./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6cc96375562d846fbf28439914184b0f5b3d70ee1197dff8e1988bf2754bc90e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:27:10,420 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:27:10,504 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-13 23:27:10,513 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:27:10,517 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:27:10,544 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:27:10,544 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:27:10,545 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:27:10,545 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:27:10,545 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:27:10,545 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:27:10,545 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:27:10,546 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:27:10,546 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:27:10,546 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:27:10,546 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:27:10,546 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:27:10,546 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:27:10,547 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:27:10,548 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:27:10,549 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:27:10,549 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:27:10,549 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:27:10,549 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:27:10,549 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:27:10,549 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:27:10,550 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:27:10,550 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:27:10,550 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:27:10,550 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:27:10,550 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:27:10,550 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:27:10,550 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:27:10,550 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:27:10,550 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:27:10,550 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:27:10,551 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:27:10,551 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:27:10,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:27:10,551 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:27:10,551 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:27:10,551 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:27:10,551 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:27:10,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:27:10,551 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:27:10,552 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:27:10,552 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:27:10,552 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cc96375562d846fbf28439914184b0f5b3d70ee1197dff8e1988bf2754bc90e [2024-11-13 23:27:10,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:27:10,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:27:10,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:27:10,897 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:27:10,898 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:27:10,900 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/product-lines/elevator_spec14_product27.cil.c Unable to find full path for "g++" [2024-11-13 23:27:12,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:27:13,234 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:27:13,238 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/sv-benchmarks/c/product-lines/elevator_spec14_product27.cil.c [2024-11-13 23:27:13,268 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/data/40be138de/eb2762c6ae95413e8e1fef00ee8af897/FLAGdf8e347bd [2024-11-13 23:27:13,289 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/data/40be138de/eb2762c6ae95413e8e1fef00ee8af897 [2024-11-13 23:27:13,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:27:13,293 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:27:13,296 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:27:13,297 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:27:13,301 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:27:13,303 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:27:13" (1/1) ... [2024-11-13 23:27:13,306 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@599312c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:13, skipping insertion in model container [2024-11-13 23:27:13,307 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:27:13" (1/1) ... [2024-11-13 23:27:13,378 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:27:13,573 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_ae025814-88da-4d08-b69c-77302b1fd9d3/sv-benchmarks/c/product-lines/elevator_spec14_product27.cil.c[1546,1559] [2024-11-13 23:27:13,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:27:14,001 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:27:14,012 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-11-13 23:27:14,018 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [57] [2024-11-13 23:27:14,018 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1620] [2024-11-13 23:27:14,018 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1975] [2024-11-13 23:27:14,018 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2066] [2024-11-13 23:27:14,018 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2432] [2024-11-13 23:27:14,018 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2467] [2024-11-13 23:27:14,018 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification14_spec.i","") [2481] [2024-11-13 23:27:14,019 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2517] [2024-11-13 23:27:14,019 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2635] [2024-11-13 23:27:14,026 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_ae025814-88da-4d08-b69c-77302b1fd9d3/sv-benchmarks/c/product-lines/elevator_spec14_product27.cil.c[1546,1559] [2024-11-13 23:27:14,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:27:14,205 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:27:14,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:14 WrapperNode [2024-11-13 23:27:14,207 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:27:14,208 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:27:14,209 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:27:14,210 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:27:14,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:14" (1/1) ... [2024-11-13 23:27:14,253 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:14" (1/1) ... [2024-11-13 23:27:14,319 INFO L138 Inliner]: procedures = 92, calls = 335, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 1093 [2024-11-13 23:27:14,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:27:14,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:27:14,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:27:14,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:27:14,328 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:14" (1/1) ... [2024-11-13 23:27:14,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:14" (1/1) ... [2024-11-13 23:27:14,341 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:14" (1/1) ... [2024-11-13 23:27:14,344 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:14" (1/1) ... [2024-11-13 23:27:14,383 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:14" (1/1) ... [2024-11-13 23:27:14,397 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:14" (1/1) ... [2024-11-13 23:27:14,401 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:14" (1/1) ... [2024-11-13 23:27:14,404 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:14" (1/1) ... [2024-11-13 23:27:14,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:27:14,412 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:27:14,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:27:14,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:27:14,414 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:14" (1/1) ... [2024-11-13 23:27:14,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:27:14,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:27:14,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:27:14,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:27:14,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:27:14,502 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-13 23:27:14,503 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-13 23:27:14,503 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-13 23:27:14,503 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-13 23:27:14,503 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-13 23:27:14,503 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-13 23:27:14,504 