./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/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_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/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_04be6653-6e76-47d4-89db-34f23d3cb156/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 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:40:07,751 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:40:07,829 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:40:07,835 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:40:07,835 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:40:07,865 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:40:07,866 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:40:07,867 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:40:07,867 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:40:07,868 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:40:07,868 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:40:07,869 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:40:07,869 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:40:07,870 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:40:07,870 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:40:07,871 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:40:07,871 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:40:07,872 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:40:07,872 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:40:07,873 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:40:07,873 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:40:07,877 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:40:07,878 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:40:07,878 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:40:07,879 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:40:07,879 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:40:07,879 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:40:07,880 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:40:07,880 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:40:07,880 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:40:07,881 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:40:07,881 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:40:07,881 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:40:07,882 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:40:07,882 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:40:07,882 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:40:07,883 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:40:07,883 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:40:07,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:40:07,884 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:40:07,884 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:40:07,884 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:40:07,885 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:40:07,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:40:07,885 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:40:07,885 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:40:07,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:40:07,886 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_04be6653-6e76-47d4-89db-34f23d3cb156/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 [2024-11-09 05:40:08,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:40:08,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:40:08,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:40:08,302 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:40:08,303 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:40:08,304 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c Unable to find full path for "g++" [2024-11-09 05:40:10,917 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:40:11,463 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:40:11,466 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2024-11-09 05:40:11,506 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/data/00c2aed26/e83ae3f7bcc8455caa1906c895816cdb/FLAG749dd9d2f [2024-11-09 05:40:11,526 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/data/00c2aed26/e83ae3f7bcc8455caa1906c895816cdb [2024-11-09 05:40:11,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:40:11,532 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:40:11,534 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:40:11,535 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:40:11,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:40:11,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:40:11" (1/1) ... [2024-11-09 05:40:11,546 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c53301e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:11, skipping insertion in model container [2024-11-09 05:40:11,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:40:11" (1/1) ... [2024-11-09 05:40:11,669 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:40:12,488 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_04be6653-6e76-47d4-89db-34f23d3cb156/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c[75121,75134] [2024-11-09 05:40:12,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:40:12,515 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:40:12,530 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2024-11-09 05:40:12,532 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [67] [2024-11-09 05:40:12,533 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [425] [2024-11-09 05:40:12,533 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [545] [2024-11-09 05:40:12,533 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [641] [2024-11-09 05:40:12,534 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2290] [2024-11-09 05:40:12,534 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [2951] [2024-11-09 05:40:12,534 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3138] [2024-11-09 05:40:12,535 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3504] [2024-11-09 05:40:12,535 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3539] [2024-11-09 05:40:12,776 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_04be6653-6e76-47d4-89db-34f23d3cb156/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c[75121,75134] [2024-11-09 05:40:12,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:40:12,830 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:40:12,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:12 WrapperNode [2024-11-09 05:40:12,831 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:40:12,833 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:40:12,833 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:40:12,834 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:40:12,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:12" (1/1) ... [2024-11-09 05:40:12,894 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:12" (1/1) ... [2024-11-09 05:40:12,988 INFO L138 Inliner]: procedures = 96, calls = 359, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 964 [2024-11-09 05:40:12,988 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:40:12,989 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:40:12,990 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:40:12,990 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:40:13,015 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:12" (1/1) ... [2024-11-09 05:40:13,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:12" (1/1) ... [2024-11-09 05:40:13,040 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:12" (1/1) ... [2024-11-09 05:40:13,040 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:12" (1/1) ... [2024-11-09 05:40:13,101 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:12" (1/1) ... [2024-11-09 05:40:13,122 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:12" (1/1) ... [2024-11-09 05:40:13,128 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:12" (1/1) ... [2024-11-09 05:40:13,134 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:12" (1/1) ... [2024-11-09 05:40:13,145 