./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/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_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/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_e171ed4d-d2f9-4a92-9197-1d76c80e1522/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 a3102ca0659fbbd15269b525dd7b096164ab7cd0af67dfa99033803ea46b0a8e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:41:46,581 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:41:46,690 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 06:41:46,699 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:41:46,700 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:41:46,733 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:41:46,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:41:46,734 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:41:46,734 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:41:46,735 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:41:46,735 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:41:46,736 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:41:46,736 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:41:46,737 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:41:46,737 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:41:46,738 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:41:46,738 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:41:46,739 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:41:46,739 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:41:46,740 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:41:46,746 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:41:46,747 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:41:46,747 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:41:46,748 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:41:46,748 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:41:46,748 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:41:46,749 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:41:46,749 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:41:46,749 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:41:46,753 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:41:46,753 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:41:46,753 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:41:46,754 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:41:46,754 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:41:46,754 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:41:46,755 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:41:46,755 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:41:46,755 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:41:46,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:41:46,756 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:41:46,756 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:41:46,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:41:46,759 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:41:46,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:41:46,760 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:41:46,760 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:41:46,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:41:46,760 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_e171ed4d-d2f9-4a92-9197-1d76c80e1522/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3102ca0659fbbd15269b525dd7b096164ab7cd0af67dfa99033803ea46b0a8e [2024-11-09 06:41:47,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:41:47,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:41:47,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:41:47,068 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:41:47,068 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:41:47,070 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c Unable to find full path for "g++" [2024-11-09 06:41:49,101 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:41:49,439 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:41:49,440 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c [2024-11-09 06:41:49,474 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/data/5ada27662/ea5f513b08444a52b9ac810c8f8097bc/FLAG820271014 [2024-11-09 06:41:49,494 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/data/5ada27662/ea5f513b08444a52b9ac810c8f8097bc [2024-11-09 06:41:49,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:41:49,501 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:41:49,502 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:41:49,504 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:41:49,511 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:41:49,512 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:41:49" (1/1) ... [2024-11-09 06:41:49,515 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@255f12c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:49, skipping insertion in model container [2024-11-09 06:41:49,516 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:41:49" (1/1) ... [2024-11-09 06:41:49,601 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:41:49,904 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_e171ed4d-d2f9-4a92-9197-1d76c80e1522/sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c[3700,3713] [2024-11-09 06:41:50,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:41:50,357 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:41:50,370 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2024-11-09 06:41:50,372 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [86] [2024-11-09 06:41:50,372 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [186] [2024-11-09 06:41:50,373 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [195] [2024-11-09 06:41:50,374 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification14_spec.i","") [315] [2024-11-09 06:41:50,374 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [355] [2024-11-09 06:41:50,374 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [705] [2024-11-09 06:41:50,375 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1071] [2024-11-09 06:41:50,375 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1738] [2024-11-09 06:41:50,376 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3255] [2024-11-09 06:41:50,390 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_e171ed4d-d2f9-4a92-9197-1d76c80e1522/sv-benchmarks/c/product-lines/elevator_spec14_product11.cil.c[3700,3713] [2024-11-09 06:41:50,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:41:50,593 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:41:50,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:50 WrapperNode [2024-11-09 06:41:50,593 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:41:50,594 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:41:50,594 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:41:50,594 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:41:50,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:50" (1/1) ... [2024-11-09 06:41:50,626 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:50" (1/1) ... [2024-11-09 06:41:50,706 INFO L138 Inliner]: procedures = 90, calls = 331, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 1059 [2024-11-09 06:41:50,707 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:41:50,708 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:41:50,708 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:41:50,710 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:41:50,721 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:50" (1/1) ... [2024-11-09 06:41:50,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:50" (1/1) ... [2024-11-09 06:41:50,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:50" (1/1) ... [2024-11-09 06:41:50,729 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:50" (1/1) ... [2024-11-09 06:41:50,782 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:50" (1/1) ... [2024-11-09 06:41:50,804 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:50" (1/1) ... [2024-11-09 06:41:50,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:50" (1/1) ... [2024-11-09 06:41:50,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:50" (1/1) ... [2024-11-09 06:41:50,835 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:41:50,839 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:41:50,840 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:41:50,840 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:41:50,841 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:50" (1/1) ... [2024-11-09 06:41:50,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:41:50,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:41:50,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:41:50,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:41:50,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:41:50,929 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-09 06:41:50,930 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-09 06:41:50,931 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-09 06:41:50,931 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-09 06:41:50,931 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-09 06:41:50,931 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-09 06:41:50,932 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-09 06:41:50,932 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-09 06:41:50,932 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-09 06:41:50,933 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-09 06:41:50,933 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-09 06:41:50,934 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-09 06:41:50,934 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 06:41:50,935 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 06:41:50,935 