-11-09 06:10:01,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-09 06:10:01,786 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1076 transitions. [2024-11-09 06:10:01,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 06:10:01,797 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:01,797 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:10:01,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:10:01,798 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:01,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:01,799 INFO L85 PathProgramCache]: Analyzing trace with hash 167689398, now seen corresponding path program 1 times [2024-11-09 06:10:01,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:10:01,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628264258] [2024-11-09 06:10:01,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:01,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:10:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:02,245 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 06:10:02,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:10:02,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628264258] [2024-11-09 06:10:02,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628264258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:10:02,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:10:02,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:10:02,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422415804] [2024-11-09 06:10:02,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:02,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:10:02,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:10:02,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:10:02,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:10:02,254 INFO L87 Difference]: Start difference. First operand 679 states and 1076 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-09 06:10:03,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:03,061 INFO L93 Difference]: Finished difference Result 770 states and 1196 transitions. [2024-11-09 06:10:03,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:10:03,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 77 [2024-11-09 06:10:03,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:03,068 INFO L225 Difference]: With dead ends: 770 [2024-11-09 06:10:03,068 INFO L226 Difference]: Without dead ends: 768 [2024-11-09 06:10:03,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:10:03,070 INFO L432 NwaCegarLoop]: 611 mSDtfsCounter, 634 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:10:03,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 1590 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 06:10:03,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2024-11-09 06:10:03,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 764. [2024-11-09 06:10:03,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 506 states have (on average 1.5276679841897234) internal successors, (773), 535 states have internal predecessors, (773), 202 states have call successors, (202), 58 states have call predecessors, (202), 55 states have return successors, (214), 194 states have call predecessors, (214), 199 states have call successors, (214) [2024-11-09 06:10:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1189 transitions. [2024-11-09 06:10:03,135 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1189 transitions. Word has length 77 [2024-11-09 06:10:03,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:03,136 INFO L471 AbstractCegarLoop]: Abstraction has 764 states and 1189 transitions. [2024-11-09 06:10:03,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-09 06:10:03,136 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1189 transitions. [2024-11-09 06:10:03,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-09 06:10:03,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:03,141 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 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] [2024-11-09 06:10:03,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:10:03,142 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:03,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:03,143 INFO L85 PathProgramCache]: Analyzing trace with hash -877802949, now seen corresponding path program 1 times [2024-11-09 06:10:03,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:10:03,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951876146] [2024-11-09 06:10:03,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:03,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:10:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 06:10:03,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:10:03,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951876146] [2024-11-09 06:10:03,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951876146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:10:03,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:10:03,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:10:03,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107927382] [2024-11-09 06:10:03,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:03,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:10:03,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:10:03,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:10:03,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:10:03,377 INFO L87 Difference]: Start difference. First operand 764 states and 1189 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-09 