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:40:13,146 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:40:13,146 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:40:13,146 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:40:13,147 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:12" (1/1) ... [2024-11-09 05:40:13,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:40:13,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:40:13,227 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:40:13,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:40:13,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:40:13,291 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-09 05:40:13,292 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-09 05:40:13,292 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-09 05:40:13,292 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-09 05:40:13,292 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-09 05:40:13,292 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-09 05:40:13,293 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-09 05:40:13,293 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-09 05:40:13,293 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-09 05:40:13,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-09 05:40:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-09 05:40:13,294 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-09 05:40:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-09 05:40:13,294 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-09 05:40:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-09 05:40:13,295 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-09 05:40:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 05:40:13,295 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 05:40:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 05:40:13,295 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 05:40:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-09 05:40:13,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-09 05:40:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-09 05:40:13,296 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-09 05:40:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-09 05:40:13,297 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-09 05:40:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-09 05:40:13,297 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-09 05:40:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-09 05:40:13,298 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-09 05:40:13,298 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-11-09 05:40:13,298 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-11-09 05:40:13,298 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-09 05:40:13,299 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-09 05:40:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-11-09 05:40:13,299 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-11-09 05:40:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-09 05:40:13,300 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-09 05:40:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-09 05:40:13,300 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-09 05:40:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-09 05:40:13,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-09 05:40:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-09 05:40:13,301 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-09 05:40:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:40:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-09 05:40:13,301 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-09 05:40:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-09 05:40:13,302 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-09 05:40:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-09 05:40:13,302 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-09 05:40:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-09 05:40:13,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-09 05:40:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-11-09 05:40:13,303 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-11-09 05:40:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:40:13,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:40:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-09 05:40:13,304 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-09 05:40:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-11-09 05:40:13,304 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-11-09 05:40:13,576 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:40:13,581 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:40:15,740 INFO L? ?]: Removed 485 outVars from TransFormulas that were not future-live. [2024-11-09 05:40:15,740 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:40:17,077 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:40:17,081 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 05:40:17,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:40:17 BoogieIcfgContainer [2024-11-09 05:40:17,082 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:40:17,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:40:17,088 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:40:17,092 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:40:17,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:40:11" (1/3) ... [2024-11-09 05:40:17,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7e0c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:40:17, skipping insertion in model container [2024-11-09 05:40:17,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:40:12" (2/3) ... [2024-11-09 05:40:17,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7e0c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:40:17, skipping insertion in model container [2024-11-09 05:40:17,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:40:17" (3/3) ... [2024-11-09 05:40:17,096 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product24.cil.c [2024-11-09 05:40:17,122 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:40:17,123 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:40:17,254 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:40:17,263 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;@53c15d30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:40:17,265 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:40:17,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 434 states, 288 states have (on average 1.5555555555555556) internal successors, (448), 308 states have internal predecessors, (448), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) [2024-11-09 05:40:17,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 05:40:17,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:17,294 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 05:40:17,295 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:17,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:17,305 INFO L85 PathProgramCache]: Analyzing trace with hash 869456165, now seen corresponding path program 1 times [2024-11-09 05:40:17,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:17,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459184625] [2024-11-09 05:40:17,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:17,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:18,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:40:18,614 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:18,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459184625] [2024-11-09 05:40:18,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459184625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:18,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:40:18,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:40:18,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939064806] [2024-11-09 