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 06:41:50,935 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 06:41:50,935 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-09 06:41:50,937 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-09 06:41:50,938 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-09 06:41:50,938 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-09 06:41:50,938 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-09 06:41:50,938 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-09 06:41:50,938 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-09 06:41:50,938 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-09 06:41:50,939 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-09 06:41:50,939 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-09 06:41:50,939 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-09 06:41:50,939 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-09 06:41:50,939 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-09 06:41:50,939 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-09 06:41:50,939 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-09 06:41:50,940 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-09 06:41:50,940 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-09 06:41:50,940 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-09 06:41:50,940 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-09 06:41:50,940 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-09 06:41:50,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:41:50,940 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-09 06:41:50,943 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-09 06:41:50,943 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-09 06:41:50,944 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-09 06:41:50,944 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-09 06:41:50,944 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-09 06:41:50,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:41:50,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:41:50,944 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-09 06:41:50,945 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-09 06:41:51,132 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:41:51,135 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:41:52,505 INFO L? ?]: Removed 434 outVars from TransFormulas that were not future-live. [2024-11-09 06:41:52,505 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:41:53,503 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:41:53,506 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 06:41:53,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:41:53 BoogieIcfgContainer [2024-11-09 06:41:53,507 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:41:53,511 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:41:53,511 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:41:53,515 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:41:53,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:41:49" (1/3) ... [2024-11-09 06:41:53,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de1ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:41:53, skipping insertion in model container [2024-11-09 06:41:53,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:50" (2/3) ... [2024-11-09 06:41:53,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de1ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:41:53, skipping insertion in model container [2024-11-09 06:41:53,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:41:53" (3/3) ... [2024-11-09 06:41:53,518 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product11.cil.c [2024-11-09 06:41:53,544 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:41:53,544 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:41:53,693 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:41:53,702 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;@52fe148b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:41:53,702 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:41:53,709 INFO L276 IsEmpty]: Start isEmpty. Operand has 347 states, 232 states have (on average 1.5775862068965518) internal successors, (366), 248 states have internal predecessors, (366), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-09 06:41:53,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 06:41:53,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:41:53,737 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 06:41:53,737 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:41:53,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:41:53,745 INFO L85 PathProgramCache]: Analyzing trace with hash -241557612, now seen corresponding path program 1 times [2024-11-09 06:41:53,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:41:53,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206814807] [2024-11-09 06:41:53,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:41:53,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:41:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:41:54,737 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 06:41:54,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:41:54,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206814807] [2024-11-09 06:41:54,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206814807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:41:54,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:41:54,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:41:54,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598360234] [2024-11-09 06:41:54,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:41:54,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:41:54,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:41:54,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:41:54,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:41:54,781 INFO L87 Difference]: Start difference. First operand has 347 states, 232 states have (on average 1.5775862068965518) internal successors, (366), 248 states have internal predecessors, (366), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) 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 06:41:55,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:41:55,822 INFO L93 Difference]: Finished difference Result 1019 states and 1636 transitions. [2024-11-09 06:41:55,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:41:55,828 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 06:41:55,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:41:55,858 INFO L225 Difference]: With dead ends: 1019 [2024-11-09 06:41:55,858 INFO L226 Difference]: Without dead ends: 673 [2024-11-09 06:41:55,870 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 06:41:55,876 INFO L432 NwaCegarLoop]: 586 mSDtfsCounter, 523 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:41:55,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 2073 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 06:41:55,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2024-11-09 06:41:56,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 667. [2024-11-09 06:41:56,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 449 states have (on average 1.5679287305122493) internal successors, (704), 478 states have internal predecessors, (704), 176 states have call successors, (176), 43 states have call predecessors, (176), 41 states have return successors, (182), 170 states have call predecessors, (182), 174 states have call successors, (182) [2024-11-09 06:41:56,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1062 transitions. [2024-11-09 06:41:56,053 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1062 transitions. Word has length 73 [2024-11-09 06:41:56,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:41:56,056 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 1062 transitions. [2024-11-09 06:41:56,056 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 06:41:56,057 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1062 transitions. [2024-11-09 06:41:56,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 06:41:56,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:41:56,066 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 06:41:56,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:41:56,070 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:41:56,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:41:56,070 INFO L85 PathProgramCache]: Analyzing trace with hash -418021980, now seen corresponding path program 1 times [2024-11-09 06:41:56,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:41:56,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762130406] [2024-11-09 06:41:56,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:41:56,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:41:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:41:56,675 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 06:41:56,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:41:56,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762130406] [2024-11-09 06:41:56,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762130406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:41:56,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:41:56,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:41:56,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061306683] [2024-11-09 06:41:56,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:41:56,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:41:56,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:41:56,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:41:56,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:41:56,684 INFO L87 Difference]: Start difference. First operand 667 states and 1062 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 