./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product24.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_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/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_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/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_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/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 d9a9e332bba43f0e6d965514fc764881b170e0a0500d860d4fcce12986d98914 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:30:36,878 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:30:36,969 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-13 23:30:36,975 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:30:36,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:30:37,000 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:30:37,000 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:30:37,001 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:30:37,001 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:30:37,001 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:30:37,001 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:30:37,001 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:30:37,001 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:30:37,001 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:30:37,002 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:30:37,002 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:30:37,002 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:30:37,002 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:30:37,002 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:30:37,002 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:30:37,002 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:30:37,002 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:30:37,003 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:30:37,003 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:30:37,003 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:30:37,003 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:30:37,003 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:30:37,003 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:30:37,004 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:30:37,004 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:30:37,004 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:30:37,004 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:30:37,004 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:30:37,004 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:30:37,004 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:30:37,004 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:30:37,005 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:30:37,005 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:30:37,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:30:37,005 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:30:37,005 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:30:37,005 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:30:37,005 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:30:37,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:30:37,005 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:30:37,006 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:30:37,006 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:30:37,006 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_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/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 -> d9a9e332bba43f0e6d965514fc764881b170e0a0500d860d4fcce12986d98914 [2024-11-13 23:30:37,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:30:37,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:30:37,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:30:37,380 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:30:37,380 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:30:37,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c Unable to find full path for "g++" [2024-11-13 23:30:39,353 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:30:39,769 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:30:39,770 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c [2024-11-13 23:30:39,790 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/data/6ae2f062b/ce7633c5fc0f4b3d9fe57d7de0404c7a/FLAGf62c548cc [2024-11-13 23:30:39,806 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/data/6ae2f062b/ce7633c5fc0f4b3d9fe57d7de0404c7a [2024-11-13 23:30:39,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:30:39,810 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:30:39,812 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:30:39,812 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:30:39,817 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:30:39,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:30:39" (1/1) ... [2024-11-13 23:30:39,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a8e4d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:30:39, skipping insertion in model container [2024-11-13 23:30:39,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:30:39" (1/1) ... [2024-11-13 23:30:39,888 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:30:40,620 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_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c[71679,71692] [2024-11-13 23:30:40,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:30:40,653 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:30:40,662 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2024-11-13 23:30:40,664 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [408] [2024-11-13 23:30:40,665 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification14_spec.i","") [422] [2024-11-13 23:30:40,666 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [467] [2024-11-13 23:30:40,667 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2112] [2024-11-13 23:30:40,667 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2773] [2024-11-13 23:30:40,667 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3139] [2024-11-13 23:30:40,669 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3174] [2024-11-13 23:30:40,669 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3292] [2024-11-13 23:30:40,670 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3383] [2024-11-13 23:30:40,874 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_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/sv-benchmarks/c/product-lines/elevator_spec14_product24.cil.c[71679,71692] [2024-11-13 23:30:40,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:30:40,910 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:30:40,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:30:40 WrapperNode [2024-11-13 23:30:40,911 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:30:40,912 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:30:40,912 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:30:40,912 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:30:40,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:30:40" (1/1) ... [2024-11-13 23:30:40,959 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:30:40" (1/1) ... [2024-11-13 23:30:41,016 INFO L138 Inliner]: procedures = 95, calls = 346, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 861 [2024-11-13 23:30:41,017 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:30:41,017 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:30:41,018 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:30:41,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:30:41,027 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:30:40" (1/1) ... [2024-11-13 23:30:41,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:30:40" (1/1) ... [2024-11-13 23:30:41,037 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:30:40" (1/1) ... [2024-11-13 23:30:41,037 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:30:40" (1/1) ... [2024-11-13 23:30:41,071 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:30:40" (1/1) ... [2024-11-13 23:30:41,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:30:40" (1/1) ... [2024-11-13 23:30:41,097 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:30:40" (1/1) ... [2024-11-13 23:30:41,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:30:40" (1/1) ... [2024-11-13 23:30:41,126 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:30:41,127 