05:40:18,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:18,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:40:18,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:18,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:40:18,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:40:18,674 INFO L87 Difference]: Start difference. First operand has 434 states, 288 states have (on average 1.5555555555555556) internal successors, (448), 308 states have internal predecessors, (448), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-09 05:40:20,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:20,582 INFO L93 Difference]: Finished difference Result 1228 states and 1947 transitions. [2024-11-09 05:40:20,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:40:20,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 49 [2024-11-09 05:40:20,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:20,626 INFO L225 Difference]: With dead ends: 1228 [2024-11-09 05:40:20,626 INFO L226 Difference]: Without dead ends: 796 [2024-11-09 05:40:20,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:40:20,649 INFO L432 NwaCegarLoop]: 638 mSDtfsCounter, 557 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:20,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 2895 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 05:40:20,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2024-11-09 05:40:20,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 789. [2024-11-09 05:40:20,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 525 states have (on average 1.4857142857142858) internal successors, (780), 559 states have internal predecessors, (780), 212 states have call successors, (212), 55 states have call predecessors, (212), 51 states have return successors, (215), 201 states have call predecessors, (215), 208 states have call successors, (215) [2024-11-09 05:40:20,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1207 transitions. [2024-11-09 05:40:20,853 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1207 transitions. Word has length 49 [2024-11-09 05:40:20,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:20,857 INFO L471 AbstractCegarLoop]: Abstraction has 789 states and 1207 transitions. [2024-11-09 05:40:20,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-09 05:40:20,858 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1207 transitions. [2024-11-09 05:40:20,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 05:40:20,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:20,862 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 05:40:20,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:40:20,863 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:20,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:20,865 INFO L85 PathProgramCache]: Analyzing trace with hash -537478654, now seen corresponding path program 1 times [2024-11-09 05:40:20,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:20,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282136107] [2024-11-09 05:40:20,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:20,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:21,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:40:21,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:21,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282136107] [2024-11-09 05:40:21,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282136107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:21,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:40:21,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:40:21,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308389984] [2024-11-09 05:40:21,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:21,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:40:21,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:21,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:40:21,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:40:21,568 INFO L87 Difference]: Start difference. First operand 789 states and 1207 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 05:40:22,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:22,138 INFO L93 Difference]: Finished difference Result 2337 states and 3609 transitions. [2024-11-09 05:40:22,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:40:22,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 50 [2024-11-09 05:40:22,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:22,162 INFO L225 Difference]: With dead ends: 2337 [2024-11-09 05:40:22,162 INFO L226 Difference]: Without dead ends: 1561 [2024-11-09 05:40:22,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:40:22,171 INFO L432 NwaCegarLoop]: 682 mSDtfsCounter, 633 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:22,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1284 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:40:22,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2024-11-09 05:40:22,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1489. [2024-11-09 05:40:22,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 1019 states have (on average 1.4985279685966635) internal successors, (1527), 1071 states have internal predecessors, (1527), 377 states have call successors, (377), 99 states have call predecessors, (377), 92 states have return successors, (397), 346 states have call predecessors, (397), 371 states have call successors, (397) [2024-11-09 05:40:22,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 2301 transitions. [2024-11-09 05:40:22,362 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 2301 transitions. Word has length 50 [2024-11-09 05:40:22,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:22,363 INFO L471 AbstractCegarLoop]: Abstraction has 1489 states and 2301 transitions. [2024-11-09 05:40:22,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 05:40:22,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 2301 transitions. [2024-11-09 05:40:22,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 05:40:22,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:22,380 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 05:40:22,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:40:22,381 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:22,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:22,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1315963912, now seen corresponding path program 1 times [2024-11-09 05:40:22,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:22,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357041023] [2024-11-09 05:40:22,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:22,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 05:40:23,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:23,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357041023] [2024-11-09 05:40:23,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357041023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:23,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:40:23,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:40:23,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821094408] [2024-11-09 05:40:23,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:23,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:40:23,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:23,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:40:23,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:40:23,074 INFO L87 Difference]: Start difference. First operand 1489 states and 2301 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-09 05:40:24,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:24,446 INFO L93 Difference]: Finished difference Result 3698 states and 5820 transitions. [2024-11-09 05:40:24,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:40:24,447 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 94 [2024-11-09 05:40:24,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:24,474 INFO L225 Difference]: With dead ends: 3698 [2024-11-09 05:40:24,474 INFO L226 Difference]: Without dead ends: 2221 [2024-11-09 05:40:24,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:40:24,487 INFO L432 NwaCegarLoop]: 672 mSDtfsCounter, 622 mSDsluCounter, 2396 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 