06:41:57,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:41:57,499 INFO L93 Difference]: Finished difference Result 758 states and 1182 transitions. [2024-11-09 06:41:57,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:41:57,500 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 06:41:57,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:41:57,508 INFO L225 Difference]: With dead ends: 758 [2024-11-09 06:41:57,508 INFO L226 Difference]: Without dead ends: 756 [2024-11-09 06:41:57,509 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 06:41:57,511 INFO L432 NwaCegarLoop]: 607 mSDtfsCounter, 627 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:41:57,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 1582 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 06:41:57,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2024-11-09 06:41:57,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 752. [2024-11-09 06:41:57,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 500 states have (on average 1.534) internal successors, (767), 529 states have internal predecessors, (767), 198 states have call successors, (198), 56 states have call predecessors, (198), 53 states have return successors, (210), 190 states have call predecessors, (210), 195 states have call successors, (210) [2024-11-09 06:41:57,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1175 transitions. [2024-11-09 06:41:57,612 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1175 transitions. Word has length 77 [2024-11-09 06:41:57,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:41:57,615 INFO L471 AbstractCegarLoop]: Abstraction has 752 states and 1175 transitions. [2024-11-09 06:41:57,615 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 06:41:57,615 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1175 transitions. [2024-11-09 06:41:57,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-09 06:41:57,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:41:57,624 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 06:41:57,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:41:57,624 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:41:57,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:41:57,629 INFO L85 PathProgramCache]: Analyzing trace with hash -527273925, now seen corresponding path program 1 times [2024-11-09 06:41:57,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:41:57,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866632526] [2024-11-09 06:41:57,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:41:57,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:41:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:41:57,918 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 06:41:57,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:41:57,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866632526] [2024-11-09 06:41:57,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866632526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:41:57,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:41:57,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:41:57,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648919478] [2024-11-09 06:41:57,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:41:57,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:41:57,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:41:57,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:41:57,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:41:57,923 INFO L87 Difference]: Start difference. First operand 752 states and 1175 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 06:41:58,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:41:58,140 INFO L93 Difference]: Finished difference Result 1496 states and 2350 transitions. [2024-11-09 06:41:58,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:41:58,141 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 06:41:58,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:41:58,150 INFO L225 Difference]: With dead ends: 1496 [2024-11-09 06:41:58,150 INFO L226 Difference]: Without dead ends: 756 [2024-11-09 06:41:58,158 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 06:41:58,160 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 0 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:41:58,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1512 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:41:58,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2024-11-09 06:41:58,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 756. [2024-11-09 06:41:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 504 states have (on average 1.5297619047619047) internal successors, (771), 533 states have internal predecessors, (771), 198 states have call successors, (198), 56 states have call predecessors, (198), 53 states have return successors, (210), 190 states have call predecessors, (210), 195 states have call successors, (210) [2024-11-09 06:41:58,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1179 transitions. [2024-11-09 06:41:58,244 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1179 transitions. Word has length 108 [2024-11-09 06:41:58,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:41:58,244 INFO L471 AbstractCegarLoop]: Abstraction has 756 states and 1179 transitions. [2024-11-09 06:41:58,245 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 06:41:58,245 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1179 transitions. [2024-11-09 06:41:58,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-09 06:41:58,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:41:58,249 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 06:41:58,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:41:58,249 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:41:58,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:41:58,250 INFO L85 PathProgramCache]: Analyzing trace with hash 44521346, now seen corresponding path program 1 times [2024-11-09 06:41:58,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:41:58,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371650007] [2024-11-09 06:41:58,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:41:58,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:41:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:41:58,535 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 06:41:58,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:41:58,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371650007] [2024-11-09 06:41:58,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371650007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:41:58,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051935388] [2024-11-09 06:41:58,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:41:58,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:41:58,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:41:58,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:41:58,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:41:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:41:58,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:41:58,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:41:59,032 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 06:41:59,032 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:41:59,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051935388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:41:59,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:41:59,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 06:41:59,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838429850] [2024-11-09 06:41:59,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:41:59,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:41:59,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:41:59,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:41:59,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:41:59,039 INFO L87 Difference]: Start difference. First operand 756 states and 1179 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 06:41:59,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:41:59,499 INFO L93 Difference]: Finished difference Result 1590 states and 2528 transitions. [2024-11-09 06:41:59,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:41:59,499 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 06:41:59,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:41:59,508 INFO L225 Difference]: With dead ends: 1590 [2024-11-09 06:41:59,509 INFO L226 Difference]: Without dead ends: 846 [2024-11-09 06:41:59,517 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 06:41:59,518 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 144 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:41:59,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1315 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:41:59,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2024-11-09 06:41:59,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 834. [2024-11-09 06:41:59,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 580 states have (on average 1.5810344827586207) internal successors, (917), 609 states have internal predecessors, (917), 198 states have call successors, (198), 58 states have call predecessors, (198), 55 states have return successors, (210), 190 states have call predecessors, (210), 195 states have call successors, (210) [2024-11-09 06:41:59,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1325 transitions. [2024-11-09 06:41:59,576 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1325 transitions. Word has length 111 [2024-11-09 06:41:59,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:41:59,577 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 1325 transitions. [2024-11-09 06:41:59,577 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 06:41:59,577 