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:30:41,127 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:30:41,127 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:30:41,128 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:30:40" (1/1) ... [2024-11-13 23:30:41,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:30:41,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:30:41,171 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:30:41,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:30:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:30:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-13 23:30:41,242 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-13 23:30:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-13 23:30:41,242 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-13 23:30:41,242 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-13 23:30:41,242 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-13 23:30:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-13 23:30:41,243 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-13 23:30:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-13 23:30:41,243 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-13 23:30:41,244 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-13 23:30:41,244 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-13 23:30:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-13 23:30:41,245 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-13 23:30:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-13 23:30:41,245 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-13 23:30:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-13 23:30:41,245 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-13 23:30:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-13 23:30:41,245 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-13 23:30:41,246 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-13 23:30:41,246 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-13 23:30:41,248 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-13 23:30:41,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-13 23:30:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-13 23:30:41,249 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-13 23:30:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-13 23:30:41,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-13 23:30:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-13 23:30:41,249 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-13 23:30:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-13 23:30:41,249 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-13 23:30:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-13 23:30:41,249 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-13 23:30:41,250 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-13 23:30:41,250 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-13 23:30:41,250 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-13 23:30:41,250 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-13 23:30:41,250 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-13 23:30:41,250 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-13 23:30:41,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 23:30:41,250 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-13 23:30:41,250 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-13 23:30:41,250 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-13 23:30:41,250 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-13 23:30:41,250 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-13 23:30:41,250 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-13 23:30:41,250 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-13 23:30:41,250 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-13 23:30:41,251 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-11-13 23:30:41,251 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-11-13 23:30:41,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:30:41,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:30:41,251 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-13 23:30:41,251 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-13 23:30:41,251 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-11-13 23:30:41,251 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-11-13 23:30:41,476 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:30:41,481 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:30:43,298 INFO L? ?]: Removed 463 outVars from TransFormulas that were not future-live. [2024-11-13 23:30:43,299 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:30:44,641 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:30:44,641 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 23:30:44,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:30:44 BoogieIcfgContainer [2024-11-13 23:30:44,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:30:44,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:30:44,645 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:30:44,653 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:30:44,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:30:39" (1/3) ... [2024-11-13 23:30:44,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d6afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:30:44, skipping insertion in model container [2024-11-13 23:30:44,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:30:40" (2/3) ... [2024-11-13 23:30:44,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d6afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:30:44, skipping insertion in model container [2024-11-13 23:30:44,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:30:44" (3/3) ... [2024-11-13 23:30:44,657 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product24.cil.c [2024-11-13 23:30:44,678 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:30:44,683 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec14_product24.cil.c that has 28 procedures, 389 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 23:30:44,784 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:30:44,804 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;@4245be13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:30:44,804 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 23:30:44,811 INFO L276 IsEmpty]: Start isEmpty. Operand has 389 states, 257 states have (on average 1.5447470817120623) internal successors, (397), 275 states have internal predecessors, (397), 103 states have call successors, (103), 27 states have call predecessors, (103), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-13 23:30:44,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 23:30:44,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:30:44,828 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:30:44,829 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:30:44,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:30:44,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1970254718, now seen corresponding path program 1 times [2024-11-13 23:30:44,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:30:44,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569750600] [2024-11-13 23:30:44,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:30:44,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:30:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:30:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 23:30:45,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:30:45,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569750600] [2024-11-13 23:30:45,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569750600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:30:45,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:30:45,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:30:45,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824711591] [2024-11-13 23:30:45,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:30:45,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 23:30:45,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:30:45,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 23:30:45,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:30:45,978 INFO L87 Difference]: Start difference. First operand has 389 states, 257 states have (on average 1.5447470817120623) internal successors, (397), 275 states have internal predecessors, (397), 103 states have call