3068 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:24,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 3068 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 05:40:24,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2024-11-09 05:40:24,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 2185. [2024-11-09 05:40:24,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2185 states, 1499 states have (on average 1.4916611074049366) internal successors, (2236), 1583 states have internal predecessors, (2236), 548 states have call successors, (548), 147 states have call predecessors, (548), 137 states have return successors, (617), 497 states have call predecessors, (617), 540 states have call successors, (617) [2024-11-09 05:40:24,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2185 states to 2185 states and 3401 transitions. [2024-11-09 05:40:24,674 INFO L78 Accepts]: Start accepts. Automaton has 2185 states and 3401 transitions. Word has length 94 [2024-11-09 05:40:24,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:24,675 INFO L471 AbstractCegarLoop]: Abstraction has 2185 states and 3401 transitions. [2024-11-09 05:40:24,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-09 05:40:24,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2185 states and 3401 transitions. [2024-11-09 05:40:24,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-09 05:40:24,680 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:24,680 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 05:40:24,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:40:24,681 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:24,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:24,682 INFO L85 PathProgramCache]: Analyzing trace with hash 682352555, now seen corresponding path program 1 times [2024-11-09 05:40:24,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:24,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614062016] [2024-11-09 05:40:24,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:24,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:25,174 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:40:25,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:25,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614062016] [2024-11-09 05:40:25,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614062016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:40:25,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297558628] [2024-11-09 05:40:25,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:25,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:40:25,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:40:25,181 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:40:25,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:40:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:25,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:40:25,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:40:26,029 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:40:26,029 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:40:26,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297558628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:26,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:40:26,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 05:40:26,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126292466] [2024-11-09 05:40:26,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:26,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:40:26,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:26,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:40:26,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:40:26,035 INFO L87 Difference]: Start difference. First operand 2185 states and 3401 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 05:40:26,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:26,663 INFO L93 Difference]: Finished difference Result 6283 states and 10039 transitions. [2024-11-09 05:40:26,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:40:26,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 93 [2024-11-09 05:40:26,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:26,717 INFO L225 Difference]: With dead ends: 6283 [2024-11-09 05:40:26,718 INFO L226 Difference]: Without dead ends: 4110 [2024-11-09 05:40:26,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:40:26,745 INFO L432 NwaCegarLoop]: 1108 mSDtfsCounter, 593 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:26,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 1645 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:40:26,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4110 states. [2024-11-09 05:40:27,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4110 to 3992. [2024-11-09 05:40:27,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3992 states, 2753 states have (on average 1.5041772611696331) internal successors, (4141), 2923 states have internal predecessors, (4141), 981 states have call successors, (981), 264 states have call predecessors, (981), 257 states have return successors, (1150), 890 states have call predecessors, (1150), 973 states have call successors, (1150) [2024-11-09 05:40:27,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 6272 transitions. [2024-11-09 05:40:27,172 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 6272 transitions. Word has length 93 [2024-11-09 05:40:27,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:27,173 INFO L471 AbstractCegarLoop]: Abstraction has 3992 states and 6272 transitions. [2024-11-09 05:40:27,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 05:40:27,174 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 6272 transitions. [2024-11-09 05:40:27,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 05:40:27,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:27,179 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 05:40:27,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:40:27,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:40:27,383 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:27,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:27,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1318075546, now seen corresponding path program 1 times [2024-11-09 05:40:27,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:27,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144607958] [2024-11-09 05:40:27,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:27,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:27,924 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:40:27,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:27,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144607958] [2024-11-09 05:40:27,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144607958] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:40:27,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612203441] [2024-11-09 05:40:27,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:27,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:40:27,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:40:27,932 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:40:27,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:40:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:28,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:40:28,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:40:28,720 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:40:28,721 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:40:28,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612203441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:28,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:40:28,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 05:40:28,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510877093] [2024-11-09 05:40:28,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:28,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:40:28,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:28,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:40:28,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:40:28,725 