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1325 transitions. [2024-11-09 06:41:59,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-09 06:41:59,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:41:59,581 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 06:41:59,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 06:41:59,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:41:59,789 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:41:59,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:41:59,790 INFO L85 PathProgramCache]: Analyzing trace with hash 33272032, now seen corresponding path program 1 times [2024-11-09 06:41:59,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:41:59,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832919458] [2024-11-09 06:41:59,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:41:59,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:41:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:42:00,018 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 06:42:00,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:42:00,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832919458] [2024-11-09 06:42:00,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832919458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:42:00,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065875858] [2024-11-09 06:42:00,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:42:00,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:42:00,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:42:00,028 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:42:00,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:42:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:42:00,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:42:00,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:42:00,520 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 06:42:00,520 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:42:00,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065875858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:42:00,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:42:00,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 06:42:00,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19990974] [2024-11-09 06:42:00,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:42:00,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:42:00,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:42:00,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:42:00,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:42:00,525 INFO L87 Difference]: Start difference. First operand 834 states and 1325 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 06:42:00,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:42:00,996 INFO L93 Difference]: Finished difference Result 1752 states and 2822 transitions. [2024-11-09 06:42:00,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:42:00,997 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 06:42:00,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:42:01,005 INFO L225 Difference]: With dead ends: 1752 [2024-11-09 06:42:01,005 INFO L226 Difference]: Without dead ends: 930 [2024-11-09 06:42:01,011 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 06:42:01,012 INFO L432 NwaCegarLoop]: 445 mSDtfsCounter, 142 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:42:01,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1312 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:42:01,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2024-11-09 06:42:01,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 912. [2024-11-09 06:42:01,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 656 states have (on average 1.6204268292682926) internal successors, (1063), 685 states have internal predecessors, (1063), 198 states have call successors, (198), 60 states have call predecessors, (198), 57 states have return successors, (210), 190 states have call predecessors, (210), 195 states have call successors, (210) [2024-11-09 06:42:01,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1471 transitions. [2024-11-09 06:42:01,073 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1471 transitions. Word has length 116 [2024-11-09 06:42:01,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:42:01,074 INFO L471 AbstractCegarLoop]: Abstraction has 912 states and 1471 transitions. [2024-11-09 06:42:01,074 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 06:42:01,075 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1471 transitions. [2024-11-09 06:42:01,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-09 06:42:01,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:42:01,078 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 06:42:01,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 06:42:01,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:42:01,279 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:42:01,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:42:01,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2101907216, now seen corresponding path program 1 times [2024-11-09 06:42:01,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:42:01,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328962069] [2024-11-09 06:42:01,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:42:01,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:42:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:42:01,494 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 06:42:01,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:42:01,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328962069] [2024-11-09 06:42:01,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328962069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:42:01,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967842232] [2024-11-09 06:42:01,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:42:01,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:42:01,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:42:01,497 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:42:01,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:42:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:42:01,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 1231 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:42:01,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:42:01,973 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 06:42:01,974 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:42:01,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967842232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:42:01,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:42:01,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 06:42:01,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520796458] [2024-11-09 06:42:01,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:42:01,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:42:01,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:42:01,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:42:01,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:42:01,976 INFO L87 Difference]: Start difference. First operand 912 states and 1471 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 06:42:02,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:42:02,493 INFO L93 Difference]: Finished difference Result 1914 states and 3116 transitions. [2024-11-09 06:42:02,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:42:02,494 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 06:42:02,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:42:02,506 INFO L225 Difference]: With dead ends: 1914 [2024-11-09 06:42:02,507 INFO L226 Difference]: Without dead ends: 1014 [2024-11-09 06:42:02,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:42:02,515 INFO L432 NwaCegarLoop]: 444 mSDtfsCounter, 140 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:42:02,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1309 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:42:02,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2024-11-09 06:42:02,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 990. [2024-11-09 06:42:02,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 732 states have (on average 1.651639344262295) internal successors, (1209), 761 states have internal predecessors, (1209), 198 states have call successors, (198), 62 states have call predecessors, (198), 59 states have return successors, (210), 190 states have call predecessors, (210), 195 states have call successors, (210) [2024-11-09 06:42:02,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1617 transitions. [2024-11-09 06:42:02,588 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1617 transitions. Word has length 120 [2024-11-09 06:42:02,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:42:02,588 INFO L471 AbstractCegarLoop]: Abstraction has 990 states and 1617 transitions. [2024-11-09 06:42:02,589 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 06:42:02,589 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1617 transitions. [2024-11-09 06:42:02,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 06:42:02,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:42:02,593 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 06:42:02,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:42:02,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:42:02,797 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:42:02,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:42:02,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1842877026, now seen corresponding path program 1 times [2024-11-09 06:42:02,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:42:02,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247959520] [2024-11-09 