./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product23.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_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/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_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/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_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/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 ef17cfb4a2c8358ea255253edc0610051a64c94a86cd92ff89d3b074c51925f6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:12:09,494 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:12:09,577 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:12:09,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:12:09,587 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:12:09,639 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:12:09,642 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:12:09,643 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:12:09,644 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:12:09,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:12:09,645 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:12:09,645 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:12:09,645 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:12:09,646 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:12:09,646 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:12:09,646 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:12:09,646 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:12:09,648 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:12:09,648 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:12:09,648 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:12:09,649 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:12:09,649 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:12:09,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:12:09,649 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:12:09,650 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:12:09,650 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:12:09,650 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:12:09,650 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:12:09,650 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:12:09,650 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:12:09,650 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:12:09,650 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:12:09,650 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:12:09,650 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:12:09,650 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:12:09,651 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:12:09,651 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:12:09,651 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:12:09,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:12:09,651 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:12:09,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:12:09,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:12:09,652 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:12:09,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:12:09,652 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:12:09,652 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:12:09,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:12:09,652 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_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/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 -> ef17cfb4a2c8358ea255253edc0610051a64c94a86cd92ff89d3b074c51925f6 [2024-11-14 03:12:10,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:12:10,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:12:10,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:12:10,083 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:12:10,084 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:12:10,085 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c Unable to find full path for "g++" [2024-11-14 03:12:12,116 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:12:12,599 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:12:12,600 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c [2024-11-14 03:12:12,637 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/data/6ca5b8555/430e389a3ae740469f4ab9d08a7680cb/FLAGece2466a7 [2024-11-14 03:12:12,653 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/data/6ca5b8555/430e389a3ae740469f4ab9d08a7680cb [2024-11-14 03:12:12,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:12:12,658 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:12:12,660 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:12:12,660 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:12:12,666 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:12:12,667 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:12:12" (1/1) ... [2024-11-14 03:12:12,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d01d377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:12:12, skipping insertion in model container [2024-11-14 03:12:12,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:12:12" (1/1) ... [2024-11-14 03:12:12,732 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:12:12,959 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_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c[1811,1824] [2024-11-14 03:12:13,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:12:13,551 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:12:13,569 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2024-11-14 03:12:13,571 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [68] [2024-11-14 03:12:13,571 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [77] [2024-11-14 03:12:13,571 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [171] [2024-11-14 03:12:13,572 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [270] [2024-11-14 03:12:13,573 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1873] [2024-11-14 03:12:13,573 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1991] [2024-11-14 03:12:13,574 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2342] [2024-11-14 03:12:13,574 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2708] [2024-11-14 03:12:13,577 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2743] [2024-11-14 03:12:13,582 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_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c[1811,1824] [2024-11-14 03:12:13,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:12:13,833 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:12:13,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:12:13 WrapperNode [2024-11-14 03:12:13,834 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:12:13,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:12:13,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:12:13,836 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:12:13,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:12:13" (1/1) ... [2024-11-14 03:12:13,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:12:13" (1/1) ... [2024-11-14 03:12:13,961 INFO L138 Inliner]: procedures = 94, calls = 346, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 871 [2024-11-14 03:12:13,961 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:12:13,962 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:12:13,962 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:12:13,962 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:12:13,976 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:12:13" (1/1) ... [2024-11-14 03:12:13,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:12:13" (1/1) ... [2024-11-14 03:12:13,997 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:12:13" (1/1) ... [2024-11-14 03:12:13,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:12:13" (1/1) ... [2024-11-14 03:12:14,048 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:12:13" (1/1) ... [2024-11-14 03:12:14,069 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:12:13" (1/1) ... [2024-11-14 03:12:14,077 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:12:13" (1/1) ... [2024-11-14 03:12:14,082 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:12:13" (1/1) ... [2024-11-14 03:12:14,091 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:12:14,092 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:12:14,092 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:12:14,093 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:12:14,094 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:12:13" (1/1) ... [2024-11-14 03:12:14,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:12:14,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:12:14,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:12:14,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:12:14,204 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-14 03:12:14,209 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-14 03:12:14,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:12:14,209 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-14 03:12:14,209 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-14 03:12:14,210 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-14 03:12:14,210 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-14 03:12:14,210 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-14 03:12:14,210 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-14 03:12:14,210 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2024-11-14 03:12:14,210 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2024-11-14 03:12:14,210 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-14 03:12:14,211 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-14 03:12:14,213 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-14 03:12:14,213 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-14 03:12:14,213 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-14 03:12:14,213 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-14 03:12:14,213 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-14 03:12:14,213 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-14 03:12:14,213 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-14 03:12:14,214 