INFO L87 Difference]: Start difference. First operand 3992 states and 6272 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 05:40:29,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:29,337 INFO L93 Difference]: Finished difference Result 8977 states and 14257 transitions. [2024-11-09 05:40:29,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:40:29,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 94 [2024-11-09 05:40:29,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:29,396 INFO L225 Difference]: With dead ends: 8977 [2024-11-09 05:40:29,397 INFO L226 Difference]: Without dead ends: 4997 [2024-11-09 05:40:29,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:40:29,433 INFO L432 NwaCegarLoop]: 638 mSDtfsCounter, 593 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:29,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 1171 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:40:29,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4997 states. [2024-11-09 05:40:29,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4997 to 4933. [2024-11-09 05:40:29,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4933 states, 3413 states have (on average 1.5145033694696748) internal successors, (5169), 3626 states have internal predecessors, (5169), 1202 states have call successors, (1202), 321 states have call predecessors, (1202), 317 states have return successors, (1408), 1094 states have call predecessors, (1408), 1194 states have call successors, (1408) [2024-11-09 05:40:29,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4933 states to 4933 states and 7779 transitions. [2024-11-09 05:40:29,859 INFO L78 Accepts]: Start accepts. Automaton has 4933 states and 7779 transitions. Word has length 94 [2024-11-09 05:40:29,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:29,860 INFO L471 AbstractCegarLoop]: Abstraction has 4933 states and 7779 transitions. [2024-11-09 05:40:29,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-09 05:40:29,860 INFO L276 IsEmpty]: Start isEmpty. Operand 4933 states and 7779 transitions. [2024-11-09 05:40:29,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-09 05:40:29,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:29,865 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-09 05:40:29,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 05:40:30,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:40:30,067 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:30,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:30,068 INFO L85 PathProgramCache]: Analyzing trace with hash 357404713, now seen corresponding path program 1 times [2024-11-09 05:40:30,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:30,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866962114] [2024-11-09 05:40:30,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:30,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:31,054 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 05:40:31,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:31,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866962114] [2024-11-09 05:40:31,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866962114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:40:31,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454539984] [2024-11-09 05:40:31,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:31,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:40:31,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:40:31,059 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:40:31,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:40:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:31,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:40:31,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:40:31,978 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 05:40:31,979 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:40:31,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454539984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:40:31,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:40:31,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2024-11-09 05:40:31,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712229252] [2024-11-09 05:40:31,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:40:31,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:40:31,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:40:31,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:40:31,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:40:31,983 INFO L87 Difference]: Start difference. First operand 4933 states and 7779 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-09 05:40:32,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:40:32,837 INFO L93 Difference]: Finished difference Result 10754 states and 16982 transitions. [2024-11-09 05:40:32,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:40:32,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 99 [2024-11-09 05:40:32,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:40:32,903 INFO L225 Difference]: With dead ends: 10754 [2024-11-09 05:40:32,903 INFO L226 Difference]: Without dead ends: 5833 [2024-11-09 05:40:32,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-09 05:40:32,949 INFO L432 NwaCegarLoop]: 701 mSDtfsCounter, 416 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:40:32,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 1799 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:40:32,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5833 states. [2024-11-09 05:40:33,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5833 to 5793. [2024-11-09 05:40:33,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5793 states, 3970 states have (on average 1.480352644836272) internal successors, (5877), 4187 states have internal predecessors, (5877), 1397 states have call successors, (1397), 426 states have call predecessors, (1397), 425 states have return successors, (1736), 1285 states have call predecessors, (1736), 1386 states have call successors, (1736) [2024-11-09 05:40:33,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5793 states to 5793 states and 9010 transitions. [2024-11-09 05:40:33,572 INFO L78 Accepts]: Start accepts. Automaton has 5793 states and 9010 transitions. Word has length 99 [2024-11-09 05:40:33,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:40:33,572 INFO L471 AbstractCegarLoop]: Abstraction has 5793 states and 9010 transitions. [2024-11-09 05:40:33,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-09 05:40:33,573 INFO L276 IsEmpty]: Start isEmpty. Operand 5793 states and 9010 transitions. [2024-11-09 05:40:33,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-09 05:40:33,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:40:33,578 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-09 05:40:33,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 05:40:33,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:40:33,782 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:40:33,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:40:33,783 INFO L85 PathProgramCache]: Analyzing trace with hash 363481939, now seen corresponding path program 1 times [2024-11-09 05:40:33,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:40:33,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489820165] [2024-11-09 05:40:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:33,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:40:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:34,787 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 05:40:34,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:40:34,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489820165] [2024-11-09 05:40:34,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489820165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:40:34,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426267197] [2024-11-09 05:40:34,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:40:34,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:40:34,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:40:34,794 