06:42:02,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:42:02,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:42:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:42:03,061 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 06:42:03,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:42:03,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247959520] [2024-11-09 06:42:03,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247959520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:42:03,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95927105] [2024-11-09 06:42:03,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:42:03,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:42:03,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:42:03,065 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:42:03,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 06:42:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:42:03,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:42:03,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:42:03,516 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 06:42:03,517 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:42:03,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95927105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:42:03,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:42:03,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 06:42:03,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506602962] [2024-11-09 06:42:03,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:42:03,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:42:03,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:42:03,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:42:03,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:42:03,522 INFO L87 Difference]: Start difference. First operand 990 states and 1617 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 06:42:04,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:42:04,042 INFO L93 Difference]: Finished difference Result 2076 states and 3410 transitions. [2024-11-09 06:42:04,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:42:04,043 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 06:42:04,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:42:04,053 INFO L225 Difference]: With dead ends: 2076 [2024-11-09 06:42:04,054 INFO L226 Difference]: Without dead ends: 1098 [2024-11-09 06:42:04,061 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 06:42:04,062 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 138 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:42:04,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1306 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:42:04,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2024-11-09 06:42:04,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1068. [2024-11-09 06:42:04,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 808 states have (on average 1.676980198019802) internal successors, (1355), 837 states have internal predecessors, (1355), 198 states have call successors, (198), 64 states have call predecessors, (198), 61 states have return successors, (210), 190 states have call predecessors, (210), 195 states have call successors, (210) [2024-11-09 06:42:04,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1763 transitions. [2024-11-09 06:42:04,152 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1763 transitions. Word has length 123 [2024-11-09 06:42:04,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:42:04,153 INFO L471 AbstractCegarLoop]: Abstraction has 1068 states and 1763 transitions. [2024-11-09 06:42:04,153 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 06:42:04,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1763 transitions. [2024-11-09 06:42:04,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 06:42:04,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:42:04,160 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 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] [2024-11-09 06:42:04,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 06:42:04,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:42:04,361 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:42:04,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:42:04,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1727035570, now seen corresponding path program 1 times [2024-11-09 06:42:04,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:42:04,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457144252] [2024-11-09 06:42:04,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:42:04,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:42:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:42:04,578 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-09 06:42:04,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:42:04,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457144252] [2024-11-09 06:42:04,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457144252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:42:04,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:42:04,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:42:04,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174847183] [2024-11-09 06:42:04,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:42:04,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:42:04,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:42:04,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:42:04,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:42:04,582 INFO L87 Difference]: Start difference. First operand 1068 states and 1763 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-09 06:42:05,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:42:05,011 INFO L93 Difference]: Finished difference Result 2242 states and 3700 transitions. [2024-11-09 06:42:05,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:42:05,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 125 [2024-11-09 06:42:05,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:42:05,022 INFO L225 Difference]: With dead ends: 2242 [2024-11-09 06:42:05,023 INFO L226 Difference]: Without dead ends: 1170 [2024-11-09 06:42:05,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:42:05,031 INFO L432 NwaCegarLoop]: 459 mSDtfsCounter, 64 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:42:05,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1327 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:42:05,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2024-11-09 06:42:05,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1136. [2024-11-09 06:42:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 874 states have (on average 1.591533180778032) internal successors, (1391), 903 states have internal predecessors, (1391), 198 states have call successors, (198), 66 states have call predecessors, (198), 63 states have return successors, (210), 190 states have call predecessors, (210), 195 states have call successors, (210) [2024-11-09 06:42:05,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1799 transitions. [2024-11-09 06:42:05,101 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1799 transitions. Word has length 125 [2024-11-09 06:42:05,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:42:05,102 INFO L471 AbstractCegarLoop]: Abstraction has 1136 states and 1799 transitions. [2024-11-09 06:42:05,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-09 06:42:05,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1799 transitions. [2024-11-09 06:42:05,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 06:42:05,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:42:05,107 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:42:05,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 06:42:05,107 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:42:05,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:42:05,108 INFO L85 PathProgramCache]: Analyzing trace with hash 204379105, now seen corresponding path program 1 times [2024-11-09 06:42:05,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:42:05,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587659986] [2024-11-09 06:42:05,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:42:05,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:42:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:42:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-09 06:42:05,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:42:05,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587659986] [2024-11-09 06:42:05,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587659986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:42:05,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:42:05,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:42:05,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746397813] [2024-11-09 06:42:05,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:42:05,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:42:05,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:42:05,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:42:05,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:42:05,481 INFO L87 Difference]: Start difference. First operand 1136 states and 1799 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-09 06:42:06,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:42:06,272 INFO L93 Difference]: Finished difference Result 2331 states and 3678 transitions. [2024-11-09 06:42:06,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 06:42:06,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 125 [2024-11-09 06:42:06,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:42:06,281 INFO L225 Difference]: With dead ends: 2331 [2024-11-09 06:42:06,282 INFO L226 Difference]: Without dead ends: 1024 [2024-11-09 