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-14 03:12:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-14 03:12:14,214 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-14 03:12:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-14 03:12:14,214 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-14 03:12:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-14 03:12:14,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-14 03:12:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-14 03:12:14,214 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-14 03:12:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-14 03:12:14,214 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-14 03:12:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-14 03:12:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-14 03:12:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-14 03:12:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-14 03:12:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-14 03:12:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-14 03:12:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-14 03:12:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-14 03:12:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-14 03:12:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-14 03:12:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-14 03:12:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-14 03:12:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-14 03:12:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-14 03:12:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:12:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-14 03:12:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-14 03:12:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-14 03:12:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-14 03:12:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-14 03:12:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-14 03:12:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-14 03:12:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-14 03:12:14,221 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-11-14 03:12:14,221 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-11-14 03:12:14,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:12:14,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:12:14,221 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-14 03:12:14,221 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-14 03:12:14,477 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:12:14,481 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:12:16,678 INFO L? ?]: Removed 482 outVars from TransFormulas that were not future-live. [2024-11-14 03:12:16,679 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:12:17,849 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:12:17,849 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-14 03:12:17,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:12:17 BoogieIcfgContainer [2024-11-14 03:12:17,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:12:17,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:12:17,853 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:12:17,859 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:12:17,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:12:12" (1/3) ... [2024-11-14 03:12:17,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c6a69b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:12:17, skipping insertion in model container [2024-11-14 03:12:17,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:12:13" (2/3) ... [2024-11-14 03:12:17,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c6a69b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:12:17, skipping insertion in model container [2024-11-14 03:12:17,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:12:17" (3/3) ... [2024-11-14 03:12:17,862 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product23.cil.c [2024-11-14 03:12:17,884 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:12:17,888 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec13_product23.cil.c that has 29 procedures, 436 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-14 03:12:18,013 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:12:18,036 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;@f2844c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:12:18,037 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:12:18,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 436 states, 298 states have (on average 1.5771812080536913) internal successors, (470), 316 states have internal predecessors, (470), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) [2024-11-14 03:12:18,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-14 03:12:18,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:12:18,079 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 03:12:18,080 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:12:18,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:12:18,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1759036429, now seen corresponding path program 1 times [2024-11-14 03:12:18,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:12:18,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719631149] [2024-11-14 03:12:18,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:18,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:12:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:19,754 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-14 03:12:19,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:12:19,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719631149] [2024-11-14 03:12:19,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719631149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:12:19,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:12:19,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:12:19,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497045784] [2024-11-14 03:12:19,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:12:19,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:12:19,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:12:19,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:12:19,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:12:19,807 INFO L87 Difference]: Start difference. First operand has 436 states, 298 states have (on average 1.5771812080536913) internal successors, (470), 316 states have internal predecessors, (470), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-14 03:12:21,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:12:21,306 INFO L93 Difference]: Finished difference Result 1276 states and 2046 transitions. [2024-11-14 03:12:21,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:12:21,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 96 [2024-11-14 03:12:21,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:12:21,348 INFO L225 Difference]: With dead ends: 1276 [2024-11-14 03:12:21,349 INFO L226 Difference]: Without dead ends: 845 [2024-11-14 03:12:21,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:12:21,372 INFO L432 NwaCegarLoop]: 799 mSDtfsCounter, 650 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:12:21,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 2801 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 03:12:21,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2024-11-14 03:12:21,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 837. [2024-11-14 03:12:21,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 579 states have (on average 1.5613126079447324) internal successors, (904), 609 states have internal predecessors, (904), 206 states have call successors, (206), 54 states have call predecessors, (206), 51 states have return successors, (210), 198 states have call predecessors, (210), 202 states have call successors, (210) [2024-11-14 03:12:21,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1320 transitions. [2024-11-14 03:12:21,587 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1320 transitions. Word has length 96 [2024-11-14 03:12:21,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:12:21,588 INFO L471 AbstractCegarLoop]: Abstraction has 837 states and 1320 transitions. [2024-11-14 03:12:21,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-14 03:12:21,589 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1320 transitions. [2024-11-14 03:12:21,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-14 03:12:21,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:12:21,598 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 03:12:21,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:12:21,599 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:12:21,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:12:21,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1614347761, now seen corresponding path program 1 times [2024-11-14 03:12:21,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:12:21,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767948724] [2024-11-14 03:12:21,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:21,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:12:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:22,149 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 03:12:22,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:12:22,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767948724] [2024-11-14 03:12:22,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767948724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:12:22,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732620999] [2024-11-14 03:12:22,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:22,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:22,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:12:22,156 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:12:22,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:12:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:22,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:12:22,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:22,904 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 03:12:22,904 