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:40:34,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:40:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:40:35,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 05:40:35,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:40:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 05:40:36,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:40:36,670 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 05:40:36,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426267197] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:40:36,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [296946946] [2024-11-09 05:40:36,700 INFO L159 IcfgInterpreter]: Started Sifa with 87 locations of interest [2024-11-09 05:40:36,701 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:40:36,706 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:40:36,713 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:40:36,714 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:40:56,205 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 578 for LOIs [2024-11-09 05:41:19,023 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 450 for LOIs [2024-11-09 05:41:20,676 INFO L197 IcfgInterpreter]: Interpreting procedure initTopDown with input of size 603 for LOIs [2024-11-09 05:41:30,138 INFO L197 IcfgInterpreter]: Interpreting procedure initFloors with input of size 577 for LOIs [2024-11-09 05:41:30,839 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 441 for LOIs [2024-11-09 05:41:31,168 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 441 for LOIs [2024-11-09 05:41:31,513 INFO L197 IcfgInterpreter]: Interpreting procedure bobCall with input of size 577 for LOIs [2024-11-09 05:41:45,466 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 581 for LOIs [2024-11-09 05:41:46,452 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 509 for LOIs [2024-11-09 05:41:46,916 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:41:52,219 WARN L286 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 509 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:42:04,127 WARN L286 SmtUtils]: Spent 6.63s on a formula simplification that was a NOOP. DAG size: 603 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:42:11,129 WARN L286 SmtUtils]: Spent 6.80s on a formula simplification that was a NOOP. DAG size: 603 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:42:17,347 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 577 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:42:38,003 WARN L286 SmtUtils]: Spent 5.99s on a formula simplification that was a NOOP. DAG size: 579 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:42:44,262 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 579 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:42:50,587 WARN L286 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:42:56,888 WARN L286 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:43:10,991 WARN L286 SmtUtils]: Spent 5.27s on a formula simplification that was a NOOP. DAG size: 578 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:43:20,496 WARN L286 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:43:26,189 WARN L286 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:43:35,544 WARN L286 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:43:41,262 WARN L286 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:43:53,701 WARN L286 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 480 DAG size of output: 449 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:43:59,429 WARN L286 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:44:05,229 WARN L286 SmtUtils]: Spent 5.42s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:44:10,965 WARN L286 SmtUtils]: Spent 5.34s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:44:16,747 WARN L286 SmtUtils]: Spent 5.39s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:44:16,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [296946946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:44:16,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:44:16,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [10, 8, 10] total 51 [2024-11-09 05:44:16,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993196877] [2024-11-09 05:44:16,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:44:16,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 05:44:16,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:44:16,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 05:44:16,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=2178, Unknown=0, NotChecked=0, Total=2550 [2024-11-09 05:44:16,756 INFO L87 Difference]: Start difference. First operand 5793 states and 9010 transitions. Second operand has 29 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 18 states have internal predecessors, (53), 9 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 10 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-09 05:44:23,677 WARN L286 SmtUtils]: Spent 5.98s on a formula simplification that was a NOOP. DAG size: 579 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:44:29,926 WARN L286 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:44:36,174 WARN L286 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:44:41,964 WARN L286 SmtUtils]: Spent 5.33s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:44:48,100 WARN L286 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 584 DAG size of output: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:44:53,921 WARN L286 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 586 DAG size of output: 584 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:45:34,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:45:34,715 INFO L93 Difference]: Finished difference Result 11725 states and 18238 transitions. [2024-11-09 05:45:34,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-09 05:45:34,717 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 18 states have internal predecessors, (53), 9 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 10 states have call predecessors, (18), 8 states have call successors, (18) Word has length 100 [2024-11-09 05:45:34,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:45:34,770 INFO L225 Difference]: With dead ends: 11725 [2024-11-09 05:45:34,770 INFO L226 Difference]: Without dead ends: 5944 [2024-11-09 05:45:34,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 185.0s TimeCoverageRelationStatistics Valid=456, Invalid=2736, Unknown=0, NotChecked=0, Total=3192 [2024-11-09 05:45:34,800 INFO L432 NwaCegarLoop]: 614 mSDtfsCounter, 149 mSDsluCounter, 4650 mSDsCounter, 0 mSdLazyCounter, 8167 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 5264 SdHoareTripleChecker+Invalid, 8203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 8167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:45:34,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 5264 Invalid, 8203 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [36 Valid, 8167 Invalid, 0 Unknown, 0 Unchecked, 42.3s Time] [2024-11-09 05:45:34,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5944 states. [2024-11-09 05:45:35,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5944 to 5865. [2024-11-09 05:45:35,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5865 states, 4020 states have (on average 1.4761194029850746) internal successors, (5934), 4236 states have internal predecessors, (5934), 1412 states have call successors, (1412), 435 states have call predecessors, (1412), 432 states have return successors, (1752), 1299 states have call predecessors, (1752), 1401 states have call successors, (1752) [2024-11-09 05:45:35,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5865 states to 5865 states and 9098 transitions. [2024-11-09 05:45:35,456 INFO L78 Accepts]: Start accepts. Automaton has 5865 states and 9098 transitions. Word has length 100 [2024-11-09 05:45:35,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:45:35,457 INFO L471 AbstractCegarLoop]: Abstraction has 5865 states and 9098 transitions. [2024-11-09 