06:10:03,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:03,591 INFO L93 Difference]: Finished difference Result 1520 states and 2378 transitions. [2024-11-09 06:10:03,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:10:03,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 108 [2024-11-09 06:10:03,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:03,598 INFO L225 Difference]: With dead ends: 1520 [2024-11-09 06:10:03,599 INFO L226 Difference]: Without dead ends: 768 [2024-11-09 06:10:03,605 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 [2024-11-09 06:10:03,606 INFO L432 NwaCegarLoop]: 510 mSDtfsCounter, 0 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1524 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 [2024-11-09 06:10:03,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1524 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:10:03,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2024-11-09 06:10:03,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 768. [2024-11-09 06:10:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 510 states have (on average 1.5235294117647058) internal successors, (777), 539 states have internal predecessors, (777), 202 states have call successors, (202), 58 states have call predecessors, (202), 55 states have return successors, (214), 194 states have call predecessors, (214), 199 states have call successors, (214) [2024-11-09 06:10:03,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1193 transitions. [2024-11-09 06:10:03,681 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1193 transitions. Word has length 108 [2024-11-09 06:10:03,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:03,683 INFO L471 AbstractCegarLoop]: Abstraction has 768 states and 1193 transitions. [2024-11-09 06:10:03,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-09 06:10:03,683 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1193 transitions. [2024-11-09 06:10:03,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-09 06:10:03,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:03,690 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2024-11-09 06:10:03,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:10:03,690 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:03,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:03,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1185798267, now seen corresponding path program 1 times [2024-11-09 06:10:03,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:10:03,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70356524] [2024-11-09 06:10:03,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:03,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:10:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-09 06:10:03,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:10:03,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70356524] [2024-11-09 06:10:03,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70356524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:10:03,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633621072] [2024-11-09 06:10:03,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:03,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:10:03,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:10:03,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:10:03,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:10:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:04,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 1230 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:10:04,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:10:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-09 06:10:04,454 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:10:04,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633621072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:10:04,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:10:04,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 06:10:04,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300312292] [2024-11-09 06:10:04,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:04,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:10:04,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:10:04,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:10:04,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:10:04,458 INFO L87 Difference]: Start difference. First operand 768 states and 1193 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 06:10:04,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:04,949 INFO L93 Difference]: Finished difference Result 1614 states and 2556 transitions. [2024-11-09 06:10:04,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:10:04,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 111 [2024-11-09 06:10:04,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:04,957 INFO L225 Difference]: With dead ends: 1614 [2024-11-09 06:10:04,958 INFO L226 Difference]: Without dead ends: 858 [2024-11-09 06:10:04,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:10:04,966 INFO L432 NwaCegarLoop]: 450 mSDtfsCounter, 144 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:10:04,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1327 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:10:04,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2024-11-09 06:10:05,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 846. [2024-11-09 06:10:05,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 586 states have (on average 1.575085324232082) internal successors, (923), 615 states