successors, (103), 27 states have call predecessors, (103), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-13 23:30:46,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:30:46,599 INFO L93 Difference]: Finished difference Result 1143 states and 1798 transitions. [2024-11-13 23:30:46,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 23:30:46,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 43 [2024-11-13 23:30:46,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:30:46,639 INFO L225 Difference]: With dead ends: 1143 [2024-11-13 23:30:46,640 INFO L226 Difference]: Without dead ends: 755 [2024-11-13 23:30:46,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 23:30:46,656 INFO L432 NwaCegarLoop]: 627 mSDtfsCounter, 577 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:30:46,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 1159 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:30:46,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2024-11-13 23:30:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 719. [2024-11-13 23:30:46,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 489 states have (on average 1.5460122699386503) internal successors, (756), 515 states have internal predecessors, (756), 182 states have call successors, (182), 49 states have call predecessors, (182), 47 states have return successors, (187), 169 states have call predecessors, (187), 180 states have call successors, (187) [2024-11-13 23:30:46,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1125 transitions. [2024-11-13 23:30:46,859 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1125 transitions. Word has length 43 [2024-11-13 23:30:46,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:30:46,862 INFO L471 AbstractCegarLoop]: Abstraction has 719 states and 1125 transitions. [2024-11-13 23:30:46,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-13 23:30:46,862 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1125 transitions. [2024-11-13 23:30:46,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-13 23:30:46,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:30:46,882 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-11-13 23:30:46,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 23:30:46,883 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:30:46,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:30:46,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1860553366, now seen corresponding path program 1 times [2024-11-13 23:30:46,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:30:46,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142710481] [2024-11-13 23:30:46,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:30:46,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:30:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:30:47,596 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-13 23:30:47,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:30:47,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142710481] [2024-11-13 23:30:47,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142710481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:30:47,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331844274] [2024-11-13 23:30:47,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:30:47,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:30:47,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:30:47,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:30:47,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 23:30:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:30:48,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 23:30:48,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:30:48,273 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 23:30:48,273 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:30:48,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331844274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:30:48,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:30:48,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-13 23:30:48,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732122866] [2024-11-13 23:30:48,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:30:48,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 23:30:48,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:30:48,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 23:30:48,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-13 23:30:48,281 INFO L87 Difference]: Start difference. First operand 719 states and 1125 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-13 23:30:49,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:30:49,187 INFO L93 Difference]: Finished difference Result 1640 states and 2552 transitions. [2024-11-13 23:30:49,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 23:30:49,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 86 [2024-11-13 23:30:49,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:30:49,203 INFO L225 Difference]: With dead ends: 1640 [2024-11-13 23:30:49,203 INFO L226 Difference]: Without dead ends: 932 [2024-11-13 23:30:49,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-13 23:30:49,215 INFO L432 NwaCegarLoop]: 632 mSDtfsCounter, 366 mSDsluCounter, 2063 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:30:49,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 2695 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 23:30:49,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2024-11-13 23:30:49,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 922. [2024-11-13 23:30:49,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 613 states have (on average 1.4861337683523654) internal successors, (911), 640 states have internal predecessors, (911), 237 states have call successors, (237), 75 states have call predecessors, (237), 71 states have return successors, (267), 220 states have call predecessors, (267), 233 states have call successors, (267) [2024-11-13 23:30:49,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1415 transitions. [2024-11-13 23:30:49,349 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1415 transitions. Word has length 86 [2024-11-13 23:30:49,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:30:49,349 INFO L471 AbstractCegarLoop]: Abstraction has 922 states and 1415 transitions. [2024-11-13 23:30:49,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-13 23:30:49,349 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1415 transitions. [2024-11-13 23:30:49,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-13 23:30:49,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:30:49,355 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-11-13 23:30:49,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 23:30:49,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:30:49,556 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:30:49,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:30:49,557 INFO L85 PathProgramCache]: Analyzing trace with hash 240162937, now seen corresponding path program 1 times [2024-11-13 23:30:49,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:30:49,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218838034] [2024-11-13 23:30:49,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:30:49,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:30:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:30:50,102 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 23:30:50,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:30:50,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218838034] [2024-11-13 23:30:50,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218838034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:30:50,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:30:50,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 23:30:50,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674554349] [2024-11-13 23:30:50,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:30:50,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 23:30:50,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:30:50,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 23:30:50,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:30:50,105 INFO L87 Difference]: Start difference. First operand 922 states and 1415 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-13 23:30:53,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:30:53,414 INFO L93 Difference]: Finished difference Result 2797 states and 4351 