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:12:22,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732620999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:12:22,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:12:22,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-14 03:12:22,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729650287] [2024-11-14 03:12:22,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:12:22,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:12:22,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:12:22,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:12:22,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:12:22,914 INFO L87 Difference]: Start difference. First operand 837 states and 1320 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-14 03:12:23,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:12:23,353 INFO L93 Difference]: Finished difference Result 1671 states and 2655 transitions. [2024-11-14 03:12:23,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:12:23,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 100 [2024-11-14 03:12:23,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:12:23,367 INFO L225 Difference]: With dead ends: 1671 [2024-11-14 03:12:23,367 INFO L226 Difference]: Without dead ends: 849 [2024-11-14 03:12:23,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:12:23,375 INFO L432 NwaCegarLoop]: 628 mSDtfsCounter, 26 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:12:23,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1850 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:12:23,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2024-11-14 03:12:23,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2024-11-14 03:12:23,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 589 states have (on average 1.5551782682512734) internal successors, (916), 619 states have internal predecessors, (916), 206 states have call successors, (206), 56 states have call predecessors, (206), 53 states have return successors, (210), 198 states have call predecessors, (210), 202 states have call successors, (210) [2024-11-14 03:12:23,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1332 transitions. [2024-11-14 03:12:23,499 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1332 transitions. Word has length 100 [2024-11-14 03:12:23,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:12:23,502 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1332 transitions. [2024-11-14 03:12:23,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-14 03:12:23,503 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1332 transitions. [2024-11-14 03:12:23,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-14 03:12:23,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:12:23,515 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 03:12:23,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 03:12:23,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:23,717 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:12:23,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:12:23,717 INFO L85 PathProgramCache]: Analyzing trace with hash 346556740, now seen corresponding path program 1 times [2024-11-14 03:12:23,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:12:23,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299339504] [2024-11-14 03:12:23,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:23,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:12:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:24,279 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 03:12:24,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:12:24,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299339504] [2024-11-14 03:12:24,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299339504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:12:24,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038473272] [2024-11-14 03:12:24,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:24,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:24,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:12:24,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:12:24,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:12:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:24,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:12:24,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:24,993 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 03:12:24,994 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:12:24,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038473272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:12:24,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:12:24,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-14 03:12:24,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596961575] [2024-11-14 03:12:24,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:12:24,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:12:24,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:12:24,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:12:24,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:12:24,997 INFO L87 Difference]: Start difference. First operand 849 states and 1332 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-14 03:12:25,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:12:25,316 INFO L93 Difference]: Finished difference Result 1689 states and 2665 transitions. [2024-11-14 03:12:25,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:12:25,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 102 [2024-11-14 03:12:25,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:12:25,325 INFO L225 Difference]: With dead ends: 1689 [2024-11-14 03:12:25,326 INFO L226 Difference]: Without dead ends: 847 [2024-11-14 03:12:25,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:12:25,333 INFO L432 NwaCegarLoop]: 627 mSDtfsCounter, 32 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:12:25,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1846 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:12:25,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2024-11-14 03:12:25,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2024-11-14 03:12:25,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 587 states have (on average 1.546848381601363) internal successors, (908), 617 states have internal predecessors, (908), 206 states have call successors, (206), 56 states have call predecessors, (206), 53 states have return successors, (210), 198 states have call predecessors, (210), 202 states have call successors, (210) [2024-11-14 03:12:25,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1324 transitions. [2024-11-14 03:12:25,439 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1324 transitions. Word has length 102 [2024-11-14 03:12:25,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:12:25,440 INFO L471 AbstractCegarLoop]: Abstraction has 847 states and 1324 transitions. [2024-11-14 03:12:25,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-14 03:12:25,441 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1324 transitions. [2024-11-14 03:12:25,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-14 03:12:25,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:12:25,452 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 03:12:25,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 03:12:25,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:25,653 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:12:25,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:12:25,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1366439838, now seen corresponding path program 1 times [2024-11-14 03:12:25,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:12:25,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137655687] [2024-11-14 03:12:25,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:25,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:12:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:26,095 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 03:12:26,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:12:26,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137655687] [2024-11-14 03:12:26,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137655687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:12:26,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276361287] [2024-11-14 03:12:26,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:26,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:26,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:12:26,101 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:12:26,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 03:12:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:26,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:12:26,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 03:12:26,801 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:12:26,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276361287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:12:26,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:12:26,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-14 03:12:26,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785849332] [2024-11-14 03:12:26,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:12:26,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:12:26,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:12:26,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:12:26,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:12:26,808 INFO L87 Difference]: Start difference. First operand 847 states and 1324 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-14 03:12:28,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:12:28,530 INFO L93 Difference]: Finished difference Result 2069 states and 3278 transitions. [2024-11-14 03:12:28,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:12:28,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 103 [2024-11-14 03:12:28,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:12:28,548 INFO L225 Difference]: With dead ends: 2069 [2024-11-14 03:12:28,548 INFO L226 Difference]: Without dead ends: 1237 [2024-11-14 03:12:28,555 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:12:28,556 INFO L432 NwaCegarLoop]: 699 