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-13 23:27:14,504 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-13 23:27:14,504 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-13 23:27:14,504 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-13 23:27:14,505 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-13 23:27:14,506 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-13 23:27:14,506 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-13 23:27:14,506 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-13 23:27:14,507 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-13 23:27:14,507 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-13 23:27:14,508 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-13 23:27:14,508 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-13 23:27:14,508 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-13 23:27:14,508 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-13 23:27:14,508 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-13 23:27:14,508 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-13 23:27:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-13 23:27:14,509 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-13 23:27:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-13 23:27:14,509 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-13 23:27:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-13 23:27:14,509 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-13 23:27:14,509 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-13 23:27:14,509 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-13 23:27:14,510 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-13 23:27:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-13 23:27:14,511 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-13 23:27:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-13 23:27:14,511 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-13 23:27:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-13 23:27:14,511 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-13 23:27:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-13 23:27:14,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 23:27:14,511 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-13 23:27:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-13 23:27:14,511 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-13 23:27:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-13 23:27:14,511 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-13 23:27:14,512 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-13 23:27:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:27:14,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:27:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-13 23:27:14,512 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-13 23:27:14,724 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:27:14,729 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:27:16,214 INFO L? ?]: Removed 452 outVars from TransFormulas that were not future-live. [2024-11-13 23:27:16,214 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:27:17,443 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:27:17,444 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 23:27:17,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:27:17 BoogieIcfgContainer [2024-11-13 23:27:17,444 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:27:17,451 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:27:17,451 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:27:17,461 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:27:17,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:27:13" (1/3) ... [2024-11-13 23:27:17,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ebaccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:27:17, skipping insertion in model container [2024-11-13 23:27:17,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:27:14" (2/3) ... [2024-11-13 23:27:17,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ebaccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:27:17, skipping insertion in model container [2024-11-13 23:27:17,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:27:17" (3/3) ... [2024-11-13 23:27:17,466 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product27.cil.c [2024-11-13 23:27:17,488 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:27:17,492 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec14_product27.cil.c that has 24 procedures, 353 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 23:27:17,599 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:27:17,617 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;@70bb2fb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:27:17,617 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 23:27:17,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 353 states, 235 states have (on average 1.5702127659574467) internal successors, (369), 251 states have internal predecessors, (369), 93 states have call successors, (93), 23 states have call predecessors, (93), 23 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-13 23:27:17,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-13 23:27:17,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:17,650 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:27:17,650 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:27:17,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:17,655 INFO L85 PathProgramCache]: Analyzing trace with hash 2016526635, now seen corresponding path program 1 times [2024-11-13 23:27:17,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:27:17,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121602263] [2024-11-13 23:27:17,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:17,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:27:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 23:27:18,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:27:18,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121602263] [2024-11-13 23:27:18,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121602263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:18,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:27:18,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 23:27:18,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582702399] [2024-11-13 23:27:18,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:18,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 23:27:18,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:27:18,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 23:27:18,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:27:18,821 INFO L87 Difference]: Start difference. First operand has 353 states, 235 states have (on average 1.5702127659574467) internal successors, (369), 251 states have internal predecessors, (369), 93 states have call successors, (93), 23 states have call predecessors, (93), 23 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-13 23:27:19,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:19,944 INFO L93 Difference]: Finished difference Result 1037 states and 1657 transitions. [2024-11-13 23:27:19,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 23:27:19,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 73 [2024-11-13 23:27:19,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:19,972 INFO L225 Difference]: With dead ends: 1037 [2024-11-13 23:27:19,973 INFO L226 Difference]: Without dead ends: 685 [2024-11-13 23:27:19,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:27:19,990 INFO L432 NwaCegarLoop]: 590 mSDtfsCounter, 530 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:19,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 2085 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 23:27:20,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2024-11-13 23:27:20,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 679. [2024-11-13 23:27:20,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 455 states have (on average 1.5604395604395604) internal successors, (710), 484 states have internal predecessors, (710), 180 states have call successors, (180), 45 states have call predecessors, (180), 43 states have return successors, (186), 174 states have call predecessors, (186), 178 states have call successors, (186) [2024-11-13 23:27:20,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1076 transitions. [2024-11-13 23:27:20,204 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1076 transitions. Word has length 73 [2024-11-13 23:27:20,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:20,206 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 1076 transitions. [2024-11-13 23:27:20,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-13 23:27:20,207 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1076 transitions. [2024-11-13 23:27:20,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 23:27:20,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:20,215 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:27:20,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 