05:45:35,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 18 states have internal predecessors, (53), 9 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 10 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-09 05:45:35,460 INFO L276 IsEmpty]: Start isEmpty. Operand 5865 states and 9098 transitions. [2024-11-09 05:45:35,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-09 05:45:35,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:45:35,467 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1] [2024-11-09 05:45:35,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 05:45:35,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:45:35,672 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:45:35,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:45:35,673 INFO L85 PathProgramCache]: Analyzing trace with hash -669555372, now seen corresponding path program 1 times [2024-11-09 05:45:35,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:45:35,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504544321] [2024-11-09 05:45:35,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:45:35,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:45:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:45:36,182 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 05:45:36,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:45:36,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504544321] [2024-11-09 05:45:36,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504544321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:45:36,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628602591] [2024-11-09 05:45:36,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:45:36,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:45:36,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:45:36,186 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:45:36,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:45:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:45:36,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 1807 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 05:45:36,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:45:37,083 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:45:37,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:45:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 05:45:37,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628602591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:45:37,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1725865244] [2024-11-09 05:45:37,420 INFO L159 IcfgInterpreter]: Started Sifa with 91 locations of interest [2024-11-09 05:45:37,420 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:45:37,421 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:45:37,421 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:45:37,421 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:45:53,065 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 578 for LOIs [2024-11-09 05:46:16,564 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 60 for LOIs [2024-11-09 05:46:16,607 INFO L197 IcfgInterpreter]: Interpreting procedure initTopDown with input of size 603 for LOIs [2024-11-09 05:46:25,808 INFO L197 IcfgInterpreter]: Interpreting procedure initFloors with input of size 577 for LOIs [2024-11-09 05:46:26,350 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 441 for LOIs [2024-11-09 05:46:26,582 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 441 for LOIs [2024-11-09 05:46:26,854 INFO L197 IcfgInterpreter]: Interpreting procedure bobCall with input of size 577 for LOIs [2024-11-09 05:46:38,307 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 581 for LOIs [2024-11-09 05:46:39,348 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 509 for LOIs [2024-11-09 05:46:39,851 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:46:56,732 WARN L286 SmtUtils]: Spent 6.61s on a formula simplification that was a NOOP. DAG size: 603 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:47:03,527 WARN L286 SmtUtils]: Spent 6.63s on a formula simplification that was a NOOP. DAG size: 603 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:47:09,716 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 577 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:47:24,850 WARN L286 SmtUtils]: Spent 5.02s on a formula simplification that was a NOOP. DAG size: 511 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:47:31,408 WARN L286 SmtUtils]: Spent 6.32s on a formula simplification that was a NOOP. DAG size: 579 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:47:37,701 WARN L286 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 579 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:47:44,070 WARN L286 SmtUtils]: Spent 6.12s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:47:50,469 WARN L286 SmtUtils]: Spent 6.14s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:48:04,793 WARN L286 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 578 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:48:14,235 WARN L286 SmtUtils]: Spent 5.45s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:48:20,526 WARN L286 SmtUtils]: Spent 5.96s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:48:30,985 WARN L286 SmtUtils]: Spent 5.99s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:48:36,900 WARN L286 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:48:43,299 WARN L286 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:48:49,190 WARN L286 SmtUtils]: Spent 5.50s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:48:55,140 WARN L286 SmtUtils]: Spent 5.55s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:49:01,086 WARN L286 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:49:07,048 WARN L286 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:49:13,024 WARN L286 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:49:13,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1725865244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:49:13,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:49:13,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [10, 8, 10] total 50 [2024-11-09 05:49:13,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102648562] [2024-11-09 05:49:13,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:49:13,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 05:49:13,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:49:13,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 05:49:13,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=2075, Unknown=0, NotChecked=0, Total=2450 [2024-11-09 05:49:13,034 INFO L87 Difference]: Start difference. First operand 5865 states and 9098 transitions. Second operand has 31 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 19 states have internal predecessors, (56), 9 states have call successors, (21), 8 states have call predecessors, (21), 9 states have return successors, (19), 11 states have call predecessors, (19), 8 states have call successors, (19) [2024-11-09 05:49:20,114 WARN L286 SmtUtils]: Spent 6.11s on a formula simplification that was a NOOP. DAG size: 579 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:49:26,454 WARN L286 SmtUtils]: Spent 6.13s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:49:32,901 WARN L286 SmtUtils]: Spent 5.43s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:49:38,760 WARN L286 SmtUtils]: Spent 5.42s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:49:44,769 WARN L286 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:49:50,499 WARN L286 SmtUtils]: Spent 5.53s on a formula simplification that was a NOOP. DAG size: 583 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:50:35,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:50:35,676 INFO L93 Difference]: Finished difference Result 11703 states and 18200 transitions. [2024-11-09 05:50:35,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 05:50:35,677 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 19 states have internal predecessors, (56), 9 states have call successors, (21), 8 states have call predecessors, (21), 9 states have return successors, (19), 