mSDtfsCounter, 647 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:12:28,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 1972 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 03:12:28,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2024-11-14 03:12:28,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1216. [2024-11-14 03:12:28,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 841 states have (on average 1.49346016646849) internal successors, (1256), 886 states have internal predecessors, (1256), 294 states have call successors, (294), 84 states have call predecessors, (294), 80 states have return successors, (322), 282 states have call predecessors, (322), 289 states have call successors, (322) [2024-11-14 03:12:28,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1872 transitions. [2024-11-14 03:12:28,696 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1872 transitions. Word has length 103 [2024-11-14 03:12:28,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:12:28,699 INFO L471 AbstractCegarLoop]: Abstraction has 1216 states and 1872 transitions. [2024-11-14 03:12:28,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-14 03:12:28,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1872 transitions. [2024-11-14 03:12:28,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-14 03:12:28,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:12:28,704 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 03:12:28,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 03:12:28,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:28,909 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:12:28,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:12:28,910 INFO L85 PathProgramCache]: Analyzing trace with hash 630812645, now seen corresponding path program 1 times [2024-11-14 03:12:28,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:12:28,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643695912] [2024-11-14 03:12:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:28,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:12:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 03:12:29,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:12:29,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643695912] [2024-11-14 03:12:29,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643695912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:12:29,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294439008] [2024-11-14 03:12:29,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:29,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:29,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:12:29,346 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:12:29,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 03:12:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:29,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:12:29,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:30,030 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 03:12:30,030 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:12:30,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294439008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:12:30,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:12:30,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-14 03:12:30,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170471070] [2024-11-14 03:12:30,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:12:30,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:12:30,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:12:30,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:12:30,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-14 03:12:30,032 INFO L87 Difference]: Start difference. First operand 1216 states and 1872 transitions. Second operand has 6 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-14 03:12:31,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:12:31,326 INFO L93 Difference]: Finished difference Result 2641 states and 4063 transitions. [2024-11-14 03:12:31,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 03:12:31,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 104 [2024-11-14 03:12:31,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:12:31,344 INFO L225 Difference]: With dead ends: 2641 [2024-11-14 03:12:31,344 INFO L226 Difference]: Without dead ends: 1440 [2024-11-14 03:12:31,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-14 03:12:31,356 INFO L432 NwaCegarLoop]: 831 mSDtfsCounter, 771 mSDsluCounter, 2739 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 3570 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:12:31,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 3570 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 03:12:31,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2024-11-14 03:12:31,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1421. [2024-11-14 03:12:31,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 999 states have (on average 1.4804804804804805) internal successors, (1479), 1042 states have internal predecessors, (1479), 318 states have call successors, (318), 108 states have call predecessors, (318), 103 states have return successors, (373), 307 states have call predecessors, (373), 311 states have call successors, (373) [2024-11-14 03:12:31,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 2170 transitions. [2024-11-14 03:12:31,529 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 2170 transitions. Word has length 104 [2024-11-14 03:12:31,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:12:31,531 INFO L471 AbstractCegarLoop]: Abstraction has 1421 states and 2170 transitions. [2024-11-14 03:12:31,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-14 03:12:31,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 2170 transitions. [2024-11-14 03:12:31,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-14 03:12:31,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:12:31,535 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 03:12:31,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 03:12:31,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:31,740 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:12:31,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:12:31,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1311954522, now seen corresponding path program 1 times [2024-11-14 03:12:31,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:12:31,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892595376] [2024-11-14 03:12:31,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:31,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:12:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 03:12:32,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:12:32,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892595376] [2024-11-14 03:12:32,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892595376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:12:32,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699443570] [2024-11-14 03:12:32,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:32,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:32,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:12:32,057 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:12:32,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 03:12:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:32,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:12:32,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:32,523 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 03:12:32,523 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:12:32,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699443570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:12:32,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:12:32,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-14 03:12:32,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371708415] [2024-11-14 03:12:32,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:12:32,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:12:32,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:12:32,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:12:32,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:12:32,525 INFO L87 Difference]: Start difference. First operand 1421 states and 2170 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-14 03:12:32,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:12:32,835 INFO L93 Difference]: Finished difference Result 2841 states and 4380 transitions. [2024-11-14 03:12:32,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:12:32,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 104 [2024-11-14 03:12:32,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:12:32,848 INFO L225 Difference]: With dead ends: 2841 [2024-11-14 03:12:32,848 INFO L226 Difference]: Without dead ends: 1443 [2024-11-14 03:12:32,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:12:32,859 INFO L432 NwaCegarLoop]: 635 mSDtfsCounter, 0 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:12:32,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2525 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:12:32,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2024-11-14 03:12:32,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1433. [2024-11-14 03:12:32,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1008 states have (on average 1.4761904761904763) internal successors, (1488), 1051 states have internal predecessors, (1488), 318 states have call successors, (318), 108 states have call predecessors, (318), 106 states have return successors, (376), 310 states have call predecessors, (376), 311 states have call successors, (376) [2024-11-14 03:12:33,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2182 transitions. [2024-11-14 03:12:33,007 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2182 transitions. Word has length 104 [2024-11-14 03:12:33,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:12:33,008 INFO L471 AbstractCegarLoop]: Abstraction has 1433 states and 2182 transitions. [2024-11-14 03:12:33,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-14 03:12:33,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2182 transitions. [2024-11-14 