23:27:20,216 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:27:20,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:20,216 INFO L85 PathProgramCache]: Analyzing trace with hash 167689398, now seen corresponding path program 1 times [2024-11-13 23:27:20,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:27:20,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932386511] [2024-11-13 23:27:20,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:20,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:27:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 23:27:20,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:27:20,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932386511] [2024-11-13 23:27:20,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932386511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:20,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:27:20,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 23:27:20,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175603348] [2024-11-13 23:27:20,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:20,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 23:27:20,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:27:20,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 23:27:20,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:27:20,987 INFO L87 Difference]: Start difference. First operand 679 states and 1076 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-13 23:27:21,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:21,915 INFO L93 Difference]: Finished difference Result 770 states and 1196 transitions. [2024-11-13 23:27:21,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:27:21,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 77 [2024-11-13 23:27:21,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:21,930 INFO L225 Difference]: With dead ends: 770 [2024-11-13 23:27:21,930 INFO L226 Difference]: Without dead ends: 768 [2024-11-13 23:27:21,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:27:21,932 INFO L432 NwaCegarLoop]: 611 mSDtfsCounter, 634 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:21,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 1590 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 23:27:21,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2024-11-13 23:27:22,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 764. [2024-11-13 23:27:22,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 506 states have (on average 1.5276679841897234) internal successors, (773), 535 states have internal predecessors, (773), 202 states have call successors, (202), 58 states have call predecessors, (202), 55 states have return successors, (214), 194 states have call predecessors, (214), 199 states have call successors, (214) [2024-11-13 23:27:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1189 transitions. [2024-11-13 23:27:22,046 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1189 transitions. Word has length 77 [2024-11-13 23:27:22,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:22,048 INFO L471 AbstractCegarLoop]: Abstraction has 764 states and 1189 transitions. [2024-11-13 23:27:22,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-13 23:27:22,049 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1189 transitions. [2024-11-13 23:27:22,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-13 23:27:22,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:22,061 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:27:22,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 23:27:22,062 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:27:22,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:22,062 INFO L85 PathProgramCache]: Analyzing trace with hash -877802949, now seen corresponding path program 1 times [2024-11-13 23:27:22,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:27:22,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588221988] [2024-11-13 23:27:22,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:22,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:27:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:22,389 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-13 23:27:22,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:27:22,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588221988] [2024-11-13 23:27:22,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588221988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:22,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:27:22,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 23:27:22,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253892197] [2024-11-13 23:27:22,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:22,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:27:22,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:27:22,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:27:22,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:27:22,391 INFO L87 Difference]: Start difference. First operand 764 states and 1189 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-13 23:27:22,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:22,644 INFO L93 Difference]: Finished difference Result 1520 states and 2378 transitions. [2024-11-13 23:27:22,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:27:22,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 108 [2024-11-13 23:27:22,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:22,651 INFO L225 Difference]: With dead ends: 1520 [2024-11-13 23:27:22,651 INFO L226 Difference]: Without dead ends: 768 [2024-11-13 23:27:22,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:27:22,659 INFO L432 NwaCegarLoop]: 510 mSDtfsCounter, 0 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:22,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1524 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 23:27:22,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2024-11-13 23:27:22,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 768. [2024-11-13 23:27:22,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 510 states have (on average 1.5235294117647058) internal successors, (777), 539 states have internal predecessors, (777), 202 states have call successors, (202), 58 states have call predecessors, (202), 55 states have return successors, (214), 194 states have call predecessors, (214), 199 states have call successors, (214) [2024-11-13 23:27:22,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1193 transitions. [2024-11-13 23:27:22,731 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1193 transitions. Word has length 108 [2024-11-13 23:27:22,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:22,732 INFO L471 AbstractCegarLoop]: Abstraction has 768 states and 1193 transitions. [2024-11-13 23:27:22,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-13 23:27:22,732 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1193 transitions. [2024-11-13 23:27:22,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-13 23:27:22,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:22,738 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:27:22,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 23:27:22,738 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:27:22,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:22,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1185798267, now seen corresponding path program 1 times [2024-11-13 23:27:22,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:27:22,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026932381] [2024-11-13 23:27:22,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:22,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:27:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-13 23:27:23,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:27:23,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026932381] [2024-11-13 23:27:23,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026932381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:27:23,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857033305] [2024-11-13 23:27:23,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:23,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:27:23,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:27:23,027 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:27:23,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 23:27:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:23,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 1230 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:27:23,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-13 23:27:23,601 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:27:23,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857033305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:23,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:27:23,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-13 23:27:23,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729121181] [2024-11-13 