transitions. [2024-11-13 23:30:53,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 23:30:53,415 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 87 [2024-11-13 23:30:53,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:30:53,434 INFO L225 Difference]: With dead ends: 2797 [2024-11-13 23:30:53,435 INFO L226 Difference]: Without dead ends: 1888 [2024-11-13 23:30:53,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-13 23:30:53,486 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 1155 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 2495 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 2953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 2495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-13 23:30:53,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1250 Valid, 1261 Invalid, 2953 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [458 Valid, 2495 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-13 23:30:53,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2024-11-13 23:30:53,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1680. [2024-11-13 23:30:53,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1131 states have (on average 1.5057471264367817) internal successors, (1703), 1181 states have internal predecessors, (1703), 418 states have call successors, (418), 131 states have call predecessors, (418), 130 states have return successors, (486), 393 states have call predecessors, (486), 412 states have call successors, (486) [2024-11-13 23:30:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2607 transitions. [2024-11-13 23:30:53,754 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2607 transitions. Word has length 87 [2024-11-13 23:30:53,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:30:53,756 INFO L471 AbstractCegarLoop]: Abstraction has 1680 states and 2607 transitions. [2024-11-13 23:30:53,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-13 23:30:53,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2607 transitions. [2024-11-13 23:30:53,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-13 23:30:53,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:30:53,768 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-11-13 23:30:53,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 23:30:53,769 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:30:53,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:30:53,770 INFO L85 PathProgramCache]: Analyzing trace with hash -837733696, now seen corresponding path program 1 times [2024-11-13 23:30:53,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:30:53,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396302502] [2024-11-13 23:30:53,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:30:53,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:30:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:30:54,370 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-13 23:30:54,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:30:54,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396302502] [2024-11-13 23:30:54,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396302502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:30:54,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:30:54,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 23:30:54,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356025698] [2024-11-13 23:30:54,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:30:54,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 23:30:54,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:30:54,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 23:30:54,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-13 23:30:54,376 INFO L87 Difference]: Start difference. First operand 1680 states and 2607 transitions. Second operand has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-13 23:30:58,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:30:58,190 INFO L93 Difference]: Finished difference Result 2106 states and 3291 transitions. [2024-11-13 23:30:58,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 23:30:58,191 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 91 [2024-11-13 23:30:58,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:30:58,210 INFO L225 Difference]: With dead ends: 2106 [2024-11-13 23:30:58,210 INFO L226 Difference]: Without dead ends: 2104 [2024-11-13 23:30:58,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-11-13 23:30:58,214 INFO L432 NwaCegarLoop]: 441 mSDtfsCounter, 1194 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 3514 mSolverCounterSat, 719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 4233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 3514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:30:58,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1216 Valid, 2098 Invalid, 4233 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [719 Valid, 3514 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-13 23:30:58,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2024-11-13 23:30:58,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 1896. [2024-11-13 23:30:58,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1249 states have (on average 1.4939951961569256) internal successors, (1866), 1321 states have internal predecessors, (1866), 509 states have call successors, (509), 131 states have call predecessors, (509), 137 states have return successors, (569), 482 states have call predecessors, (569), 503 states have call successors, (569) [2024-11-13 23:30:58,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2944 transitions. [2024-11-13 23:30:58,409 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2944 transitions. Word has length 91 [2024-11-13 23:30:58,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:30:58,411 INFO L471 AbstractCegarLoop]: Abstraction has 1896 states and 2944 transitions. [2024-11-13 23:30:58,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-13 23:30:58,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2944 transitions. [2024-11-13 23:30:58,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-13 23:30:58,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:30:58,417 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2024-11-13 23:30:58,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 23:30:58,417 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:30:58,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:30:58,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1737321730, now seen corresponding path program 1 times [2024-11-13 23:30:58,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:30:58,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910277678] [2024-11-13 23:30:58,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:30:58,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:30:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:30:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-13 23:30:58,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:30:58,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910277678] [2024-11-13 23:30:58,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910277678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:30:58,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:30:58,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 23:30:58,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885935620] [2024-11-13 23:30:58,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:30:58,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:30:58,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:30:58,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:30:58,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:30:58,635 INFO L87 Difference]: Start difference. First operand 1896 states and 2944 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), 1 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-13 23:30:58,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:30:58,992 INFO L93 Difference]: Finished difference Result 3792 states and 5932 transitions. [2024-11-13 23:30:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:30:58,993 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), 1 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 122 [2024-11-13 23:30:58,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:30:59,014 INFO L225 Difference]: With dead ends: 3792 [2024-11-13 23:30:59,014 INFO L226 Difference]: Without dead ends: 1908 [2024-11-13 