11 states have call predecessors, (19), 8 states have call successors, (19) Word has length 106 [2024-11-09 05:50:35,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:50:35,722 INFO L225 Difference]: With dead ends: 11703 [2024-11-09 05:50:35,723 INFO L226 Difference]: Without dead ends: 5934 [2024-11-09 05:50:35,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 188.3s TimeCoverageRelationStatistics Valid=456, Invalid=2624, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 05:50:35,753 INFO L432 NwaCegarLoop]: 607 mSDtfsCounter, 266 mSDsluCounter, 4492 mSDsCounter, 0 mSdLazyCounter, 9473 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 5099 SdHoareTripleChecker+Invalid, 9544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 9473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:50:35,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 5099 Invalid, 9544 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [71 Valid, 9473 Invalid, 0 Unknown, 0 Unchecked, 46.9s Time] [2024-11-09 05:50:35,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5934 states. [2024-11-09 05:50:36,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5934 to 5867. [2024-11-09 05:50:36,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5867 states, 4021 states have (on average 1.4757523004227804) internal successors, (5934), 4237 states have internal predecessors, (5934), 1412 states have call successors, (1412), 436 states have call predecessors, (1412), 433 states have return successors, (1752), 1299 states have call predecessors, (1752), 1401 states have call successors, (1752) [2024-11-09 05:50:36,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5867 states to 5867 states and 9098 transitions. [2024-11-09 05:50:36,461 INFO L78 Accepts]: Start accepts. Automaton has 5867 states and 9098 transitions. Word has length 106 [2024-11-09 05:50:36,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:50:36,461 INFO L471 AbstractCegarLoop]: Abstraction has 5867 states and 9098 transitions. [2024-11-09 05:50:36,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 19 states have internal predecessors, (56), 9 states have call successors, (21), 8 states have call predecessors, (21), 9 states have return successors, (19), 11 states have call predecessors, (19), 8 states have call successors, (19) [2024-11-09 05:50:36,463 INFO L276 IsEmpty]: Start isEmpty. Operand 5867 states and 9098 transitions. [2024-11-09 05:50:36,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-09 05:50:36,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:36,469 INFO L215 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:50:36,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 05:50:36,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:50:36,673 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:50:36,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:36,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1618997643, now seen corresponding path program 1 times [2024-11-09 05:50:36,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:36,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039149807] [2024-11-09 05:50:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:36,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:37,106 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:50:37,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:50:37,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039149807] [2024-11-09 05:50:37,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039149807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:50:37,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047521578] [2024-11-09 05:50:37,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:37,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:50:37,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:50:37,110 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:50:37,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04be6653-6e76-47d4-89db-34f23d3cb156/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:50:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:37,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 1821 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 05:50:37,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:50:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-09 05:50:37,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:50:38,185 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:50:38,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047521578] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:50:38,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1561722296] [2024-11-09 05:50:38,190 INFO L159 IcfgInterpreter]: Started Sifa with 95 locations of interest [2024-11-09 05:50:38,190 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:50:38,190 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:50:38,190 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:50:38,191 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:50:51,053 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 578 for LOIs [2024-11-09 05:51:17,100 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 450 for LOIs [2024-11-09 05:51:17,665 INFO L197 IcfgInterpreter]: Interpreting procedure initTopDown with input of size 603 for LOIs [2024-11-09 05:51:25,002 INFO L197 IcfgInterpreter]: Interpreting procedure initFloors with input of size 577 for LOIs [2024-11-09 05:51:25,552 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 441 for LOIs [2024-11-09 05:51:25,783 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 441 for LOIs [2024-11-09 05:51:26,051 INFO L197 IcfgInterpreter]: Interpreting procedure bobCall with input of size 577 for LOIs [2024-11-09 05:51:36,034 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 581 for LOIs [2024-11-09 05:51:36,760 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 509 for LOIs [2024-11-09 05:51:37,158 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:51:53,569 WARN L286 SmtUtils]: Spent 6.65s on a formula simplification that was a NOOP. DAG size: 603 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:52:00,395 WARN L286 SmtUtils]: Spent 6.64s on a formula simplification that was a NOOP. DAG size: 603 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:52:06,722 WARN L286 SmtUtils]: Spent 6.13s on a formula simplification that was a NOOP. DAG size: 577 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:52:27,578 WARN L286 SmtUtils]: Spent 6.23s on a formula simplification that was a NOOP. DAG size: 579 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:52:33,940 WARN L286 SmtUtils]: Spent 6.13s on a formula simplification that was a NOOP. DAG size: 579 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:52:40,288 WARN L286 SmtUtils]: Spent 6.10s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:52:46,665 WARN L286 SmtUtils]: Spent 6.15s on a formula simplification that was a NOOP. DAG size: 581 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:53:00,905 WARN L286 SmtUtils]: Spent 5.42s on a formula simplification that was a NOOP. DAG size: 578 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:53:10,318 WARN L286 SmtUtils]: Spent 5.44s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:53:16,158 WARN L286 SmtUtils]: Spent 5.55s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:53:25,757 WARN L286 SmtUtils]: Spent 5.56s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:53:31,617 WARN L286 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:53:38,438 WARN L286 SmtUtils]: Spent 6.47s 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 05:53:48,300 WARN L286 SmtUtils]: Spent 9.47s on a formula simplification. DAG size of input: 481 DAG size of output: 453 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:53:54,240 WARN L286 SmtUtils]: Spent 5.55s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:54:00,159 WARN L286 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:54:06,054 WARN L286 SmtUtils]: Spent 5.47s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:54:12,014 WARN L286 SmtUtils]: Spent 5.53s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)