have internal predecessors, (923), 202 states have call successors, (202), 60 states have call predecessors, (202), 57 states have return successors, (214), 194 states have call predecessors, (214), 199 states have call successors, (214) [2024-11-09 06:10:05,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1339 transitions. [2024-11-09 06:10:05,035 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1339 transitions. Word has length 111 [2024-11-09 06:10:05,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:05,036 INFO L471 AbstractCegarLoop]: Abstraction has 846 states and 1339 transitions. [2024-11-09 06:10:05,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 06:10:05,036 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1339 transitions. [2024-11-09 06:10:05,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-09 06:10:05,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:05,040 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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] [2024-11-09 06:10:05,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 06:10:05,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:10:05,245 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:05,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:05,247 INFO L85 PathProgramCache]: Analyzing trace with hash -11522779, now seen corresponding path program 1 times [2024-11-09 06:10:05,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:10:05,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525613190] [2024-11-09 06:10:05,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:05,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:10:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 06:10:05,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:10:05,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525613190] [2024-11-09 06:10:05,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525613190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:10:05,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893025463] [2024-11-09 06:10:05,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:05,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:10:05,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:10:05,460 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:10:05,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:10:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:05,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 1235 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:10:05,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:10:05,876 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-09 06:10:05,876 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:10:05,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893025463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:10:05,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:10:05,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 06:10:05,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613141130] [2024-11-09 06:10:05,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:05,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:10:05,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:10:05,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:10:05,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:10:05,884 INFO L87 Difference]: Start difference. First operand 846 states and 1339 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 06:10:06,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:06,308 INFO L93 Difference]: Finished difference Result 1776 states and 2850 transitions. [2024-11-09 06:10:06,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:10:06,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 116 [2024-11-09 06:10:06,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:06,316 INFO L225 Difference]: With dead ends: 1776 [2024-11-09 06:10:06,316 INFO L226 Difference]: Without dead ends: 942 [2024-11-09 06:10:06,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:10:06,322 INFO L432 NwaCegarLoop]: 449 mSDtfsCounter, 142 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1324 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 [2024-11-09 06:10:06,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1324 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:10:06,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2024-11-09 06:10:06,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 924. [2024-11-09 06:10:06,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 662 states have (on average 1.6148036253776434) internal successors, (1069), 691 states have internal predecessors, (1069), 202 states have call successors, (202), 62 states have call predecessors, (202), 59 states have return successors, (214), 194 states have call predecessors, (214), 199 states have call successors, (214) [2024-11-09 06:10:06,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1485 transitions. [2024-11-09 06:10:06,376 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1485 transitions. Word has length 116 [2024-11-09 06:10:06,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:06,377 INFO L471 AbstractCegarLoop]: Abstraction has 924 states and 1485 transitions. [2024-11-09 06:10:06,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 06:10:06,377 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1485 transitions. [2024-11-09 06:10:06,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-09 06:10:06,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:06,381 