06:42:06,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-09 06:42:06,290 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 522 mSDsluCounter, 1933 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:42:06,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 2446 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:42:06,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2024-11-09 06:42:06,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1002. [2024-11-09 06:42:06,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 724 states have (on average 1.5) internal successors, (1086), 755 states have internal predecessors, (1086), 207 states have call successors, (207), 74 states have call predecessors, (207), 70 states have return successors, (224), 196 states have call predecessors, (224), 204 states have call successors, (224) [2024-11-09 06:42:06,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1517 transitions. [2024-11-09 06:42:06,356 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1517 transitions. Word has length 125 [2024-11-09 06:42:06,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:42:06,356 INFO L471 AbstractCegarLoop]: Abstraction has 1002 states and 1517 transitions. [2024-11-09 06:42:06,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 4 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-09 06:42:06,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1517 transitions. [2024-11-09 06:42:06,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-09 06:42:06,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:42:06,361 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:42:06,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 06:42:06,361 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:42:06,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:42:06,362 INFO L85 PathProgramCache]: Analyzing trace with hash -215031328, now seen corresponding path program 1 times [2024-11-09 06:42:06,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:42:06,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045390728] [2024-11-09 06:42:06,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:42:06,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:42:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:42:08,548 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-09 06:42:08,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:42:08,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045390728] [2024-11-09 06:42:08,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045390728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:42:08,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493406430] [2024-11-09 06:42:08,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:42:08,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:42:08,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:42:08,551 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:42:08,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 06:42:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:42:08,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 1237 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 06:42:08,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:42:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-09 06:42:10,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:43:13,052 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 06:44:14,743 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 06:46:23,044 WARN L286 SmtUtils]: Spent 2.12m 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 06:47:27,937 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 06:48:29,225 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 06:48:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 06:48:29,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493406430] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:48:29,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1751387951] [2024-11-09 06:48:29,606 INFO L159 IcfgInterpreter]: Started Sifa with 84 locations of interest [2024-11-09 06:48:29,606 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:48:29,611 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:48:29,618 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:48:29,618 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:48:36,506 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 565 for LOIs [2024-11-09 06:48:46,402 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 569 for LOIs [2024-11-09 06:48:47,071 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 560 for LOIs [2024-11-09 06:49:41,556 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 447 for LOIs [2024-11-09 06:49:41,855 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 447 for LOIs [2024-11-09 06:49:48,495 INFO L197 IcfgInterpreter]: Interpreting procedure isPersonOnFloor with input of size 450 for LOIs [2024-11-09 06:49:54,180 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedAtCurrentFloor__wrappee__empty with input of size 429 for LOIs [2024-11-09 06:49:56,414 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 53 for LOIs [2024-11-09 06:49:56,453 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 497 for LOIs [2024-11-09 06:49:56,827 INFO L197 IcfgInterpreter]: Interpreting procedure resetCallOnFloor with input of size 455 for LOIs [2024-11-09 06:49:57,118 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:50:02,441 WARN L286 SmtUtils]: Spent 5.02s 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 06:50:17,799 WARN L286 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 565 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:50:33,309 WARN L286 SmtUtils]: Spent 5.90s on a formula simplification that was a NOOP. DAG size: 567 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:50:39,326 WARN L286 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 567 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:50:45,552 WARN L286 SmtUtils]: Spent 5.79s 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 06:50:51,525 WARN L286 SmtUtils]: Spent 5.66s 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 06:51:15,091 WARN L286 SmtUtils]: Spent 9.06s on a formula simplification. DAG size of input: 447 DAG size of output: 447 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:51:45,025 WARN L286 SmtUtils]: Spent 9.44s on a formula simplification that was a NOOP. DAG size: 621 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:51:56,337 WARN L286 SmtUtils]: Spent 9.63s on a formula simplification. DAG size of input: 624 DAG size of output: 621 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:52:07,518 WARN L286 SmtUtils]: Spent 9.51s on a formula simplification. DAG size of input: 624 DAG size of output: 621 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:52:16,223 WARN L286 SmtUtils]: Spent 5.07s 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 06:52:23,088 WARN L286 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 450 DAG size of output: 451 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:52:29,924 WARN L286 SmtUtils]: Spent 6.15s 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 06:52:36,780 WARN L286 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 452 DAG size of output: 453 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:52:43,059 WARN L286 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 576 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:52:50,031 WARN L286 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 576 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:52:57,038 WARN L286 SmtUtils]: Spent 5.15s on a formula simplification that was a NOOP. DAG size: 576 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:53:04,036 WARN L286 SmtUtils]: Spent 5.13s on a formula simplification that was a NOOP. DAG size: 576 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:53:11,052 WARN L286 SmtUtils]: Spent 5.11s on a formula simplification that was a NOOP. DAG size: 576 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:53:18,290 WARN L286 SmtUtils]: Spent 5.11s on a formula simplification that was a NOOP. DAG size: 576 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:53:58,292 WARN L286 SmtUtils]: Spent 5.14s 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 06:54:09,771 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '33986#(and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= ~personOnFloor_3_2~0 |old(~personOnFloor_3_2~0)|) (= (select |#length| 9) 21) (= |old(~floorButtons_2~0)| 0) (= (select (select |#memory_int| 28) 2) 105) (= 32 (select (select |#memory_int| 28) 0)) (= 30 (select |#length| 7)) (= (select |#valid| 30) 1) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select (select |#memory_int| 31) 2) 105) (= (select |#valid| 15) 1) (= ~executiveFloor~0 4) (<= 1 |#StackHeapBarrier|) (= (select (select |#memory_int| 34) 2) 105) (= |old(~persons_1~0)| 0) (= 32 (select (select |#memory_int| 34) 0)) (= ~floorButtons_3~0 0) (= 10 (select |#length| 16)) (= (select |#length| 33) 4) (= ~personOnFloor_5_2~0 |old(~personOnFloor_5_2~0)|) (= ~personOnFloor_5_4~0 |old(~personOnFloor_5_4~0)|) (= (select |#valid| 26) 1) (= |old(~persons_5~0)| 0) (= (select (select |#memory_int| 26) 3) 0) (= (select (select |#memory_int| 20) 2) 0) (= 3 (select |#length| 20)) (= |old(~doorState~0)| 1) (= ~personOnFloor_2_1~0 |old(~personOnFloor_2_1~0)|) (= |old(~persons_2~0)| 0) (= (select |#valid| 35) 1) (= (select |#valid| 9) 1) (= ~personOnFloor_2_3~0 |old(~personOnFloor_2_3~0)|) (= ~persons_5~0 0) (= |old(~persons_4~0)| 0) (= (select (select |#memory_int| 24) 1) 73) (= (select (select |#memory_int| 23) 3) 110) (= ~personOnFloor_0_2~0 |old(~personOnFloor_0_2~0)|) (= 91 (select (select |#memory_int| 18) 0)) (= (select |#length| 12) 25) (= (select (select |#memory_int| 25) 3) 0) (= 91 (select (select |#memory_int| 17) 0)) (= (select (select |#memory_int| 30) 4) 58) (= |old(~floorButtons_0~0)| 0) (= (select |#valid| 