23:30:59,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:30:59,031 INFO L432 NwaCegarLoop]: 556 mSDtfsCounter, 0 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:30:59,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1662 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 23:30:59,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2024-11-13 23:30:59,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1908. [2024-11-13 23:30:59,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1261 states have (on average 1.4892942109436955) internal successors, (1878), 1333 states have internal predecessors, (1878), 509 states have call successors, (509), 131 states have call predecessors, (509), 137 states have return successors, (569), 482 states have call predecessors, (569), 503 states have call successors, (569) [2024-11-13 23:30:59,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 2956 transitions. [2024-11-13 23:30:59,237 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 2956 transitions. Word has length 122 [2024-11-13 23:30:59,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:30:59,238 INFO L471 AbstractCegarLoop]: Abstraction has 1908 states and 2956 transitions. [2024-11-13 23:30:59,239 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), 1 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-13 23:30:59,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 2956 transitions. [2024-11-13 23:30:59,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-13 23:30:59,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:30:59,249 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:30:59,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 23:30:59,250 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:30:59,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:30:59,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1145468192, now seen corresponding path program 1 times [2024-11-13 23:30:59,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:30:59,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091563019] [2024-11-13 23:30:59,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:30:59,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:30:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:30:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-13 23:30:59,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:30:59,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091563019] [2024-11-13 23:30:59,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091563019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:30:59,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31676338] [2024-11-13 23:30:59,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:30:59,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:30:59,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:30:59,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:30:59,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 23:31:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:00,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 1483 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:31:00,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:31:00,206 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-13 23:31:00,206 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:31:00,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31676338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:31:00,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:31:00,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-13 23:31:00,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423599124] [2024-11-13 23:31:00,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:31:00,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:31:00,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:31:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:31:00,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-13 23:31:00,209 INFO L87 Difference]: Start difference. First operand 1908 states and 2956 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-13 23:31:00,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:31:00,735 INFO L93 Difference]: Finished difference Result 3984 states and 6312 transitions. [2024-11-13 23:31:00,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:31:00,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 129 [2024-11-13 23:31:00,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:31:00,758 INFO L225 Difference]: With dead ends: 3984 [2024-11-13 23:31:00,758 INFO L226 Difference]: Without dead ends: 2088 [2024-11-13 23:31:00,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-13 23:31:00,774 INFO L432 NwaCegarLoop]: 496 mSDtfsCounter, 144 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:31:00,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1465 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:31:00,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2024-11-13 23:31:00,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 2064. [2024-11-13 23:31:00,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2064 states, 1413 states have (on average 1.5357395612172682) internal successors, (2170), 1485 states have internal predecessors, (2170), 509 states have call successors, (509), 135 states have call predecessors, (509), 141 states have return successors, (569), 482 states have call predecessors, (569), 503 states have call successors, (569) [2024-11-13 23:31:00,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 3248 transitions. [2024-11-13 23:31:00,973 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 3248 transitions. Word has length 129 [2024-11-13 23:31:00,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:31:00,973 INFO L471 AbstractCegarLoop]: Abstraction has 2064 states and 3248 transitions. [2024-11-13 23:31:00,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-13 23:31:00,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 3248 transitions. [2024-11-13 23:31:00,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-13 23:31:00,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:31:00,982 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:31:01,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 23:31:01,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:31:01,183 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:31:01,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:31:01,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1836474864, now seen corresponding path program 1 times [2024-11-13 23:31:01,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:31:01,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104213082] [2024-11-13 23:31:01,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:01,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:31:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:01,409 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-13 23:31:01,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:31:01,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104213082] [2024-11-13 23:31:01,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104213082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:31:01,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781687631] [2024-11-13 23:31:01,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:01,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:31:01,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:31:01,414 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:31:01,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 23:31:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:01,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:31:01,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:31:01,887 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 23:31:01,887 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:31:01,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781687631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:31:01,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:31:01,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-13 23:31:01,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966591049] [2024-11-13 23:31:01,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:31:01,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:31:01,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:31:01,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:31:01,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:31:01,889 INFO L87 Difference]: Start