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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] [2024-11-09 06:10:06,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:10:06,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:10:06,586 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:06,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:06,586 INFO L85 PathProgramCache]: Analyzing trace with hash -331538859, now seen corresponding path program 1 times [2024-11-09 06:10:06,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:10:06,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134205605] [2024-11-09 06:10:06,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:06,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:10:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:06,762 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-09 06:10:06,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:10:06,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134205605] [2024-11-09 06:10:06,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134205605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:10:06,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907339902] [2024-11-09 06:10:06,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:06,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:10:06,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:10:06,765 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:10:06,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:10:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:07,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 1239 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:10:07,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:10:07,182 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 06:10:07,182 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:10:07,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907339902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:10:07,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:10:07,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 06:10:07,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737676411] [2024-11-09 06:10:07,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:07,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:10:07,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:10:07,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:10:07,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:10:07,187 INFO L87 Difference]: Start difference. First operand 924 states and 1485 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 06:10:07,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:07,584 INFO L93 Difference]: Finished difference Result 1938 states and 3144 transitions. [2024-11-09 06:10:07,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:10:07,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 120 [2024-11-09 06:10:07,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:07,592 INFO L225 Difference]: With dead ends: 1938 [2024-11-09 06:10:07,592 INFO L226 Difference]: Without dead ends: 1026 [2024-11-09 06:10:07,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:10:07,598 INFO L432 NwaCegarLoop]: 448 mSDtfsCounter, 140 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1321 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 [2024-11-09 06:10:07,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1321 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:10:07,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2024-11-09 06:10:07,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1002. [2024-11-09 06:10:07,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 738 states have (on average 1.646341463414634) internal successors, (1215), 767 states have internal predecessors, (1215), 202 states have call successors, (202), 64 states have call predecessors, (202), 61 states have return successors, (214), 194 states have call predecessors, (214), 199 states have call successors, (214) [2024-11-09 06:10:07,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1631 transitions. [2024-11-09 06:10:07,649 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1631 transitions. Word has length 120 [2024-11-09 06:10:07,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:07,650 INFO L471 AbstractCegarLoop]: Abstraction has 1002 states and 1631 transitions. [2024-11-09 06:10:07,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 06:10:07,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1631 transitions. [2024-11-09 06:10:07,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 06:10:07,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:07,654 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 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] [2024-11-09 06:10:07,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:10:07,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:10:07,859 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:07,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:07,860 INFO L85 PathProgramCache]: Analyzing trace with hash 401797979, now seen corresponding path program 1 times [2024-11-09 06:10:07,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:10:07,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710937442] [2024-11-09 06:10:07,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:07,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:10:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:08,043 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-09 06:10:08,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:10:08,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710937442] [2024-11-09 