23:27:23,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:23,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:27:23,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:27:23,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:27:23,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:27:23,604 INFO L87 Difference]: Start difference. First operand 768 states and 1193 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-13 23:27:24,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:24,106 INFO L93 Difference]: Finished difference Result 1614 states and 2556 transitions. [2024-11-13 23:27:24,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:27:24,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 111 [2024-11-13 23:27:24,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:24,113 INFO L225 Difference]: With dead ends: 1614 [2024-11-13 23:27:24,114 INFO L226 Difference]: Without dead ends: 858 [2024-11-13 23:27:24,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:27:24,120 INFO L432 NwaCegarLoop]: 450 mSDtfsCounter, 144 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:24,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1327 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:27:24,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2024-11-13 23:27:24,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 846. [2024-11-13 23:27:24,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 586 states have (on average 1.575085324232082) internal successors, (923), 615 states have internal predecessors, (923), 202 states have call successors, (202), 60 states have call predecessors, (202), 57 states have return successors, (214), 194 states have call predecessors, (214), 199 states have call successors, (214) [2024-11-13 23:27:24,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1339 transitions. [2024-11-13 23:27:24,204 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1339 transitions. Word has length 111 [2024-11-13 23:27:24,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:24,206 INFO L471 AbstractCegarLoop]: Abstraction has 846 states and 1339 transitions. [2024-11-13 23:27:24,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-13 23:27:24,207 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1339 transitions. [2024-11-13 23:27:24,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-13 23:27:24,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:24,213 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:27:24,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 23:27:24,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:27:24,414 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:27:24,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:24,415 INFO L85 PathProgramCache]: Analyzing trace with hash -11522779, now seen corresponding path program 1 times [2024-11-13 23:27:24,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:27:24,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201813899] [2024-11-13 23:27:24,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:24,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:27:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:24,703 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-13 23:27:24,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:27:24,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201813899] [2024-11-13 23:27:24,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201813899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:27:24,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537642721] [2024-11-13 23:27:24,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:24,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:27:24,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:27:24,706 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:27:24,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 23:27:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:25,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 1235 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:27:25,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:25,201 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 23:27:25,201 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:27:25,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537642721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:25,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:27:25,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-13 23:27:25,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209491487] [2024-11-13 23:27:25,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:25,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:27:25,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:27:25,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:27:25,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:27:25,204 INFO L87 Difference]: Start difference. First operand 846 states and 1339 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-13 23:27:25,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:25,646 INFO L93 Difference]: Finished difference Result 1776 states and 2850 transitions. [2024-11-13 23:27:25,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:27:25,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 116 [2024-11-13 23:27:25,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:25,656 INFO L225 Difference]: With dead ends: 1776 [2024-11-13 23:27:25,656 INFO L226 Difference]: Without dead ends: 942 [2024-11-13 23:27:25,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:27:25,663 INFO L432 NwaCegarLoop]: 449 mSDtfsCounter, 142 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:25,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1324 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:27:25,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2024-11-13 23:27:25,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 924. [2024-11-13 23:27:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 662 states have (on average 1.6148036253776434) internal successors, (1069), 691 states have internal predecessors, (1069), 202 states have call successors, (202), 62 states have call predecessors, (202), 59 states have return successors, (214), 194 states have call predecessors, (214), 199 states have call successors, (214) [2024-11-13 23:27:25,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1485 transitions. [2024-11-13 23:27:25,737 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1485 transitions. Word has length 116 [2024-11-13 23:27:25,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:25,737 INFO L471 AbstractCegarLoop]: Abstraction has 924 states and 1485 transitions. [2024-11-13 23:27:25,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-13 23:27:25,738 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1485 transitions. [2024-11-13 23:27:25,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-13 23:27:25,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:25,743 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:27:25,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 23:27:25,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:27:25,948 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:27:25,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:25,948 INFO L85 PathProgramCache]: Analyzing trace with hash -331538859, now seen corresponding path program 1 times [2024-11-13 23:27:25,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:27:25,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761407605] [2024-11-13 23:27:25,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:25,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:27:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:26,208 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-13 23:27:26,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:27:26,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761407605] [2024-11-13 23:27:26,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761407605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:27:26,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274859861] [2024-11-13 23:27:26,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:26,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:27:26,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:27:26,212 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:27:26,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 23:27:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:26,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 1239 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:27:26,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 23:27:26,725 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:27:26,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274859861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:26,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:27:26,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-13 23:27:26,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427905257] [2024-11-13 