11) 1) (= ~personOnFloor_1_1~0 |old(~personOnFloor_1_1~0)|) (= (select |#valid| 27) 1) (= ~personOnFloor_4_4~0 |old(~personOnFloor_4_4~0)|) (= (select |#valid| 33) 1) (= ~personOnFloor_5_1~0 1) (= (select (select |#memory_int| 32) 2) 105) (= 30 (select |#length| 4)) (= (select (select |#memory_int| 29) 2) 105) (= (select |#length| 28) 4) (= 4 (select |#length| 31)) (= (select |#length| 27) 4) (= ~personOnFloor_2_0~0 |old(~personOnFloor_2_0~0)|) (= (select |#length| 22) 3) (= 4 (select |#length| 26)) (= 6 (select |#length| 30)) (= ~calls_0~0 0) (= 112 (select (select |#memory_int| 22) 1)) (= (select (select |#memory_int| 17) 2) 93) (= (select (select |#memory_int| 27) 3) 0) (= 76 (select (select |#memory_int| 24) 2)) (= ~head~0.offset 0) (= ~personOnFloor_0_3~0 |old(~personOnFloor_0_3~0)|) (= (select (select |#memory_int| 32) 3) 0) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select (select |#memory_int| 28) 3) 0) (= (select (select |#memory_int| 29) 3) 0) (= ~personOnFloor_3_4~0 |old(~personOnFloor_3_4~0)|) (= 95 (select (select |#memory_int| 30) 2)) (= ~currentHeading~0 1) (= 32 (select (select |#memory_int| 30) 0)) (= (select (select |#memory_int| 30) 1) 70) (= 4 (select |#length| 25)) (= ~persons_4~0 0) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= ~floorButtons_4~0 0) (= (select |#valid| 18) 1) (= (select |#valid| 22) 1) (= 30 (select |#length| 13)) (= (select (select |#memory_int| 18) 3) 0) (= 2 (select |#length| 36)) (= ~personOnFloor_0_1~0 |old(~personOnFloor_0_1~0)|) (= (select (select |#memory_int| 26) 2) 105) (= (select (select |#memory_int| 34) 1) 37) (= ~personOnFloor_4_0~0 |old(~personOnFloor_4_0~0)|) (= (select (select |#memory_int| 19) 4) 0) (= (select |#valid| 24) 1) (= 30 (select |#length| 10)) (= (select (select |#memory_int| 29) 1) 37) (= (select (select |#memory_int| 25) 1) 37) (= ~personOnFloor_1_4~0 |old(~personOnFloor_1_4~0)|) (= (select (select |#memory_int| 17) 3) 0) (= 4 (select |#length| 34)) (= (select |#valid| 12) 1) (= (select |#valid| 32) 1) (= (select (select |#memory_int| 31) 1) 37) (= ~floorButtons_2~0 0) (= ~personOnFloor_5_0~0 |old(~personOnFloor_5_0~0)|) (= 32 (select |#length| 2)) (= (select |#valid| 28) 1) (= (select (select |#memory_int| 18) 2) 32) (= (select (select |#memory_int| 25) 2) 105) (= (select |#length| 17) 4) (= (select (select |#memory_int| 27) 1) 37) (= (select |#length| 35) 4) (= ~personOnFloor_3_3~0 |old(~personOnFloor_3_3~0)|) (= (select |#valid| 4) 1) (= 5 (select |#length| 23)) (= (select (select |#memory_int| 35) 3) 0) (= ~persons_3~0 0) (= 119 (select (select |#memory_int| 23) 2)) (= 32 (select (select |#memory_int| 24) 0)) (= 32 (select (select |#memory_int| 26) 0)) (= (select (select |#memory_int| 32) 1) 37) (= (select (select |#memory_int| 28) 1) 37) (= |old(~floorButtons_4~0)| 0) (= (select (select |#memory_int| 30) 5) 0) (= (select (select |#memory_int| 22) 2) 0) (= (select (select |#memory_int| 20) 1) 105) (= (select (select |#memory_int| 33) 3) 0) (= |old(~persons_0~0)| 0) (= (select |#valid| 1) 1) (= (select |#valid| 20) 1) (= ~personOnFloor_2_4~0 |old(~personOnFloor_2_4~0)|) (= ~personOnFloor_4_2~0 |old(~personOnFloor_4_2~0)|) (= 97 (select (select |#memory_int| 19) 1)) (= ~floorButtons_1~0 0) (= 32 (select (select |#memory_int| 35) 0)) (= (select |#length| 6) 21) (= (select (select |#memory_int| 36) 1) 0) (= (select (select |#memory_int| 23) 0) 100) (= ~doorState~0 1) (= ~personOnFloor_2_2~0 |old(~personOnFloor_2_2~0)|) (= (select |#valid| 21) 1) (= 7 (select |#length| 24)) (= 58 (select (select |#memory_int| 24) 5)) (= ~floorButtons_0~0 0) (exists ((|v_timeShift___utac_acc__Specification14_spec__1_~tmp___2~0#1_12| Int)) (and (<= |v_timeShift___utac_acc__Specification14_spec__1_~tmp___2~0#1_12| 2147483647) (<= 0 (+ |v_timeShift___utac_acc__Specification14_spec__1_~tmp___2~0#1_12| 2147483648)) (not (= |v_timeShift___utac_acc__Specification14_spec__1_~tmp___2~0#1_12| 0)))) (= (select (select |#memory_int| 24) 6) 0) (= (select (select |#memory_int| 31) 0) 32) (= (select (select |#memory_int| 33) 1) 37) (= ~currentFloorID~0 0) (= 32 (select (select |#memory_int| 27) 0)) (= (select |#valid| 14) 1) (= 95 (select (select |#memory_int| 24) 3)) (= |old(~persons_3~0)| 0) (= ~persons_1~0 0) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= (select (select |#memory_int| 33) 0) 32) (= ~persons_0~0 0) (= (select (select |#memory_int| 35) 1) 37) (= (select |#valid| 25) 1) (= |old(~floorButtons_3~0)| 0) (= 4 (select |#length| 18)) (= ~head~0.base 0) (= (select |#length| 32) 4) (= 112 (select (select |#memory_int| 24) 4)) (= (select (select |#memory_int| 17) 1) 95) (= (select (select |#memory_int| 34) 3) 0) (= (select |#valid| 2) 1) (= (select |#valid| 36) 1) (= 9 (select |#length| 11)) (= (select |#length| 29) 4) (= (select (select |#memory_int| 1) 0) 48) (= (select |#valid| 23) 1) (= ~personOnFloor_5_3~0 |old(~personOnFloor_5_3~0)|) (= 32 (select (select |#memory_int| 29) 0)) (= (select (select |#memory_int| 26) 1) 37) (= |old(~currentHeading~0)| 1) (= ~personOnFloor_1_3~0 |old(~personOnFloor_1_3~0)|) (= 112 (select (select |#memory_int| 30) 3)) (= (select (select |#memory_int| 23) 4) 0) (= (select |#valid| 19) 1) (= ~personOnFloor_3_1~0 |old(~personOnFloor_3_1~0)|) (= |old(~personOnFloor_5_1~0)| 1) (= 1 |old(~calls_1~0)|) (= 32 (select (select |#memory_int| 19) 3)) (= ~personOnFloor_1_2~0 |old(~personOnFloor_1_2~0)|) (= (select |#valid| 31) 1) (= (select |#valid| 34) 1) (= (select (select |#memory_int| 33) 2) 105) (= (select (select |#memory_int| 27) 2) 105) (= ~personOnFloor_0_0~0 |old(~personOnFloor_0_0~0)|) (= ~personOnFloor_4_1~0 |old(~personOnFloor_4_1~0)|) (= (select |#valid| 16) 1) (exists ((|v_stopRequestedAtCurrentFloor__wrappee__empty_#t~ret74#1_18| Int)) (and (<= |v_stopRequestedAtCurrentFloor__wrappee__empty_#t~ret74#1_18| 2147483647) (not (= |v_stopRequestedAtCurrentFloor__wrappee__empty_#t~ret74#1_18| 0)) (<= 0 (+ |v_stopRequestedAtCurrentFloor__wrappee__empty_#t~ret74#1_18| 2147483648)))) (= ~personOnFloor_4_3~0 |old(~personOnFloor_4_3~0)|) (= 111 (select (select |#memory_int| 23) 1)) (= ~personOnFloor_3_0~0 |old(~personOnFloor_3_0~0)|) (= 116 (select (select |#memory_int| 19) 2)) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 20) 0) 37) (= (select (select |#memory_int| 1) 1) 0) (= |old(~floorButtons_1~0)| 0) (= ~personOnFloor_0_4~0 |old(~personOnFloor_0_4~0)|) (= (select (select |#memory_int| 36) 0) 10) (= |old(~currentFloorID~0)| 0) (= (select |#valid| 29) 1) (= (select (select |#memory_int| 22) 0) 117) (= (select (select |#memory_int| 25) 0) 32) (= (select (select |#memory_int| 31) 3) 0) (= (select |#length| 21) 10) (= (select |#valid| 17) 1) (= 93 (select (select |#memory_int| 18) 1)) (= (select |#valid| 10) 1) (= ~personOnFloor_1_0~0 |old(~personOnFloor_1_0~0)|) (= (select |#valid| 8) 1) (= 32 (select (select |#memory_int| 19) 0)) (= (select |#length| 19) 5) (= (select |#valid| 13) 1) (= ~cleanupTimeShifts~0 12) (= (select (select |#memory_int| 35) 2) 105) (= ~persons_2~0 0) (= 32 (select (select |#memory_int| 32) 0)))' at error location [2024-11-09 06:54:09,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:54:09,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:54:09,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 43 [2024-11-09 06:54:09,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121050803] [2024-11-09 06:54:09,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:54:09,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-09 06:54:09,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:54:09,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-09 06:54:09,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=824, Invalid=7918, Unknown=0, NotChecked=0, Total=8742 [2024-11-09 06:54:09,775 INFO L87 Difference]: Start difference. First operand 1002 states and 1517 transitions. Second operand has 43 states, 30 states have (on average 4.6) internal successors, (138), 32 states have internal predecessors, (138), 11 states have call successors, (46), 10 states have call predecessors, (46), 19 states have return successors, (46), 19 states have call predecessors, (46), 11 states have call successors, (46) [2024-11-09 06:55:05,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:55:05,499 INFO L93 Difference]: Finished difference Result 7983 states and 12428 transitions. [2024-11-09 06:55:05,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2024-11-09 06:55:05,500 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 30 states have (on average 4.6) internal successors, (138), 32 states have internal predecessors, (138), 11 states have call successors, (46), 10 states have call predecessors, (46), 19 states have return successors, (46), 19 states have call predecessors, (46), 11 states have call successors, (46) Word has length 126 [2024-11-09 06:55:05,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:55:05,546 INFO L225 Difference]: With dead ends: 7983 [2024-11-09 06:55:05,546 INFO L226 Difference]: Without dead ends: 6024 [2024-11-09 06:55:05,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 373 SyntacticMatches, 9 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30091 ImplicationChecksByTransitivity, 269.8s TimeCoverageRelationStatistics Valid=7214, Invalid=65416, Unknown=0, NotChecked=0, Total=72630 [2024-11-09 06:55:05,582 INFO L432 NwaCegarLoop]: 568 mSDtfsCounter, 13519 mSDsluCounter, 9174 mSDsCounter, 0 mSdLazyCounter, 36780 mSolverCounterSat, 7412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13781 SdHoareTripleChecker+Valid, 9742 SdHoareTripleChecker+Invalid, 44192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 7412 IncrementalHoareTripleChecker+Valid, 36780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:55:05,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13781 Valid, 9742 Invalid, 44192 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [7412 Valid, 36780 Invalid, 0 Unknown, 0 Unchecked, 37.5s Time] [2024-11-09 