06:10:08,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710937442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:10:08,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438390377] [2024-11-09 06:10:08,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:08,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:10:08,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:10:08,047 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:10:08,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 06:10:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:08,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 1242 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:10:08,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:10:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 06:10:08,478 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:10:08,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438390377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:10:08,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:10:08,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 06:10:08,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635081720] [2024-11-09 06:10:08,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:10:08,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:10:08,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:10:08,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:10:08,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:10:08,481 INFO L87 Difference]: Start difference. First operand 1002 states and 1631 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 06:10:08,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:08,914 INFO L93 Difference]: Finished difference Result 2100 states and 3438 transitions. [2024-11-09 06:10:08,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:10:08,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 123 [2024-11-09 06:10:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:08,928 INFO L225 Difference]: With dead ends: 2100 [2024-11-09 06:10:08,928 INFO L226 Difference]: Without dead ends: 1110 [2024-11-09 06:10:08,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:10:08,935 INFO L432 NwaCegarLoop]: 445 mSDtfsCounter, 138 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:10:08,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1311 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:10:08,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2024-11-09 06:10:08,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1080. [2024-11-09 06:10:08,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 814 states have (on average 1.671990171990172) internal successors, (1361), 843 states have internal predecessors, (1361), 202 states have call successors, (202), 66 states have call predecessors, (202), 63 states have return successors, (214), 194 states have call predecessors, (214), 199 states have call successors, (214) [2024-11-09 06:10:08,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1777 transitions. [2024-11-09 06:10:08,997 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1777 transitions. Word has length 123 [2024-11-09 06:10:08,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:08,999 INFO L471 AbstractCegarLoop]: Abstraction has 1080 states and 1777 transitions. [2024-11-09 06:10:08,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 06:10:08,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1777 transitions. [2024-11-09 06:10:09,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 06:10:09,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:09,004 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:10:09,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 06:10:09,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:10:09,205 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:09,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:09,206 INFO L85 PathProgramCache]: Analyzing trace with hash -2100314615, now seen corresponding path program 1 times [2024-11-09 06:10:09,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:10:09,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540210776] [2024-11-09 06:10:09,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:09,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:10:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-09 06:10:09,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:10:09,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540210776] [2024-11-09 06:10:09,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540210776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:10:09,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760442282] [2024-11-09 06:10:09,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:09,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:10:09,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:10:09,479 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:10:09,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c114031f-fb41-4665-899e-41bfaba98243/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 06:10:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:10:09,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 1238 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 06:10:09,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:10:11,518 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-09 06:10:11,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:11:14,185 WARN L286 SmtUtils]: Spent 1.04m on a formula simplification. DAG