03:12:33,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-14 03:12:33,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:12:33,013 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 03:12:33,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 03:12:33,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-14 03:12:33,214 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:12:33,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:12:33,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1161731030, now seen corresponding path program 1 times [2024-11-14 03:12:33,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:12:33,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772629039] [2024-11-14 03:12:33,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:33,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:12:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 03:12:33,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:12:33,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772629039] [2024-11-14 03:12:33,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772629039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:12:33,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930992926] [2024-11-14 03:12:33,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:33,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:33,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:12:33,478 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:12:33,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 03:12:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:33,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:12:33,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:34,018 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 03:12:34,019 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:12:34,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930992926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:12:34,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:12:34,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-14 03:12:34,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760439571] [2024-11-14 03:12:34,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:12:34,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:12:34,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:12:34,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:12:34,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:12:34,021 INFO L87 Difference]: Start difference. First operand 1433 states and 2182 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-14 03:12:34,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:12:34,451 INFO L93 Difference]: Finished difference Result 2918 states and 4514 transitions. [2024-11-14 03:12:34,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:12:34,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 106 [2024-11-14 03:12:34,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:12:34,484 INFO L225 Difference]: With dead ends: 2918 [2024-11-14 03:12:34,484 INFO L226 Difference]: Without dead ends: 1509 [2024-11-14 03:12:34,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:12:34,495 INFO L432 NwaCegarLoop]: 623 mSDtfsCounter, 16 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:12:34,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1744 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:12:34,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2024-11-14 03:12:34,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1494. [2024-11-14 03:12:34,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1069 states have (on average 1.4845650140318054) internal successors, (1587), 1112 states have internal predecessors, (1587), 318 states have call successors, (318), 108 states have call predecessors, (318), 106 states have return successors, (376), 310 states have call predecessors, (376), 311 states have call successors, (376) [2024-11-14 03:12:34,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 2281 transitions. [2024-11-14 03:12:34,591 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 2281 transitions. Word has length 106 [2024-11-14 03:12:34,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:12:34,592 INFO L471 AbstractCegarLoop]: Abstraction has 1494 states and 2281 transitions. [2024-11-14 03:12:34,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-14 03:12:34,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 2281 transitions. [2024-11-14 03:12:34,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-14 03:12:34,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:12:34,596 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 03:12:34,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 03:12:34,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:34,800 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:12:34,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:12:34,800 INFO L85 PathProgramCache]: Analyzing trace with hash 374583564, now seen corresponding path program 1 times [2024-11-14 03:12:34,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:12:34,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154157840] [2024-11-14 03:12:34,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:34,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:12:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:35,025 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 03:12:35,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:12:35,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154157840] [2024-11-14 03:12:35,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154157840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:12:35,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567482746] [2024-11-14 03:12:35,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:35,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:35,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:12:35,028 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:12:35,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 03:12:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:35,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:12:35,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:35,523 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 03:12:35,523 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:12:35,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567482746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:12:35,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:12:35,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-14 03:12:35,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613841744] [2024-11-14 03:12:35,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:12:35,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:12:35,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:12:35,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:12:35,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:12:35,525 INFO L87 Difference]: Start difference. First operand 1494 states and 2281 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-14 03:12:37,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:12:37,000 INFO L93 Difference]: Finished difference Result 3564 states and 5648 transitions. [2024-11-14 03:12:37,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:12:37,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 108 [2024-11-14 03:12:37,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:12:37,021 INFO L225 Difference]: With dead ends: 3564 [2024-11-14 03:12:37,021 INFO L226 Difference]: Without dead ends: 2507 [2024-11-14 03:12:37,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:12:37,031 INFO L432 NwaCegarLoop]: 724 mSDtfsCounter, 660 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 2022 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:12:37,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 2022 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 03:12:37,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2024-11-14 03:12:37,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2462. [2024-11-14 03:12:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 1763 states have (on average 1.4781622234826999) internal successors, (2606), 1832 states have internal predecessors, (2606), 520 states have call successors, (520), 180 states have call predecessors, (520), 178 states have return successors, (739), 510 states have call predecessors, (739), 509 states have call successors, (739) [2024-11-14 03:12:37,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 3865 transitions. [2024-11-14 03:12:37,223 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 3865 transitions. Word has length 108 [2024-11-14 03:12:37,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:12:37,225 INFO L471 AbstractCegarLoop]: Abstraction has 2462 states and 3865 transitions. [2024-11-14 03:12:37,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-14 03:12:37,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 3865 transitions. [2024-11-14 03:12:37,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-14 03:12:37,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:12:37,229 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 03:12:37,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 03:12:37,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:37,430 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:12:37,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:12:37,431 INFO L85 PathProgramCache]: Analyzing trace with hash -712963818, now seen corresponding path program 1 times [2024-11-14 03:12:37,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:12:37,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580811524] [2024-11-14 03:12:37,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:37,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:12:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:37,680 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 03:12:37,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:12:37,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580811524] [2024-11-14 03:12:37,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580811524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:12:37,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556631639] [2024-11-14 