06:55:05,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6024 states. [2024-11-09 06:55:06,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6024 to 5148. [2024-11-09 06:55:06,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5148 states, 3863 states have (on average 1.4889981879368366) internal successors, (5752), 4021 states have internal predecessors, (5752), 951 states have call successors, (951), 340 states have call predecessors, (951), 333 states have return successors, (1035), 904 states have call predecessors, (1035), 946 states have call successors, (1035) [2024-11-09 06:55:06,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5148 states to 5148 states and 7738 transitions. [2024-11-09 06:55:06,249 INFO L78 Accepts]: Start accepts. Automaton has 5148 states and 7738 transitions. Word has length 126 [2024-11-09 06:55:06,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:55:06,250 INFO L471 AbstractCegarLoop]: Abstraction has 5148 states and 7738 transitions. [2024-11-09 06:55:06,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 30 states have (on average 4.6) internal successors, (138), 32 states have internal predecessors, (138), 11 states have call successors, (46), 10 states have call predecessors, (46), 19 states have return successors, (46), 19 states have call predecessors, (46), 11 states have call successors, (46) [2024-11-09 06:55:06,250 INFO L276 IsEmpty]: Start isEmpty. Operand 5148 states and 7738 transitions. [2024-11-09 06:55:06,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-09 06:55:06,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:55:06,259 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1] [2024-11-09 06:55:06,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 06:55:06,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 06:55:06,463 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:55:06,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:55:06,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1022185274, now seen corresponding path program 1 times [2024-11-09 06:55:06,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:55:06,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697015544] [2024-11-09 06:55:06,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:06,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:55:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:06,784 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-09 06:55:06,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:55:06,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697015544] [2024-11-09 06:55:06,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697015544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:55:06,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482220062] [2024-11-09 06:55:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:06,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:55:06,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:55:06,788 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:55:06,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 06:55:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:07,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 1249 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:55:07,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:55:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-09 06:55:07,428 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:55:07,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482220062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:55:07,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:55:07,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-09 06:55:07,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546606313] [2024-11-09 06:55:07,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:55:07,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:55:07,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:55:07,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:55:07,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:55:07,436 INFO L87 Difference]: Start difference. First operand 5148 states and 7738 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-09 06:55:08,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:55:08,791 INFO L93 Difference]: Finished difference Result 9564 states and 14353 transitions. [2024-11-09 06:55:08,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:55:08,792 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 131 [2024-11-09 06:55:08,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:55:08,835 INFO L225 Difference]: With dead ends: 9564 [2024-11-09 06:55:08,835 INFO L226 Difference]: Without dead ends: 4943 [2024-11-09 06:55:08,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:55:08,947 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 299 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:55:08,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 1806 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 06:55:08,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4943 states. [2024-11-09 06:55:09,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4943 to 4907. [2024-11-09 06:55:09,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4907 states, 3713 states have (on average 1.4944788580662538) internal successors, (5549), 3853 states have internal predecessors, (5549), 877 states have call successors, (877), 323 states have call predecessors, (877), 316 states have return successors, (939), 836 states have call predecessors, (939), 872 states have call successors, (939) [2024-11-09 06:55:09,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4907 states to 4907 states and 7365 transitions. [2024-11-09 06:55:09,418 INFO L78 Accepts]: Start accepts. Automaton has 4907 states and 7365 transitions. Word has length 131 [2024-11-09 06:55:09,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:55:09,418 INFO L471 AbstractCegarLoop]: Abstraction has 4907 states and 7365 transitions. [2024-11-09 06:55:09,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-09 06:55:09,419 INFO L276 IsEmpty]: Start isEmpty. Operand 4907 states and 7365 transitions. [2024-11-09 06:55:09,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-09 06:55:09,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:55:09,436 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 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, 1, 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 06:55:09,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 06:55:09,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:55:09,638 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:55:09,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:55:09,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1578682794, now seen corresponding path program 1 times [2024-11-09 06:55:09,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:55:09,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717196989] [2024-11-09 06:55:09,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:09,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:55:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:10,624 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-09 06:55:10,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:55:10,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717196989] [2024-11-09 06:55:10,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717196989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:55:10,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020706895] [2024-11-09 06:55:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:55:10,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:55:10,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:55:10,627 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:55:10,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e171ed4d-d2f9-4a92-9197-1d76c80e1522/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 06:55:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:55:11,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 1606 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:55:11,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:55:11,565 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 64 proven. 10 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-09 06:55:11,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:55:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-09 06:55:12,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020706895] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:55:12,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [936683554] [2024-11-09 06:55:12,069 INFO L159 IcfgInterpreter]: Started Sifa with 114 locations of interest [2024-11-09 06:55:12,070 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:55:12,070 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:55:12,071 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:55:12,071 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:55:26,049 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 582 for LOIs [2024-11-09 06:55:40,049 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 31 for LOIs [2024-11-09 06:55:40,443 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 1 for LOIs [2024-11-09 06:55:40,469 INFO L197 IcfgInterpreter]: Interpreting procedure isPersonOnFloor with input of size 43 for LOIs [2024-11-09 06:55:40,654 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedAtCurrentFloor__wrappee__empty with input of size 27 for LOIs [2024-11-09 06:55:40,709 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 31 for LOIs [2024-11-09 06:55:40,734 INFO L197 IcfgInterpreter]: Interpreting procedure resetCallOnFloor with input of size 66 for LOIs [2024-11-09 06:55:40,748 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 15 for LOIs [2024-11-09 06:55:40,751 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 565 for LOIs