difference. First operand 2064 states and 3248 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-13 23:31:02,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:31:02,461 INFO L93 Difference]: Finished difference Result 4308 states and 6898 transitions. [2024-11-13 23:31:02,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:31:02,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 134 [2024-11-13 23:31:02,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:31:02,483 INFO L225 Difference]: With dead ends: 4308 [2024-11-13 23:31:02,483 INFO L226 Difference]: Without dead ends: 2256 [2024-11-13 23:31:02,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:31:02,497 INFO L432 NwaCegarLoop]: 495 mSDtfsCounter, 142 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:31:02,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1462 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:31:02,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2024-11-13 23:31:02,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2220. [2024-11-13 23:31:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 1565 states have (on average 1.5731629392971247) internal successors, (2462), 1637 states have internal predecessors, (2462), 509 states have call successors, (509), 139 states have call predecessors, (509), 145 states have return successors, (569), 482 states have call predecessors, (569), 503 states have call successors, (569) [2024-11-13 23:31:02,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 3540 transitions. [2024-11-13 23:31:02,682 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 3540 transitions. Word has length 134 [2024-11-13 23:31:02,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:31:02,683 INFO L471 AbstractCegarLoop]: Abstraction has 2220 states and 3540 transitions. [2024-11-13 23:31:02,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-13 23:31:02,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 3540 transitions. [2024-11-13 23:31:02,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-13 23:31:02,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:31:02,691 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:31:02,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 23:31:02,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:31:02,895 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:31:02,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:31:02,896 INFO L85 PathProgramCache]: Analyzing trace with hash 439475872, now seen corresponding path program 1 times [2024-11-13 23:31:02,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:31:02,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573665765] [2024-11-13 23:31:02,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:02,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:31:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-13 23:31:03,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:31:03,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573665765] [2024-11-13 23:31:03,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573665765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:31:03,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074038074] [2024-11-13 23:31:03,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:03,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:31:03,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:31:03,109 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:31:03,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 23:31:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:03,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:31:03,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:31:03,572 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 23:31:03,573 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:31:03,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074038074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:31:03,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:31:03,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-13 23:31:03,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244752387] [2024-11-13 23:31:03,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:31:03,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:31:03,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:31:03,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:31:03,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:31:03,576 INFO L87 Difference]: Start difference. First operand 2220 states and 3540 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-13 23:31:04,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:31:04,320 INFO L93 Difference]: Finished difference Result 4632 states and 7484 transitions. [2024-11-13 23:31:04,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:31:04,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 138 [2024-11-13 23:31:04,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:31:04,349 INFO L225 Difference]: With dead ends: 4632 [2024-11-13 23:31:04,349 INFO L226 Difference]: Without dead ends: 2424 [2024-11-13 23:31:04,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:31:04,368 INFO L432 NwaCegarLoop]: 494 mSDtfsCounter, 140 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:31:04,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1459 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:31:04,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2024-11-13 23:31:04,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2376. [2024-11-13 23:31:04,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2376 states, 1717 states have (on average 1.603960396039604) internal successors, (2754), 1789 states have internal predecessors, (2754), 509 states have call successors, (509), 143 states have call predecessors, (509), 149 states have return successors, (569), 482 states have call predecessors, (569), 503 states have call successors, (569) [2024-11-13 23:31:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2376 states to 2376 states and 3832 transitions. [2024-11-13 23:31:04,593 INFO L78 Accepts]: Start accepts. Automaton has 2376 states and 3832 transitions. Word has length 138 [2024-11-13 23:31:04,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:31:04,594 INFO L471 AbstractCegarLoop]: Abstraction has 2376 states and 3832 transitions. [2024-11-13 23:31:04,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-13 23:31:04,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2376 states and 3832 transitions. [2024-11-13 23:31:04,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-13 23:31:04,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:31:04,603 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:31:04,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 23:31:04,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:31:04,803 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:31:04,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:31:04,804 INFO L85 PathProgramCache]: Analyzing trace with hash 294321920, now seen corresponding path program 1 times [2024-11-13 23:31:04,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:31:04,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281163324] [2024-11-13 23:31:04,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:04,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:31:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:05,021 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-13 23:31:05,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:31:05,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281163324] [2024-11-13 23:31:05,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281163324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:31:05,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6360529] [2024-11-13 23:31:05,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:05,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:31:05,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:31:05,025 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:31:05,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 23:31:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:05,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:31:05,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:31:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 23:31:05,541 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:31:05,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6360529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:31:05,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:31:05,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-13 