03:12:37,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:37,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:37,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:12:37,683 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:12:37,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 03:12:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:38,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:12:38,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:38,209 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 03:12:38,211 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:12:38,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556631639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:12:38,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:12:38,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-14 03:12:38,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876446861] [2024-11-14 03:12:38,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:12:38,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:12:38,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:12:38,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:12:38,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:12:38,216 INFO L87 Difference]: Start difference. First operand 2462 states and 3865 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-14 03:12:38,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:12:38,597 INFO L93 Difference]: Finished difference Result 4968 states and 7962 transitions. [2024-11-14 03:12:38,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:12:38,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 108 [2024-11-14 03:12:38,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:12:38,621 INFO L225 Difference]: With dead ends: 4968 [2024-11-14 03:12:38,622 INFO L226 Difference]: Without dead ends: 2530 [2024-11-14 03:12:38,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:12:38,643 INFO L432 NwaCegarLoop]: 637 mSDtfsCounter, 4 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:12:38,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1873 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:12:38,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2024-11-14 03:12:38,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2476. [2024-11-14 03:12:38,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 1777 states have (on average 1.4642656162070906) internal successors, (2602), 1846 states have internal predecessors, (2602), 520 states have call successors, (520), 180 states have call predecessors, (520), 178 states have return successors, (737), 510 states have call predecessors, (737), 509 states have call successors, (737) [2024-11-14 03:12:38,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 3859 transitions. [2024-11-14 03:12:38,863 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 3859 transitions. Word has length 108 [2024-11-14 03:12:38,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:12:38,865 INFO L471 AbstractCegarLoop]: Abstraction has 2476 states and 3859 transitions. [2024-11-14 03:12:38,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-14 03:12:38,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 3859 transitions. [2024-11-14 03:12:38,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-14 03:12:38,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:12:38,871 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 03:12:38,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-14 03:12:39,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:39,076 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:12:39,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:12:39,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1514299356, now seen corresponding path program 1 times [2024-11-14 03:12:39,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:12:39,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474326121] [2024-11-14 03:12:39,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:39,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:12:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 03:12:39,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:12:39,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474326121] [2024-11-14 03:12:39,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474326121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:12:39,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293316705] [2024-11-14 03:12:39,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:39,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:39,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:12:39,381 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:12:39,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 03:12:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:39,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 1328 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:12:39,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 03:12:39,968 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:12:39,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293316705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:12:39,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:12:39,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-14 03:12:39,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411395053] [2024-11-14 03:12:39,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:12:39,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:12:39,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:12:39,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:12:39,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:12:39,972 INFO L87 Difference]: Start difference. First operand 2476 states and 3859 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-14 03:12:41,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:12:41,567 INFO L93 Difference]: Finished difference Result 5527 states and 8868 transitions. [2024-11-14 03:12:41,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:12:41,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 109 [2024-11-14 03:12:41,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:12:41,605 INFO L225 Difference]: With dead ends: 5527 [2024-11-14 03:12:41,606 INFO L226 Difference]: Without dead ends: 3493 [2024-11-14 03:12:41,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:12:41,705 INFO L432 NwaCegarLoop]: 729 mSDtfsCounter, 679 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:12:41,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 2027 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 03:12:41,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3493 states. [2024-11-14 03:12:41,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3493 to 3444. [2024-11-14 03:12:41,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3444 states, 2471 states have (on average 1.462161068393363) internal successors, (3613), 2566 states have internal predecessors, (3613), 722 states have call successors, (722), 252 states have call predecessors, (722), 250 states have return successors, (1171), 710 states have call predecessors, (1171), 707 states have call successors, (1171) [2024-11-14 03:12:41,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3444 states to 3444 states and 5506 transitions. [2024-11-14 03:12:41,993 INFO L78 Accepts]: Start accepts. Automaton has 3444 states and 5506 transitions. Word has length 109 [2024-11-14 03:12:41,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:12:41,993 INFO L471 AbstractCegarLoop]: Abstraction has 3444 states and 5506 transitions. [2024-11-14 03:12:41,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-14 03:12:41,994 INFO L276 IsEmpty]: Start isEmpty. Operand 3444 states and 5506 transitions. [2024-11-14 03:12:42,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-14 03:12:42,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:12:42,002 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 03:12:42,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 03:12:42,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-14 03:12:42,207 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:12:42,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:12:42,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1154145858, now seen corresponding path program 1 times [2024-11-14 03:12:42,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:12:42,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581672546] [2024-11-14 03:12:42,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:42,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:12:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:42,483 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 03:12:42,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:12:42,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581672546] [2024-11-14 03:12:42,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581672546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:12:42,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307081035] [2024-11-14 03:12:42,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:42,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:42,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:12:42,487 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:12:42,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 03:12:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:42,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:12:42,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:43,058 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 03:12:43,061 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:12:43,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307081035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:12:43,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:12:43,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-14 03:12:43,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880382068] [2024-11-14 03:12:43,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:12:43,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:12:43,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:12:43,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:12:43,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:12:43,064 