23:27:26,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:26,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:27:26,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:27:26,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:27:26,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:27:26,732 INFO L87 Difference]: Start difference. First operand 924 states and 1485 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-13 23:27:27,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:27,277 INFO L93 Difference]: Finished difference Result 1938 states and 3144 transitions. [2024-11-13 23:27:27,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:27:27,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 120 [2024-11-13 23:27:27,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:27,294 INFO L225 Difference]: With dead ends: 1938 [2024-11-13 23:27:27,294 INFO L226 Difference]: Without dead ends: 1026 [2024-11-13 23:27:27,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:27:27,303 INFO L432 NwaCegarLoop]: 448 mSDtfsCounter, 140 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:27,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1321 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:27:27,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2024-11-13 23:27:27,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1002. [2024-11-13 23:27:27,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 738 states have (on average 1.646341463414634) internal successors, (1215), 767 states have internal predecessors, (1215), 202 states have call successors, (202), 64 states have call predecessors, (202), 61 states have return successors, (214), 194 states have call predecessors, (214), 199 states have call successors, (214) [2024-11-13 23:27:27,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1631 transitions. [2024-11-13 23:27:27,415 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1631 transitions. Word has length 120 [2024-11-13 23:27:27,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:27,415 INFO L471 AbstractCegarLoop]: Abstraction has 1002 states and 1631 transitions. [2024-11-13 23:27:27,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-13 23:27:27,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1631 transitions. [2024-11-13 23:27:27,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-13 23:27:27,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:27,421 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:27:27,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 23:27:27,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 23:27:27,626 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:27:27,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:27,626 INFO L85 PathProgramCache]: Analyzing trace with hash 401797979, now seen corresponding path program 1 times [2024-11-13 23:27:27,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:27:27,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500058266] [2024-11-13 23:27:27,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:27,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:27:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:27,870 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-13 23:27:27,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:27:27,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500058266] [2024-11-13 23:27:27,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500058266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:27:27,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119798551] [2024-11-13 23:27:27,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:27,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:27:27,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:27:27,878 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:27:27,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 23:27:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:28,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 1242 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:27:28,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:28,370 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 23:27:28,370 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:27:28,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119798551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:27:28,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:27:28,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-13 23:27:28,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959321157] [2024-11-13 23:27:28,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:27:28,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:27:28,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:27:28,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:27:28,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:27:28,373 INFO L87 Difference]: Start difference. First operand 1002 states and 1631 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-13 23:27:28,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:27:28,880 INFO L93 Difference]: Finished difference Result 2100 states and 3438 transitions. [2024-11-13 23:27:28,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:27:28,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 123 [2024-11-13 23:27:28,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:27:28,891 INFO L225 Difference]: With dead ends: 2100 [2024-11-13 23:27:28,891 INFO L226 Difference]: Without dead ends: 1110 [2024-11-13 23:27:28,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:27:28,898 INFO L432 NwaCegarLoop]: 445 mSDtfsCounter, 138 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:27:28,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1311 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:27:28,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2024-11-13 23:27:28,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1080. [2024-11-13 23:27:28,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 814 states have (on average 1.671990171990172) internal successors, (1361), 843 states have internal predecessors, (1361), 202 states have call successors, (202), 66 states have call predecessors, (202), 63 states have return successors, (214), 194 states have call predecessors, (214), 199 states have call successors, (214) [2024-11-13 23:27:28,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1777 transitions. [2024-11-13 23:27:28,965 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1777 transitions. Word has length 123 [2024-11-13 23:27:28,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:27:28,967 INFO L471 AbstractCegarLoop]: Abstraction has 1080 states and 1777 transitions. [2024-11-13 23:27:28,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-13 23:27:28,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1777 transitions. [2024-11-13 23:27:28,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-13 23:27:28,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:27:28,972 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:27:28,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 23:27:29,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:27:29,173 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:27:29,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:27:29,173 INFO L85 PathProgramCache]: Analyzing trace with hash -2100314615, now seen corresponding path program 1 times [2024-11-13 23:27:29,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:27:29,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054409236] [2024-11-13 23:27:29,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:29,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:27:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:29,449 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-13 23:27:29,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:27:29,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054409236] [2024-11-13 23:27:29,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054409236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:27:29,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926965203] [2024-11-13 23:27:29,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:27:29,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:27:29,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:27:29,452 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:27:29,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 23:27:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:27:29,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 1238 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-13 23:27:29,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:27:31,627 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-13 23:27:31,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:28:34,302 WARN L286 SmtUtils]: Spent 1.04m on a formula simplification. DAG size of input: 773 DAG size of output: 57 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-13 23:29:37,077 WARN L286 SmtUtils]: Spent 1.02m on a formula simplification. DAG size of input: 773 DAG size of output: 57 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-13 23:31:41,813 WARN L286 SmtUtils]: Spent 