size of input: 773 DAG size of output: 57 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 06:12:16,152 WARN L286 SmtUtils]: Spent 1.01m on a formula simplification. DAG size of input: 773 DAG size of output: 57 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 06:14:27,982 WARN L286 SmtUtils]: Spent 2.18m on a formula simplification. DAG size of input: 1443 DAG size of output: 53 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 06:15:38,855 WARN L286 SmtUtils]: Spent 1.11m on a formula simplification. DAG size of input: 773 DAG size of output: 57 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 06:16:43,648 WARN L286 SmtUtils]: Spent 1.07m on a formula simplification. DAG size of input: 773 DAG size of output: 57 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 06:16:44,038 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 06:16:44,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760442282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:16:44,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1839112507] [2024-11-09 06:16:44,065 INFO L159 IcfgInterpreter]: Started Sifa with 87 locations of interest [2024-11-09 06:16:44,065 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:16:44,070 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:16:44,077 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:16:44,078 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:16:52,558 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 569 for LOIs [2024-11-09 06:17:05,022 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 573 for LOIs [2024-11-09 06:17:05,814 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 566 for LOIs [2024-11-09 06:18:09,049 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 451 for LOIs [2024-11-09 06:18:09,363 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 451 for LOIs [2024-11-09 06:18:17,815 INFO L197 IcfgInterpreter]: Interpreting procedure isPersonOnFloor with input of size 454 for LOIs [2024-11-09 06:18:23,728 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedAtCurrentFloor__wrappee__empty with input of size 433 for LOIs [2024-11-09 06:18:26,468 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 58 for LOIs [2024-11-09 06:18:26,526 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 501 for LOIs [2024-11-09 06:18:26,958 INFO L197 IcfgInterpreter]: Interpreting procedure resetCallOnFloor with input of size 459 for LOIs [2024-11-09 06:18:27,438 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:18:33,302 WARN L286 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 572 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:18:43,961 WARN L286 SmtUtils]: Spent 5.30s on a formula simplification that was a NOOP. DAG size: 499 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:18:50,441 WARN L286 SmtUtils]: Spent 6.16s on a formula simplification that was a NOOP. DAG size: 569 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:18:55,846 WARN L286 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 501 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:19:07,044 WARN L286 SmtUtils]: Spent 6.12s on a formula simplification that was a NOOP. DAG size: 571 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:19:13,352 WARN L286 SmtUtils]: Spent 5.96s on a formula simplification that was a NOOP. DAG size: 571 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:19:19,708 WARN L286 SmtUtils]: Spent 6.00s on a formula simplification that was a NOOP. DAG size: 573 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:19:26,031 WARN L286 SmtUtils]: Spent 5.97s on a formula simplification that was a NOOP. DAG size: 573 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:19:40,003 WARN L286 SmtUtils]: Spent 5.13s on a formula simplification that was a NOOP. DAG size: 566 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:19:50,643 WARN L286 SmtUtils]: Spent 9.53s on a formula simplification. DAG size of input: 451 DAG size of output: 451 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:19:57,269 WARN L286 SmtUtils]: Spent 5.25s on a formula simplification that was a NOOP. DAG size: 572 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:20:02,922 WARN L286 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 572 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:20:21,875 WARN L286 SmtUtils]: Spent 9.88s on a formula simplification that was a NOOP. DAG size: 627 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:20:34,245 WARN L286 SmtUtils]: Spent 10.50s on a formula simplification. DAG size of input: 630 DAG size of output: 627 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:20:48,430 WARN L286 SmtUtils]: Spent 11.96s on a formula simplification. DAG size of input: 630 DAG size of output: 627 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:20:58,997 WARN L286 SmtUtils]: Spent 6.53s on a formula simplification that was a NOOP. DAG size: 578 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:21:07,509 WARN L286 SmtUtils]: Spent 7.69s on a formula simplification. DAG size of input: 454 DAG size of output: 455 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:21:16,149 WARN L286 SmtUtils]: Spent 7.92s on a formula simplification. DAG size of input: 458 DAG size of output: 459 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:21:23,515 WARN L286 SmtUtils]: Spent 6.52s on a formula simplification. DAG size of input: 456 DAG size of output: 457 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:21:31,598 WARN L286 SmtUtils]: Spent 6.57s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:21:39,948 WARN L286 SmtUtils]: Spent 5.98s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:21:48,936 WARN L286 SmtUtils]: Spent 6.70s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:21:57,915 WARN L286 SmtUtils]: Spent 6.67s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:22:05,592 WARN L286 SmtUtils]: Spent 6.75s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:22:13,302 WARN L286 SmtUtils]: Spent 6.74s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:22:30,911 WARN L286 SmtUtils]: Spent 6.32s on a formula simplification that was a NOOP. DAG size: 566 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:22:38,803 WARN L286 SmtUtils]: Spent 6.38s on a formula simplification that was a NOOP. DAG size: 568 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:22:46,158 WARN L286 SmtUtils]: Spent 6.49s on a formula simplification that was a NOOP. DAG size: 568 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:23:03,935 WARN L286 SmtUtils]: Spent 6.59s on a formula simplification that was a NOOP. DAG size: 574 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:23:11,365 WARN L286 SmtUtils]: Spent 6.48s on a formula simplification that was a NOOP. DAG size: 574 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:23:18,860 WARN L286 SmtUtils]: Spent 6.51s on a formula simplification that was a NOOP. DAG size: 574 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:23:18,865 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25592#(and (= 30 (select |#length| 34)) (= ~personOnFloor_3_2~0 |old(~personOnFloor_3_2~0)|) (= (select (select |#memory_int| 23) 0) 32) (= |old(~floorButtons_2~0)| 0) (= 6 (select |#length| 18)) (= 116 (select (select |#memory_int| 7) 2)) (= (select |#valid| 30) 1) (= (select (select |#memory_int| 20) 1) 37) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= ~executiveFloor~0 4) (exists ((|v_timeShift___utac_acc__Specification14_spec__1_~tmp___2~6#1_12| Int)) (and (<= 0 (+ |v_timeShift___utac_acc__Specification14_spec__1_~tmp___2~6#1_12| 2147483648)) (<= |v_timeShift___utac_acc__Specification14_spec__1_~tmp___2~6#1_12| 2147483647) (not (= |v_timeShift___utac_acc__Specification14_spec__1_~tmp___2~6#1_12| 0)))) (= (select |#length| 21) 4) (= (select (select |#memory_int| 21) 1) 37) (<= 1 |#StackHeapBarrier|) (= (select (select |#memory_int| 23) 1) 37) (= (select (select |#memory_int| 20) 3) 0) (= (select (select |#memory_int| 22) 3) 0) (= (select (select |#memory_int| 5) 3) 0) (= |old(~persons_1~0)| 0) (= 4 (select |#length| 16)) (= 3 (select |#length| 10)) (= ~floorButtons_3~0 0) (= ~personOnFloor_5_2~0 |old(~personOnFloor_5_2~0)|) (= ~personOnFloor_5_4~0 |old(~personOnFloor_5_4~0)|) (= (select (select |#memory_int| 22) 0) 32) (= (select (select |#memory_int| 13) 3) 0) (= (select |#valid| 26) 1) (= (select |#length| 4) 10) (= |old(~persons_5~0)| 0) (= |old(~doorState~0)| 1) (= (select |#length| 8) 3) (= (select |#length| 6) 4) (= ~personOnFloor_2_1~0 |old(~personOnFloor_2_1~0)|) (= |old(~persons_2~0)| 0) (= (select (select |#memory_int| 13) 1) 37) (= (select |#valid| 35) 1) (= (select |#valid| 9) 1) (= ~personOnFloor_2_3~0 |old(~personOnFloor_2_3~0)|) (= ~persons_5~0 0) (= 30 (select |#length| 25)) (exists ((|v_stopRequestedAtCurrentFloor__wrappee__empty_#t~ret28#1_18| Int)) (and (<= 0 (+ |v_stopRequestedAtCurrentFloor__wrappee__empty_#t~ret28#1_18| 2147483648)) (not (= |v_stopRequestedAtCurrentFloor__wrappee__empty_#t~ret28#1_18| 0)) (<= |v_stopRequestedAtCurrentFloor__wrappee__empty_#t~ret28#1_18| 2147483647))) (= (select (select |#memory_int| 18) 5) 0) (= (select (select |#memory_int| 20) 0) 32) (= |old(~persons_4~0)| 0) (= ~weight~0 0) (= ~personOnFloor_0_2~0 |old(~personOnFloor_0_2~0)|) (= (select (select |#memory_int| 6) 0) 91) (= |old(~floorButtons_0~0)| 0) (= (select |#valid| 11) 1) (= (select |#length| 9) 10) (= ~personOnFloor_1_1~0 |old(~personOnFloor_1_1~0)|) (= (select |#valid| 27) 1) (= ~personOnFloor_4_4~0 |old(~personOnFloor_4_4~0)|) (= (select (select |#memory_int| 8) 0) 37) (= (select |#valid| 33) 1) (= 73 (select (select |#memory_int| 12) 1)) (= ~personOnFloor_5_1~0 1) (= (select (select |#memory_int| 22) 1) 37) (= ~personOnFloor_2_0~0 |old(~personOnFloor_2_0~0)|) (= (select (select |#memory_int| 23) 2) 105) (= (select (select |#memory_int| 10) 0) 117) (= (select (select |#memory_int| 19) 2) 105) (= (select |#length| 15) 4) (= ~calls_0~0 0) (= (select (select |#memory_int| 19) 1) 37) (= ~head~0.offset 0) (= 7 (select |#length| 12)) (= ~personOnFloor_0_3~0 |old(~personOnFloor_0_3~0)|) (= (select (select |#memory_int| 22) 2) 105) (= |old(~weight~0)| 0) (= 2 (select |#length| 1)) (= ~personOnFloor_3_4~0 |old(~personOnFloor_3_4~0)|) (= ~currentHeading~0 1) (= (select (select |#memory_int| 16) 2) 105) (= (select (select |#memory_int| 17) 2) 105) (= (select |#length| 19) 4) (= ~persons_4~0 0) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= ~floorButtons_4~0 0) (= (select (select |#memory_int| 18) 4) 58) (= (select |#length| 35) 9) (= (select |#valid| 18) 1) (= 91 (select (select |#memory_int| 5) 0)) (= (select |#valid| 22) 1) (= ~personOnFloor_0_1~0 |old(~personOnFloor_0_1~0)|) (= 70 (select (select |#memory_int| 18) 1)) (= 5 (select |#length| 7)) (= ~personOnFloor_4_0~0 |old(~personOnFloor_4_0~0)|) (= (select |#valid| 24) 1) (= (select (select |#memory_int| 19) 3) 0) (= 32 (select (select |#memory_int| 7) 0)) (= ~personOnFloor_1_4~0 |old(~personOnFloor_1_4~0)|) (= (select (select |#memory_int| 17) 3) 0) (= (select (select |#memory_int| 5) 1) 95) (= (select |#valid| 12) 1) (= (select |#valid| 32) 1) (= ~floorButtons_2~0 0) (= ~personOnFloor_5_0~0 |old(~personOnFloor_5_0~0)|) (= 32 (select |#length| 