INFO L87 Difference]: Start difference. First operand 3444 states and 5506 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-14 03:12:44,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:12:44,751 INFO L93 Difference]: Finished difference Result 7369 states and 12029 transitions. [2024-11-14 03:12:44,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:12:44,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 110 [2024-11-14 03:12:44,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:12:44,804 INFO L225 Difference]: With dead ends: 7369 [2024-11-14 03:12:44,804 INFO L226 Difference]: Without dead ends: 4370 [2024-11-14 03:12:44,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:12:44,833 INFO L432 NwaCegarLoop]: 734 mSDtfsCounter, 700 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 2036 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:12:44,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 2036 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 03:12:44,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4370 states. [2024-11-14 03:12:45,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4370 to 4237. [2024-11-14 03:12:45,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4237 states, 3011 states have (on average 1.4613085353703088) internal successors, (4400), 3130 states have internal predecessors, (4400), 913 states have call successors, (913), 317 states have call predecessors, (913), 312 states have return successors, (1586), 898 states have call predecessors, (1586), 895 states have call successors, (1586) [2024-11-14 03:12:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4237 states to 4237 states and 6899 transitions. [2024-11-14 03:12:45,297 INFO L78 Accepts]: Start accepts. Automaton has 4237 states and 6899 transitions. Word has length 110 [2024-11-14 03:12:45,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:12:45,301 INFO L471 AbstractCegarLoop]: Abstraction has 4237 states and 6899 transitions. [2024-11-14 03:12:45,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-14 03:12:45,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4237 states and 6899 transitions. [2024-11-14 03:12:45,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-14 03:12:45,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:12:45,312 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 03:12:45,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-14 03:12:45,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:45,513 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:12:45,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:12:45,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1922406344, now seen corresponding path program 1 times [2024-11-14 03:12:45,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:12:45,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299264802] [2024-11-14 03:12:45,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:45,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:12:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-14 03:12:45,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:12:45,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299264802] [2024-11-14 03:12:45,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299264802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:12:45,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90785378] [2024-11-14 03:12:45,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:45,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:45,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:12:45,781 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:12:45,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 03:12:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:46,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:12:46,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:46,377 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 03:12:46,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:12:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 03:12:46,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90785378] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:12:46,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [992710282] [2024-11-14 03:12:46,708 INFO L159 IcfgInterpreter]: Started Sifa with 91 locations of interest [2024-11-14 03:12:46,708 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:12:46,712 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:12:46,717 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:12:46,717 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:13:03,678 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 570 for LOIs [2024-11-14 03:13:25,519 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 451 for LOIs [2024-11-14 03:13:31,727 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 452 for LOIs [2024-11-14 03:13:37,617 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 454 for LOIs [2024-11-14 03:13:38,520 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 460 for LOIs [2024-11-14 03:13:39,554 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 459 for LOIs [2024-11-14 03:13:42,503 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 455 for LOIs [2024-11-14 03:13:42,768 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 435 for LOIs [2024-11-14 03:13:43,017 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 538 for LOIs [2024-11-14 03:13:51,210 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 620 for LOIs [2024-11-14 03:13:54,476 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 512 for LOIs [2024-11-14 03:13:55,778 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:14:01,115 WARN L286 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 503 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:14:06,478 WARN L286 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 501 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:14:12,997 WARN L286 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 512 DAG size of output: 509 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:14:22,731 WARN L286 SmtUtils]: Spent 9.18s on a formula simplification. DAG size of input: 546 DAG size of output: 516 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:14:48,825 WARN L286 SmtUtils]: Spent 15.50s on a formula simplification. DAG size of input: 620 DAG size of output: 584 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:15:09,305 WARN L286 SmtUtils]: Spent 19.20s on a formula simplification. DAG size of input: 864 DAG size of output: 666 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:15:22,703 WARN L286 SmtUtils]: Spent 5.13s on a formula simplification that was a NOOP. DAG size: 538 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:15:32,827 WARN L286 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 540 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:15:46,137 WARN L286 SmtUtils]: Spent 5.76s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:15:55,075 WARN L286 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 572 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:16:00,370 WARN L286 SmtUtils]: Spent 5.02s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:16:10,899 WARN L286 SmtUtils]: Spent 9.52s on a formula simplification. DAG size of input: 452 DAG size of output: 452 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:16:21,557 WARN L286 SmtUtils]: Spent 9.62s on a formula simplification. DAG size of input: 454 DAG size of output: 454 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:16:38,220 WARN L286 SmtUtils]: Spent 15.54s on a formula simplification. DAG size of input: 490 DAG size of output: 457 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:16:44,397 WARN L286 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 576 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:16:49,913 WARN L286 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 576 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:17:08,475 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification. DAG size of input: 462 DAG size of output: 459 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:17:14,419 WARN L286 SmtUtils]: Spent 5.39s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:17:20,114 WARN L286 SmtUtils]: Spent 5.19s 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) [2024-11-14 03:17:25,870 WARN L286 SmtUtils]: Spent 5.24s 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) [2024-11-14 03:17:31,674 WARN L286 SmtUtils]: Spent 5.26s 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) [2024-11-14 03:17:37,359 WARN L286 SmtUtils]: Spent 5.19s on a formula simplification that was a NOOP. DAG size: 580 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:18:09,197 WARN L286 SmtUtils]: Spent 5.34s on a formula simplification that was a NOOP. DAG size: 590 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:18:15,235 WARN L286 SmtUtils]: Spent 5.36s on a formula simplification that was a NOOP. DAG size: 590 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:18:41,812 WARN L286 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 613 DAG size of output: 611 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:18:47,839 WARN L286 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 616 DAG size of output: 614 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:18:47,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [992710282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:18:47,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:18:47,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [5, 6, 7] total 61 [2024-11-14 03:18:47,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770110598] [2024-11-14 03:18:47,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:18:47,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-14 03:18:47,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:18:47,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-14 03:18:47,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=3302, Unknown=0, NotChecked=0, Total=3660 [2024-11-14 03:18:47,845 INFO L87 Difference]: Start difference. First operand 4237 states and 6899 transitions. Second operand has 49 states, 34 states have (on average 1.8235294117647058) internal successors, (62), 31 