23:31:05,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363593652] [2024-11-13 23:31:05,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:31:05,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:31:05,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:31:05,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:31:05,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 23:31:05,543 INFO L87 Difference]: Start difference. First operand 2376 states and 3832 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-13 23:31:06,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:31:06,108 INFO L93 Difference]: Finished difference Result 4956 states and 8070 transitions. [2024-11-13 23:31:06,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:31:06,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 141 [2024-11-13 23:31:06,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:31:06,130 INFO L225 Difference]: With dead ends: 4956 [2024-11-13 23:31:06,130 INFO L226 Difference]: Without dead ends: 2592 [2024-11-13 23:31:06,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:31:06,145 INFO L432 NwaCegarLoop]: 493 mSDtfsCounter, 138 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:31:06,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1456 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:31:06,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2024-11-13 23:31:06,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 2532. [2024-11-13 23:31:06,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2532 states, 1869 states have (on average 1.6297485286249331) internal successors, (3046), 1941 states have internal predecessors, (3046), 509 states have call successors, (509), 147 states have call predecessors, (509), 153 states have return successors, (569), 482 states have call predecessors, (569), 503 states have call successors, (569) [2024-11-13 23:31:06,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 4124 transitions. [2024-11-13 23:31:06,350 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 4124 transitions. Word has length 141 [2024-11-13 23:31:06,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:31:06,353 INFO L471 AbstractCegarLoop]: Abstraction has 2532 states and 4124 transitions. [2024-11-13 23:31:06,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-13 23:31:06,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 4124 transitions. [2024-11-13 23:31:06,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-13 23:31:06,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:31:06,362 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:31:06,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 23:31:06,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:31:06,567 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:31:06,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:31:06,567 INFO L85 PathProgramCache]: Analyzing trace with hash 807638800, now seen corresponding path program 1 times [2024-11-13 23:31:06,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:31:06,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007049746] [2024-11-13 23:31:06,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:06,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:31:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-13 23:31:06,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:31:06,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007049746] [2024-11-13 23:31:06,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007049746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:31:06,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:31:06,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 23:31:06,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799028112] [2024-11-13 23:31:06,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:31:06,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:31:06,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:31:06,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:31:06,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:31:06,778 INFO L87 Difference]: Start difference. First operand 2532 states and 4124 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (20), 1 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-13 23:31:07,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:31:07,296 INFO L93 Difference]: Finished difference Result 5288 states and 8658 transitions. [2024-11-13 23:31:07,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:31:07,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (20), 1 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 143 [2024-11-13 23:31:07,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:31:07,322 INFO L225 Difference]: With dead ends: 5288 [2024-11-13 23:31:07,323 INFO L226 Difference]: Without dead ends: 2736 [2024-11-13 23:31:07,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:31:07,337 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 64 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:31:07,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1477 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:31:07,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2024-11-13 23:31:07,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2668. [2024-11-13 23:31:07,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 2001 states have (on average 1.5582208895552223) internal successors, (3118), 2073 states have internal predecessors, (3118), 509 states have call successors, (509), 151 states have call predecessors, (509), 157 states have return successors, (569), 482 states have call predecessors, (569), 503 states have call successors, (569) [2024-11-13 23:31:07,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 4196 transitions. [2024-11-13 23:31:07,588 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 4196 transitions. Word has length 143 [2024-11-13 23:31:07,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:31:07,588 INFO L471 AbstractCegarLoop]: Abstraction has 2668 states and 4196 transitions. [2024-11-13 23:31:07,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (20), 1 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-13 23:31:07,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 4196 transitions. [2024-11-13 23:31:07,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-13 23:31:07,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:31:07,598 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:31:07,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 23:31:07,599 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:31:07,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:31:07,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1835422463, now seen corresponding path program 1 times [2024-11-13 23:31:07,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:31:07,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083137553] [2024-11-13 23:31:07,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:07,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:31:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:07,990 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-13 23:31:07,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:31:07,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083137553] [2024-11-13 23:31:07,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083137553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:31:07,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:31:07,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 23:31:07,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224121057] [2024-11-13 23:31:07,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:31:07,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 23:31:07,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:31:07,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 23:31:07,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 23:31:07,996 INFO L87 Difference]: Start difference. First operand 2668 states and 4196 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 6 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2024-11-13 23:31:12,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:31:12,692 INFO L93 Difference]: Finished difference Result 6865 states and 10989 transitions. [2024-11-13 23:31:12,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 23:31:12,692 