2)) (= (select |#valid| 28) 1) (= (select |#length| 17) 4) (= ~personOnFloor_3_3~0 |old(~personOnFloor_3_3~0)|) (= (select (select |#memory_int| 13) 2) 105) (= 112 (select (select |#memory_int| 12) 4)) (= (select |#valid| 4) 1) (= (select (select |#memory_int| 16) 1) 37) (= (select |#length| 32) 9) (= ~persons_3~0 0) (= (select (select |#memory_int| 20) 2) 105) (= 112 (select (select |#memory_int| 10) 1)) (= (select (select |#memory_int| 8) 2) 0) (= (select (select |#memory_int| 21) 2) 105) (= 0 (select (select |#memory_int| 7) 4)) (= (select |#length| 13) 4) (= 5 (select |#length| 11)) (= |old(~floorButtons_4~0)| 0) (= (select (select |#memory_int| 17) 1) 37) (= (select (select |#memory_int| 6) 1) 93) (= |old(~persons_0~0)| 0) (= (select |#valid| 1) 1) (= (select |#valid| 20) 1) (= (select |#length| 36) 25) (= ~personOnFloor_2_4~0 |old(~personOnFloor_2_4~0)|) (= ~personOnFloor_4_2~0 |old(~personOnFloor_4_2~0)|) (= ~floorButtons_1~0 0) (= (select |#length| 24) 2) (= ~doorState~0 1) (= ~personOnFloor_2_2~0 |old(~personOnFloor_2_2~0)|) (= (select (select |#memory_int| 12) 6) 0) (= (select |#valid| 21) 1) (= (select (select |#memory_int| 11) 0) 100) (= (select (select |#memory_int| 24) 0) 10) (= ~floorButtons_0~0 0) (= 97 (select (select |#memory_int| 7) 1)) (= (select (select |#memory_int| 15) 1) 37) (= (select |#length| 33) 25) (= (select |#length| 5) 4) (= ~currentFloorID~0 0) (= (select |#valid| 14) 1) (= 21 (select |#length| 30)) (= |old(~persons_3~0)| 0) (= ~persons_1~0 0) (= 112 (select (select |#memory_int| 18) 3)) (= (select |#length| 27) 21) (= 119 (select (select |#memory_int| 11) 2)) (= (select |#valid| 0) 0) (= (select (select |#memory_int| 12) 5) 58) (= ~persons_0~0 0) (= (select (select |#memory_int| 16) 0) 32) (= (select |#valid| 25) 1) (= |old(~floorButtons_3~0)| 0) (= ~head~0.base 0) (= (select (select |#memory_int| 14) 3) 0) (= (select (select |#memory_int| 23) 3) 0) (= 95 (select (select |#memory_int| 12) 3)) (= 105 (select (select |#memory_int| 14) 2)) (= (select |#valid| 2) 1) (= (select (select |#memory_int| 14) 1) 37) (= (select |#valid| 36) 1) (= (select (select |#memory_int| 10) 2) 0) (= (select (select |#memory_int| 1) 0) 48) (= (select (select |#memory_int| 11) 1) 111) (= (select |#valid| 23) 1) (= 9 (select |#length| 29)) (= 32 (select (select |#memory_int| 7) 3)) (= ~personOnFloor_5_3~0 |old(~personOnFloor_5_3~0)|) (= 4 (select |#length| 23)) (= |old(~currentHeading~0)| 1) (= (select (select |#memory_int| 24) 1) 0) (= ~personOnFloor_1_3~0 |old(~personOnFloor_1_3~0)|) (= (select |#length| 20) 4) (= (select (select |#memory_int| 21) 3) 0) (= 76 (select (select |#memory_int| 12) 2)) (= (select |#valid| 19) 1) (= ~personOnFloor_3_1~0 |old(~personOnFloor_3_1~0)|) (= |old(~personOnFloor_5_1~0)| 1) (= 1 |old(~calls_1~0)|) (= (select (select |#memory_int| 15) 0) 32) (= ~personOnFloor_1_2~0 |old(~personOnFloor_1_2~0)|) (= 32 (select (select |#memory_int| 13) 0)) (= (select |#valid| 31) 1) (= (select |#valid| 34) 1) (= (select (select |#memory_int| 6) 3) 0) (= ~personOnFloor_0_0~0 |old(~personOnFloor_0_0~0)|) (= ~personOnFloor_4_1~0 |old(~personOnFloor_4_1~0)|) (= (select |#valid| 16) 1) (= (select (select |#memory_int| 15) 2) 105) (= ~personOnFloor_4_3~0 |old(~personOnFloor_4_3~0)|) (= 32 (select (select |#memory_int| 17) 0)) (= ~personOnFloor_3_0~0 |old(~personOnFloor_3_0~0)|) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 15) 3) 0) (= (select (select |#memory_int| 1) 1) 0) (= |old(~floorButtons_1~0)| 0) (= 30 (select |#length| 28)) (= ~personOnFloor_0_4~0 |old(~personOnFloor_0_4~0)|) (= |old(~currentFloorID~0)| 0) (= (select (select |#memory_int| 5) 2) 93) (= (select (select |#memory_int| 14) 0) 32) (= 30 (select |#length| 31)) (= (select |#valid| 29) 1) (= ~maximumWeight~0 100) (= (select (select |#memory_int| 6) 2) 32) (= 32 (select (select |#memory_int| 12) 0)) (= (select |#valid| 17) 1) (= (select (select |#memory_int| 16) 3) 0) (= (select |#valid| 10) 1) (= ~personOnFloor_1_0~0 |old(~personOnFloor_1_0~0)|) (= (select |#valid| 8) 1) (= (select (select |#memory_int| 11) 4) 0) (= 32 (select (select |#memory_int| 19) 0)) (= (select (select |#memory_int| 18) 2) 95) (= 4 (select |#length| 14)) (= (select |#valid| 13) 1) (= ~cleanupTimeShifts~0 12) (= (select |#length| 22) 4) (= 9 (select |#length| 26)) (= 32 (select (select |#memory_int| 18) 0)) (= ~persons_2~0 0) (= (select (select |#memory_int| 8) 1) 105) (= (select (select |#memory_int| 11) 3) 110) (= 32 (select (select |#memory_int| 21) 0)))' at error location [2024-11-09 06:23:18,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:23:18,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:23:18,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 18, 18] total 37 [2024-11-09 06:23:18,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81076985] [2024-11-09 06:23:18,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:23:18,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-09 06:23:18,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:23:18,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-09 06:23:18,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=767, Invalid=6543, Unknown=0, NotChecked=0, Total=7310 [2024-11-09 06:23:18,872 INFO L87 Difference]: Start difference. First operand 1080 states and 1777 transitions. Second operand has 37 states, 27 states have (on average 6.333333333333333) internal successors, (171), 28 states have internal predecessors, (171), 12 states have call successors, (47), 10 states have call predecessors, (47), 16 states have return successors, (46), 19 states have call predecessors, (46), 12 states have call successors, (46)