2.06m on a formula simplification. DAG size of input: 1443 DAG size of output: 53 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-13 23:32:43,687 WARN L286 SmtUtils]: Spent 58.01s on a formula simplification. DAG size of input: 773 DAG size of output: 57 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-13 23:33:42,255 WARN L286 SmtUtils]: Spent 57.85s on a formula simplification. DAG size of input: 773 DAG size of output: 57 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-13 23:33:42,584 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-13 23:33:42,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926965203] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:33:42,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1539316855] [2024-11-13 23:33:42,615 INFO L159 IcfgInterpreter]: Started Sifa with 87 locations of interest [2024-11-13 23:33:42,615 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:33:42,618 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:33:42,623 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:33:42,623 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:33:48,075 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 569 for LOIs [2024-11-13 23:33:56,016 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 573 for LOIs [2024-11-13 23:33:56,548 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 566 for LOIs [2024-11-13 23:34:42,050 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 451 for LOIs [2024-11-13 23:34:42,253 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 451 for LOIs [2024-11-13 23:34:47,729 INFO L197 IcfgInterpreter]: Interpreting procedure isPersonOnFloor with input of size 454 for LOIs [2024-11-13 23:34:51,733 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedAtCurrentFloor__wrappee__empty with input of size 433 for LOIs [2024-11-13 23:34:53,758 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 58 for LOIs [2024-11-13 23:34:53,793 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 501 for LOIs [2024-11-13 23:34:54,157 INFO L197 IcfgInterpreter]: Interpreting procedure resetCallOnFloor with input of size 459 for LOIs [2024-11-13 23:34:54,387 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:35:14,091 WARN L286 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 569 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:35:28,814 WARN L286 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 571 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:35:34,656 WARN L286 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 571 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:35:40,523 WARN L286 SmtUtils]: Spent 5.55s on a formula simplification that was a NOOP. DAG size: 573 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:35:46,413 WARN L286 SmtUtils]: Spent 5.59s on a formula simplification that was a NOOP. DAG size: 573 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:36:09,444 WARN L286 SmtUtils]: Spent 8.82s on a formula simplification. DAG size of input: 451 DAG size of output: 451 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:36:38,558 WARN L286 SmtUtils]: Spent 9.23s on a formula simplification that was a NOOP. DAG size: 627 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:36:49,409 WARN L286 SmtUtils]: Spent 9.23s on a formula simplification. DAG size of input: 630 DAG size of output: 627 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:37:00,391 WARN L286 SmtUtils]: Spent 9.30s on a formula simplification. DAG size of input: 630 DAG size of output: 627 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:37:15,185 WARN L286 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 454 DAG size of output: 455 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:37:21,826 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 458 DAG size of output: 459 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:37:28,386 WARN L286 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 456 DAG size of output: 457 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:37:34,615 WARN L286 SmtUtils]: Spent 5.05s 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) [2024-11-13 23:37:41,395 WARN L286 SmtUtils]: Spent 5.07s 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) [2024-11-13 23:37:48,185 WARN L286 SmtUtils]: Spent 5.02s 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) [2024-11-13 23:37:55,078 WARN L286 SmtUtils]: Spent 5.03s 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) [2024-11-13 23:38:00,868 WARN L286 SmtUtils]: Spent 5.06s 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) [2024-11-13 23:38:06,652 WARN L286 SmtUtils]: Spent 5.04s 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) [2024-11-13 23:38:56,683 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25592#(and (= 30 (select |#length| 34)) (= ~personOnFloor_3_2~0 |old(~personOnFloor_3_2~0)|) (= (select (select |#memory_int| 23) 0) 32) (= |old(~floorButtons_2~0)| 0) (= 6 (select |#length| 18)) (= 116 (select (select |#memory_int| 7) 2)) (= (select |#valid| 30) 1) (= (select (select |#memory_int| 20) 1) 37) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= ~executiveFloor~0 4) (exists ((|v_timeShift___utac_acc__Specification14_spec__1_~tmp___2~6#1_12| Int)) (and (<= 0 (+ |v_timeShift___utac_acc__Specification14_spec__1_~tmp___2~6#1_12| 2147483648)) (<= |v_timeShift___utac_acc__Specification14_spec__1_~tmp___2~6#1_12| 2147483647) (not (= |v_timeShift___utac_acc__Specification14_spec__1_~tmp___2~6#1_12| 0)))) (= (select |#length| 21) 4) (= (select (select |#memory_int| 21) 1) 37) (<= 1 |#StackHeapBarrier|) (= (select (select |#memory_int| 23) 1) 37) (= (select (select |#memory_int| 20) 3) 0) (= (select (select |#memory_int| 22) 3) 0) (= (select (select |#memory_int| 5) 3) 0) (= |old(~persons_1~0)| 0) (= 4 (select |#length| 16)) (= 3 (select |#length| 10)) (= ~floorButtons_3~0 0) (= ~personOnFloor_5_2~0 |old(~personOnFloor_5_2~0)|) (= ~personOnFloor_5_4~0 |old(~personOnFloor_5_4~0)|) (= (select (select |#memory_int| 22) 0) 32) (= (select (select |#memory_int| 13) 3) 0) (= (select |#valid| 26) 1) (= (select |#length| 4) 10) (= |old(~persons_5~0)| 0) (= |old(~doorState~0)| 1) (= (select |#length| 8) 3) (= (select |#length| 6) 4) (= ~personOnFloor_2_1~0 |old(~personOnFloor_2_1~0)|) (= |old(~persons_2~0)| 0) (= (select (select |#memory_int| 13) 1) 37) (= (select |#valid| 35) 1) (= (select |#valid| 9) 1) (= ~personOnFloor_2_3~0 |old(~personOnFloor_2_3~0)|) (= ~persons_5~0 0) (= 30 (select |#length| 25)) (exists ((|v_stopRequestedAtCurrentFloor__wrappee__empty_#t~ret28#1_18| Int)) (and (<= 0 (+ |v_stopRequestedAtCurrentFloor__wrappee__empty_#t~ret28#1_18| 2147483648)) (not (= |v_stopRequestedAtCurrentFloor__wrappee__empty_#t~ret28#1_18| 0)) (<= |v_stopRequestedAtCurrentFloor__wrappee__empty_#t~ret28#1_18| 2147483647))) (= (select (select |#memory_int| 18) 5) 0) (= (select (select |#memory_int| 20) 0) 32) (= |old(~persons_4~0)| 0) (= ~weight~0 0) (= ~personOnFloor_0_2~0 |old(~personOnFloor_0_2~0)|) (= (select (select |#memory_int| 6) 0) 91) (= |old(~floorButtons_0~0)| 0) (= (select |#valid| 11) 1) (= (select |#length| 9) 10) (= ~personOnFloor_1_1~0 |old(~personOnFloor_1_1~0)|) (= (select |#valid| 27) 1) (= ~personOnFloor_4_4~0 |old(~personOnFloor_4_4~0)|) (= (select (select |#memory_int| 8) 0) 37) (= (select |#valid| 33) 1) (= 73 (select (select |#memory_int| 12) 1)) (= ~personOnFloor_5_1~0 1) (= (select (select |#memory_int| 22) 1) 37) (= ~personOnFloor_2_0~0 |old(~personOnFloor_2_0~0)|) (= (select (select |#memory_int| 23) 2) 105) (= (select (select |#memory_int| 10) 0) 117) (= (select (select |#memory_int| 19) 2) 105) (= (select |#length| 15) 4) (= ~calls_0~0 0) (= (select (select |#memory_int| 19) 1) 37) (= ~head~0.offset 0) (= 7 (select |#length| 12)) (= ~personOnFloor_0_3~0 |old(~personOnFloor_0_3~0)|) (= (select (select |#memory_int| 22) 2) 105) (= |old(~weight~0)| 0) (= 2 (select |#length| 1)) (= ~personOnFloor_3_4~0 |old(~personOnFloor_3_4~0)|) (= ~currentHeading~0 1) (= (select (select |#memory_int| 16) 2) 105) (= (select (select |#memory_int| 17) 2) 105) (= (select |#length| 19) 4) (= ~persons_4~0 0) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= ~floorButtons_4~0 0) (= (select (select |#memory_int| 18) 4) 58) (= (select |#length| 35) 9) (= (select |#valid| 18) 1) (= 91 (select (select |#memory_int| 5) 0)) (= (select |#valid| 22) 1) (= ~personOnFloor_0_1~0 |old(~personOnFloor_0_1~0)|) (= 70 (select (select |#memory_int| 18) 1)) (= 5 (select |#length| 7)) (= ~personOnFloor_4_0~0 |old(~personOnFloor_4_0~0)|) (= (select |#valid| 24) 1) (= (select (select |#memory_int| 19) 3) 0) (= 32 (select (select |#memory_int| 7) 0)) (= ~personOnFloor_1_4~0 |old(~personOnFloor_1_4~0)|) (= (select (select |#memory_int| 17) 3) 0) (= (select (select |#memory_int| 5) 1) 95) (= (select |#valid| 12) 1) (= (select |#valid| 32) 1) (= ~floorButtons_2~0 0) (= ~personOnFloor_5_0~0 |old(~personOnFloor_5_0~0)|) (= 32 (select |#length| 2)) (= (select |#valid| 28) 1) (= (select |#length| 17) 4) (= ~personOnFloor_3_3~0 |old(~personOnFloor_3_3~0)|) (= (select (select |#memory_int| 13) 2) 105) (= 112 (select (select |#memory_int| 12) 4)) (= (select |#valid| 4) 1) (= (select (select |#memory_int| 16) 1) 37) (= (select |#length| 32) 9) (= ~persons_3~0 0) (= (select (select |#memory_int| 20) 2) 105) (= 112 (select (select |#memory_int| 10) 1)) (= (select (select |#memory_int| 8) 2) 0) (= (select (select |#memory_int| 21) 2) 105) (= 0 (select (select |#memory_int| 7) 4)) (= (select |#length| 13) 4) (= 5 (select |#length| 11)) (= |old(~floorButtons_4~0)| 0) (= (select (select |#memory_int| 17) 1) 37) (= (select (select |#memory_int| 6) 1) 93) (= |old(~persons_0~0)| 0) (= (select |#valid| 1) 1) (= (select |#valid| 20) 1) (= (select |#length| 36) 25) (= ~personOnFloor_2_4~0 |old(~personOnFloor_2_4~0)|) (= ~personOnFloor_4_2~0 |old(~personOnFloor_4_2~0)|) (= ~floorButtons_1~0 0) (= (select |#length| 24) 2) (= ~doorState~0 1) (= ~personOnFloor_2_2~0 |old(~personOnFloor_2_2~0)|) (= (select (select |#memory_int| 12) 6) 0) (= (select |#valid| 21) 1) (= (select (select |#memory_int| 11) 0) 100) (= (select (select |#memory_int| 24) 0) 10) (= ~floorButtons_0~0 0) (= 97 (select (select |#memory_int| 7) 1)) (= (select (select |#memory_int| 15) 1) 37) (= (select |#length| 33) 25) (= (select |#length| 5) 4) (= ~currentFloorID~0 0) (= (select |#valid| 14) 1) (= 21 (select |#length| 30)) (= |old(~persons_3~0)| 0) (= ~persons_1~0 0) (= 112 (select (select |#memory_int| 18) 3)) (= (select |#length| 27) 21) (= 119 (select (select |#memory_int| 11) 2)) (= (select |#valid| 0) 0) (= (select (select |#memory_int| 12) 5) 58) (= ~persons_0~0 0) (= (select (select |#memory_int| 16) 0) 32) (= (select |#valid| 25) 1) (= |old(~floorButtons_3~0)| 0) (= ~head~0.base 0) (= (select (select |#memory_int| 14) 3) 0) (= (select (select |#memory_int| 23) 3) 0) (= 95 (select (select |#memory_int| 12) 3)) (= 105 (select (select |#memory_int| 14) 2)) (= (select |#valid| 2) 1) (= (select (select |#memory_int| 14) 1) 37) (= (select |#valid| 36) 1) (= (select (select |#memory_int| 10) 2) 0) (= (select (select |#memory_int| 1) 0) 48) (= (select (select |#memory_int| 11) 1) 111) (= (select |#valid| 23) 1) (= 9 (select |#length| 29)) (= 32 (select (select |#memory_int| 7) 3)) (= ~personOnFloor_5_3~0 |old(~personOnFloor_5_3~0)|) (= 4 (select |#length| 23)) (= |old(~currentHeading~0)| 1) (= (select (select |#memory_int| 24) 1) 0) (= ~personOnFloor_1_3~0 |old(~personOnFloor_1_3~0)|) (= (select |#length| 20) 4) (= (select (select |#memory_int| 21) 3) 0) (= 76 (select (select |#memory_int| 12) 2)) (= (select |#valid| 19) 1) (= ~personOnFloor_3_1~0 |old(~personOnFloor_3_1~0)|) (= |old(~personOnFloor_5_1~0)| 1) (= 1 |old(~calls_1~0)|) (= (select (select |#memory_int| 15) 0) 32) (= ~personOnFloor_1_2~0 |old(~personOnFloor_1_2~0)|) (= 32 (select (select |#memory_int| 13) 0)) (= (select |#valid| 31) 1) (= (select |#valid| 34) 1) (= (select (select |#memory_int| 6) 3) 0) (= ~personOnFloor_0_0~0 |old(~personOnFloor_0_0~0)|) (= ~personOnFloor_4_1~0 |old(~personOnFloor_4_1~0)|) (= (select |#valid| 16) 1) (= (select (select |#memory_int| 15) 2) 105) (= ~personOnFloor_4_3~0 |old(~personOnFloor_4_3~0)|) (= 32 (select (select |#memory_int| 17) 0)) (= ~personOnFloor_3_0~0 |old(~personOnFloor_3_0~0)|) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 15) 3) 0) (= (select (select |#memory_int| 1) 1) 0) (= |old(~floorButtons_1~0)| 0) (= 30 (select |#length| 28)) (= ~personOnFloor_0_4~0 |old(~personOnFloor_0_4~0)|) (= |old(~currentFloorID~0)| 0) (= (select (select |#memory_int| 5) 2) 93) (= (select (select |#memory_int| 14) 0) 32) (= 30 (select |#length| 31)) (= (select |#valid| 29) 1) (= ~maximumWeight~0 100) (= (select (select |#memory_int| 6) 2) 32) (= 32 (select (select |#memory_int| 12) 0)) (= (select |#valid| 17) 1) (= (select (select |#memory_int| 16) 3) 0) (= (select |#valid| 10) 1) (= ~personOnFloor_1_0~0 |old(~personOnFloor_1_0~0)|) (= (select |#valid| 8) 1) (= (select (select |#memory_int| 11) 4) 0) (= 32 (select (select |#memory_int| 19) 0)) (= (select (select |#memory_int| 18) 2) 95) (= 4 (select |#length| 14)) (= (select |#valid| 13) 1) (= ~cleanupTimeShifts~0 12) (= (select |#length| 22) 4) (= 9 (select |#length| 26)) (= 32 (select (select |#memory_int| 18) 0)) (= ~persons_2~0 0) (= (select (select |#memory_int| 8) 1) 105) (= (select (select |#memory_int| 11) 3) 110) (= 32 (select (select |#memory_int| 21) 0)))' at error location [2024-11-13 23:38:56,684 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:38:56,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:38:56,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 18, 18] total 37 [2024-11-13 23:38:56,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247398887] [2024-11-13 23:38:56,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 23:38:56,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-13 23:38:56,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:38:56,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-13 23:38:56,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=767, Invalid=6543, Unknown=0, NotChecked=0, Total=7310 [2024-11-13 23:38:56,689 INFO L87 Difference]: Start difference. First operand 1080 states and 1777 transitions. Second operand has 37 states, 27 states have (on average 6.333333333333333) internal successors, (171), 28 states have internal predecessors, (171), 12 states have call successors, (47), 10 states have call predecessors, (47), 16 states have return successors, (46), 19 states have call predecessors, (46), 12 states have call successors, (46) [2024-11-13 23:39:35,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:39:35,805 INFO L93 Difference]: Finished difference Result 8097 states and 13403 transitions. [2024-11-13 23:39:35,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2024-11-13 23:39:35,806 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 27 states have (on average 6.333333333333333) internal successors, (171), 28 states have internal predecessors, (171), 12 states have call successors, (47), 10 states have call predecessors, (47), 16 states have return successors, (46), 19 states have call predecessors, (46), 12 states have call successors, (46) Word has length 125 [2024-11-13 23:39:35,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:39:35,848 INFO L225 Difference]: With dead ends: 8097 [2024-11-13 23:39:35,848 INFO L226 Difference]: Without dead ends: 6152 [2024-11-13 23:39:35,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 325 SyntacticMatches, 9 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22696 ImplicationChecksByTransitivity, 254.9s TimeCoverageRelationStatistics Valid=5353, Invalid=50579, Unknown=0, NotChecked=0, Total=55932 [2024-11-13 23:39:35,878 INFO L432 NwaCegarLoop]: 637 mSDtfsCounter, 9252 mSDsluCounter, 11080 mSDsCounter, 0 mSdLazyCounter, 28254 mSolverCounterSat, 4442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9477 SdHoareTripleChecker+Valid, 11717 SdHoareTripleChecker+Invalid, 32696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 4442 IncrementalHoareTripleChecker+Valid, 28254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.9s IncrementalHoareTripleChecker+Time [2024-11-13 23:39:35,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9477 Valid, 11717 Invalid, 32696 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [4442 Valid, 28254 Invalid, 0 Unknown, 0 Unchecked, 25.9s Time] [2024-11-13 23:39:35,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6152 states. [2024-11-13 23:39:36,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6152 to 5343. [2024-11-13 23:39:36,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5343 states, 4011 states have (on average 1.6332585390177012) internal successors, (6551), 4170 states have internal predecessors, (6551), 992 states have call successors, (992), 344 states have call predecessors, (992), 339 states have return successors, (1092), 945 states have call predecessors, (1092), 987 states have call successors, (1092) [2024-11-13 23:39:36,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5343 states to 5343 states and 8635 transitions. [2024-11-13 23:39:36,415 INFO L78 Accepts]: Start accepts. Automaton has 5343 states and 8635 transitions. Word has length 125 [2024-11-13 23:39:36,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:39:36,415 INFO L471 AbstractCegarLoop]: Abstraction has 5343 states and 8635 transitions. [2024-11-13 23:39:36,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 27 states have (on average 6.333333333333333) internal successors, (171), 28 states have internal predecessors, (171), 12 states have call successors, (47), 10 states have call predecessors, (47), 16 states have return successors, (46), 19 states have call predecessors, (46), 12 states have call successors, (46) [2024-11-13 23:39:36,416 INFO L276 IsEmpty]: Start isEmpty. Operand 5343 states and 8635 transitions. [2024-11-13 23:39:36,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-13 23:39:36,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:39:36,426 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 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] [2024-11-13 23:39:36,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 23:39:36,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:39:36,630 