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 6 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) Word has length 143 [2024-11-13 23:31:12,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:31:12,729 INFO L225 Difference]: With dead ends: 6865 [2024-11-13 23:31:12,729 INFO L226 Difference]: Without dead ends: 3844 [2024-11-13 23:31:12,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2024-11-13 23:31:12,749 INFO L432 NwaCegarLoop]: 448 mSDtfsCounter, 1529 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 4225 mSolverCounterSat, 772 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 4997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 4225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:31:12,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 1986 Invalid, 4997 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [772 Valid, 4225 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-13 23:31:12,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3844 states. [2024-11-13 23:31:13,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3844 to 3666. [2024-11-13 23:31:13,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 2616 states have (on average 1.480886850152905) internal successors, (3874), 2746 states have internal predecessors, (3874), 793 states have call successors, (793), 231 states have call predecessors, (793), 256 states have return successors, (988), 745 states have call predecessors, (988), 787 states have call successors, (988) [2024-11-13 23:31:13,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 5655 transitions. [2024-11-13 23:31:13,157 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 5655 transitions. Word has length 143 [2024-11-13 23:31:13,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:31:13,159 INFO L471 AbstractCegarLoop]: Abstraction has 3666 states and 5655 transitions. [2024-11-13 23:31:13,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 6 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2024-11-13 23:31:13,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 5655 transitions. [2024-11-13 23:31:13,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-13 23:31:13,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:31:13,168 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:31:13,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 23:31:13,168 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:31:13,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:31:13,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1272669104, now seen corresponding path program 1 times [2024-11-13 23:31:13,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:31:13,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059993240] [2024-11-13 23:31:13,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:13,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:31:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:17,984 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-13 23:31:17,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:31:17,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059993240] [2024-11-13 23:31:17,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059993240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:31:17,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679382138] [2024-11-13 23:31:17,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:31:17,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:31:17,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:31:17,987 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:31:17,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63d4603b-b24b-4a8c-80fb-53b360ee4cfc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 23:31:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:31:18,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-13 23:31:18,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:31:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-13 23:31:21,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:32:21,285 WARN L286 SmtUtils]: Spent 59.93s on a formula simplification. DAG size of input: 773 DAG size of output: 57 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-13 23:33:23,682 WARN L286 SmtUtils]: Spent 1.01m on a formula simplification. DAG size of input: 773 DAG size of output: 57 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-13 23:34:25,219 WARN L286 SmtUtils]: Spent 1.01m on a formula simplification. DAG size of input: 773 DAG size of output: 57 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-13 23:36:33,549 WARN L286 SmtUtils]: Spent 2.13m on a formula simplification. DAG size of input: 1443 DAG size of output: 53 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-13 23:38:43,489 WARN L286 SmtUtils]: Spent 2.13m on a formula simplification. DAG size of input: 1443 DAG size of output: 53 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-13 23:39:50,483 WARN L286 SmtUtils]: Spent 59.15s on a formula simplification. DAG size of input: 773 DAG size of output: 57 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-13 23:40:48,924 WARN L286 SmtUtils]: Spent 57.41s on a formula simplification. DAG size of input: 773 DAG size of output: 57 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-13 23:40:49,509 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-13 23:40:49,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679382138] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:40:49,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [536626622] [2024-11-13 23:40:49,538 INFO L159 IcfgInterpreter]: Started Sifa with 100 locations of interest [2024-11-13 23:40:49,538 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:40:49,542 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:40:49,546 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:40:49,547 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:40:55,493 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 574 for LOIs [2024-11-13 23:41:11,251 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__executivefloor with input of size 572 for LOIs [2024-11-13 23:41:44,788 INFO L197 IcfgInterpreter]: Interpreting procedure isPersonOnFloor with input of size 460 for LOIs [2024-11-13 23:41:49,277 INFO L197 IcfgInterpreter]: Interpreting procedure areDoorsOpen with input of size 465 for LOIs [2024-11-13 23:41:50,240 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 457 for LOIs [2024-11-13 23:41:55,422 INFO L197 IcfgInterpreter]: Interpreting procedure resetCallOnFloor with input of size 465 for LOIs [2024-11-13 23:41:55,683 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 443 for LOIs [2024-11-13 23:41:55,874 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 575 for LOIs [2024-11-13 23:42:03,915 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 579 for LOIs [2024-11-13 23:42:04,515 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 507 for LOIs [2024-11-13 23:42:04,833 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull with input of size 439 for LOIs [2024-11-13 23:42:07,661 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 41 for LOIs [2024-11-13 23:42:07,707 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:42:27,907 WARN L286 SmtUtils]: Spent 5.92s on a formula simplification that was a NOOP. DAG size: 575 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:42:44,459 WARN L286 SmtUtils]: Spent 5.80s on a formula simplification that was a NOOP. DAG size: 577 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:42:50,841 WARN L286 SmtUtils]: Spent 5.79s on a formula simplification that was a NOOP. DAG size: 577 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:42:57,151 WARN L286 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 579 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:43:03,523 WARN L286 SmtUtils]: Spent 5.78s on a formula simplification that was a NOOP. DAG size: 579 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:43:29,144 WARN L286 SmtUtils]: Spent 9.07s on a formula simplification. DAG size of input: 465 DAG size of output: 465 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:43:40,414 WARN L286 SmtUtils]: Spent 8.99s on a formula simplification. DAG size of input: 467 DAG size of output: 467 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 23:43:46,085 WARN L286 SmtUtils]: Spent 5.01s 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) [2024-11-13 23:44:39,053 WARN L286 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 584 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)