states have internal predecessors, (62), 13 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (17), 15 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-14 03:19:04,843 WARN L286 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 604 DAG size of output: 575 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:19:38,240 WARN L286 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 576 DAG size of output: 572 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:19:43,951 WARN L286 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 578 DAG size of output: 574 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:19:49,536 WARN L286 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 578 DAG size of output: 574 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:19:58,376 WARN L286 SmtUtils]: Spent 6.35s on a formula simplification. DAG size of input: 458 DAG size of output: 454 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:21:10,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:21:10,250 INFO L93 Difference]: Finished difference Result 8675 states and 14116 transitions. [2024-11-14 03:21:10,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-14 03:21:10,252 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 34 states have (on average 1.8235294117647058) internal successors, (62), 31 states have internal predecessors, (62), 13 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (17), 15 states have call predecessors, (17), 12 states have call successors, (17) Word has length 111 [2024-11-14 03:21:10,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:21:10,291 INFO L225 Difference]: With dead ends: 8675 [2024-11-14 03:21:10,291 INFO L226 Difference]: Without dead ends: 4461 [2024-11-14 03:21:10,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 272 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 358.1s TimeCoverageRelationStatistics Valid=474, Invalid=4928, Unknown=0, NotChecked=0, Total=5402 [2024-11-14 03:21:10,339 INFO L432 NwaCegarLoop]: 597 mSDtfsCounter, 416 mSDsluCounter, 8674 mSDsCounter, 0 mSdLazyCounter, 12074 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 9271 SdHoareTripleChecker+Invalid, 12190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 12074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:21:10,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 9271 Invalid, 12190 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [116 Valid, 12074 Invalid, 0 Unknown, 0 Unchecked, 75.5s Time] [2024-11-14 03:21:10,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4461 states. [2024-11-14 03:21:10,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4461 to 4391. [2024-11-14 03:21:11,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4391 states, 3118 states have (on average 1.45349583066068) internal successors, (4532), 3239 states have internal predecessors, (4532), 943 states have call successors, (943), 332 states have call predecessors, (943), 329 states have return successors, (1618), 928 states have call predecessors, (1618), 925 states have call successors, (1618) [2024-11-14 03:21:11,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 7093 transitions. [2024-11-14 03:21:11,048 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 7093 transitions. Word has length 111 [2024-11-14 03:21:11,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:21:11,049 INFO L471 AbstractCegarLoop]: Abstraction has 4391 states and 7093 transitions. [2024-11-14 03:21:11,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 34 states have (on average 1.8235294117647058) internal successors, (62), 31 states have internal predecessors, (62), 13 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (17), 15 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-14 03:21:11,053 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 7093 transitions. [2024-11-14 03:21:11,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-14 03:21:11,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:21:11,067 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-14 03:21:11,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 03:21:11,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:21:11,268 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:21:11,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:21:11,269 INFO L85 PathProgramCache]: Analyzing trace with hash 533229676, now seen corresponding path program 1 times [2024-11-14 03:21:11,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:21:11,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026333529] [2024-11-14 03:21:11,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:21:11,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:21:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:21:11,716 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-14 03:21:11,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:21:11,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026333529] [2024-11-14 03:21:11,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026333529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:21:11,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591581527] [2024-11-14 03:21:11,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:21:11,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:21:11,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:21:11,719 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:21:11,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eeb4722e-8e2b-415a-a1d1-b917759c7d0d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 03:21:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:21:12,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:21:12,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:21:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-14 03:21:12,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:21:12,753 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-14 03:21:12,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591581527] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:21:12,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [546890235] [2024-11-14 03:21:12,759 INFO L159 IcfgInterpreter]: Started Sifa with 94 locations of interest [2024-11-14 03:21:12,759 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:21:12,760 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:21:12,761 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:21:12,761 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:21:31,695 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 33 for LOIs [2024-11-14 03:21:32,268 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 55 for LOIs [2024-11-14 03:21:32,459 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 55 for LOIs [2024-11-14 03:21:32,570 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 57 for LOIs [2024-11-14 03:21:32,595 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 63 for LOIs [2024-11-14 03:21:32,611 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 76 for LOIs [2024-11-14 03:21:32,709 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 53 for LOIs [2024-11-14 03:21:32,715 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 27 for LOIs [2024-11-14 03:21:32,718 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 538 for LOIs [2024-11-14 03:21:40,757 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 620 for LOIs [2024-11-14 03:21:43,678 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 512 for LOIs [2024-11-14 03:21:44,853 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:22:08,927 WARN L286 SmtUtils]: Spent 8.29s on a formula simplification. DAG size of input: 546 DAG size of output: 516 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:22:35,207 WARN L286 SmtUtils]: Spent 15.60s on a formula simplification. DAG size of input: 620 DAG size of output: 584 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:22:54,368 WARN L286 SmtUtils]: Spent 17.70s on a formula simplification. DAG size of input: 864 DAG size of output: 666 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:23:38,642 WARN L286 SmtUtils]: Spent 6.11s on a formula simplification that was a NOOP. DAG size: 464 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:23:39,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [546890235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:23:39,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:23:39,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [8, 6, 7] total 69 [2024-11-14 03:23:39,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027482100] [2024-11-14 03:23:39,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:23:39,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-14 03:23:39,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:23:39,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-14 03:23:39,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=4268, Unknown=0, NotChecked=0, Total=4692 [2024-11-14 03:23:39,406 INFO L87 Difference]: Start difference. First operand 4391 states and 7093 transitions. Second operand has 54 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 35 states have internal predecessors, (65), 15 states have call successors, (20), 11 states have call predecessors, (20), 12 states have return successors, (18), 16 states have call predecessors, (18), 14 states have call successors, (18) [2024-11-14 03:23:56,049 WARN L286 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 617 DAG size of output: 584 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:24:02,746 WARN L286 SmtUtils]: Spent 6.34s on a formula simplification. DAG size of input: 680 DAG size of output: 676 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:25:35,103 WARN L286 SmtUtils]: Spent 6.22s on a formula simplification that was a NOOP. DAG size: 466 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:25:45,815 WARN L286 SmtUtils]: Spent 9.34s on a formula simplification. DAG size of input: 518 DAG size of output: 515 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:25:57,794 WARN L286 SmtUtils]: Spent 9.44s on a formula simplification. DAG size of input: 520 DAG size of output: 517 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:26:05,186 WARN L286 SmtUtils]: Spent 6.37s on a formula simplification that was a NOOP. DAG size: 468 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)