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:39:36,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:39:36,631 INFO L85 PathProgramCache]: Analyzing trace with hash 2053385243, now seen corresponding path program 1 times [2024-11-13 23:39:36,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:39:36,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907557625] [2024-11-13 23:39:36,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:39:36,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:39:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:39:37,095 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-13 23:39:37,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:39:37,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907557625] [2024-11-13 23:39:37,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907557625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:39:37,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755091994] [2024-11-13 23:39:37,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:39:37,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:39:37,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:39:37,108 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:39:37,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 23:39:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:39:37,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 23:39:37,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:39:37,679 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-13 23:39:37,679 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:39:37,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755091994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:39:37,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:39:37,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-13 23:39:37,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772534897] [2024-11-13 23:39:37,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:39:37,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 23:39:37,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:39:37,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 23:39:37,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-13 23:39:37,681 INFO L87 Difference]: Start difference. First operand 5343 states and 8635 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-13 23:39:38,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:39:38,945 INFO L93 Difference]: Finished difference Result 9876 states and 15937 transitions. [2024-11-13 23:39:38,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 23:39:38,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 130 [2024-11-13 23:39:38,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:39:38,975 INFO L225 Difference]: With dead ends: 9876 [2024-11-13 23:39:38,975 INFO L226 Difference]: Without dead ends: 5072 [2024-11-13 23:39:38,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-13 23:39:38,993 INFO L432 NwaCegarLoop]: 518 mSDtfsCounter, 306 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 23:39:38,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 2016 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 23:39:38,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2024-11-13 23:39:39,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 5036. [2024-11-13 23:39:39,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5036 states, 3814 states have (on average 1.6436811746198217) internal successors, (6269), 3956 states have internal predecessors, (6269), 901 states have call successors, (901), 326 states have call predecessors, (901), 320 states have return successors, (970), 859 states have call predecessors, (970), 896 states have call successors, (970) [2024-11-13 23:39:39,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5036 states to 5036 states and 8140 transitions. [2024-11-13 23:39:39,442 INFO L78 Accepts]: Start accepts. Automaton has 5036 states and 8140 transitions. Word has length 130 [2024-11-13 23:39:39,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:39:39,443 INFO L471 AbstractCegarLoop]: Abstraction has 5036 states and 8140 transitions. [2024-11-13 23:39:39,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-13 23:39:39,443 INFO L276 IsEmpty]: Start isEmpty. Operand 5036 states and 8140 transitions. [2024-11-13 23:39:39,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-13 23:39:39,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:39:39,462 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:39:39,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 23:39:39,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:39:39,663 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:39:39,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:39:39,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1872695822, now seen corresponding path program 1 times [2024-11-13 23:39:39,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:39:39,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436428312] [2024-11-13 23:39:39,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:39:39,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:39:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:39:40,554 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-13 23:39:40,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:39:40,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436428312] [2024-11-13 23:39:40,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436428312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:39:40,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570367317] [2024-11-13 23:39:40,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:39:40,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:39:40,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:39:40,557 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:39:40,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae025814-88da-4d08-b69c-77302b1fd9d3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 23:39:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:39:41,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 23:39:41,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:39:41,327 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 63 proven. 10 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-13 23:39:41,327 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:39:41,761 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-13 23:39:41,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570367317] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:39:41,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [464463324] [2024-11-13 23:39:41,766 INFO L159 IcfgInterpreter]: Started Sifa with 113 locations of interest [2024-11-13 23:39:41,766 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:39:41,767 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:39:41,767 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:39:41,767 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:39:53,571 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 589 for LOIs [2024-11-13 23:40:05,775 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 34 for LOIs [2024-11-13 23:40:06,051 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 1 for LOIs [2024-11-13 23:40:06,069 INFO L197 IcfgInterpreter]: Interpreting procedure isPersonOnFloor with input of size 61 for LOIs [2024-11-13 23:40:06,417 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedAtCurrentFloor__wrappee__empty with input of size 30 for LOIs [2024-11-13 23:40:06,454 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 34 for LOIs [2024-11-13 23:40:06,476 INFO L197 IcfgInterpreter]: Interpreting procedure resetCallOnFloor with input of size 66 for LOIs [2024-11-13 23:40:06,518 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 18 for LOIs [2024-11-13 23:40:06,520 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 569 for LOIs [2024-11-13 23:40:15,443 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 573 for LOIs [2024-11-13 23:40:16,120 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 58 for LOIs [2024-11-13 23:40:16,179 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 40 for LOIs [2024-11-13 23:40:16,186 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 501 for LOIs [2024-11-13 23:40:16,539 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:40:31,506 WARN L286 SmtUtils]: Spent 5.61s on a formula simplification that was a NOOP. DAG size: 569 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:40:46,582 WARN L286 SmtUtils]: Spent 5.65s on a formula simplification that was a NOOP. DAG size: 571 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:40:52,491 WARN L286 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 571 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:40:58,408 WARN L286 SmtUtils]: Spent 5.65s on a formula simplification that was a NOOP. DAG size: 573 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:41:04,386 WARN L286 SmtUtils]: Spent 5.72s on a formula simplification that was a NOOP. DAG size: 573 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)