./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product29.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_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/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_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/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_947548a0-0fd2-478d-b309-0dd3a1ef95bc/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 63ce65fdf446745f64534f105010543d07f1d807cf17249eadefb49fdfafb832 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:42:02,015 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:42:02,151 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 02:42:02,160 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:42:02,160 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:42:02,231 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:42:02,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:42:02,232 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:42:02,232 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:42:02,232 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:42:02,232 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:42:02,232 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:42:02,232 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:42:02,233 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 02:42:02,233 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:42:02,233 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:42:02,233 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 02:42:02,233 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 02:42:02,233 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:42:02,233 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 02:42:02,233 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 02:42:02,233 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 02:42:02,237 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:42:02,237 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 02:42:02,237 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 02:42:02,237 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 02:42:02,238 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 02:42:02,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:42:02,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 02:42:02,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:42:02,238 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 02:42:02,238 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:42:02,238 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 02:42:02,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 02:42:02,238 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:42:02,238 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:42:02,238 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:42:02,238 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:42:02,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:42:02,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:42:02,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:42:02,239 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 02:42:02,239 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 02:42:02,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 02:42:02,239 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:42:02,239 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:42:02,239 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 02:42:02,239 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_947548a0-0fd2-478d-b309-0dd3a1ef95bc/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 -> 63ce65fdf446745f64534f105010543d07f1d807cf17249eadefb49fdfafb832 [2024-11-14 02:42:02,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:42:02,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:42:02,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:42:02,616 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:42:02,617 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:42:02,618 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c Unable to find full path for "g++" [2024-11-14 02:42:04,709 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:42:05,088 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:42:05,088 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c [2024-11-14 02:42:05,109 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/data/a1ad7dadb/ddea00105d4c48beb43850b13f1a1453/FLAG31a110b6b [2024-11-14 02:42:05,130 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/data/a1ad7dadb/ddea00105d4c48beb43850b13f1a1453 [2024-11-14 02:42:05,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:42:05,133 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:42:05,135 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:42:05,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:42:05,141 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:42:05,142 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:42:05" (1/1) ... [2024-11-14 02:42:05,143 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2110f493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:05, skipping insertion in model container [2024-11-14 02:42:05,143 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:42:05" (1/1) ... [2024-11-14 02:42:05,226 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:42:05,711 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_947548a0-0fd2-478d-b309-0dd3a1ef95bc/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2024-11-14 02:42:05,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:42:05,865 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 02:42:05,874 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2024-11-14 02:42:05,876 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [716] [2024-11-14 02:42:05,877 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [736] [2024-11-14 02:42:05,877 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [857] [2024-11-14 02:42:05,877 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [2398] [2024-11-14 02:42:05,877 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2488] [2024-11-14 02:42:05,877 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2497] [2024-11-14 02:42:05,878 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2589] [2024-11-14 02:42:05,878 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2940] [2024-11-14 02:42:05,878 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2975] [2024-11-14 02:42:05,995 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_947548a0-0fd2-478d-b309-0dd3a1ef95bc/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2024-11-14 02:42:06,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:42:06,055 INFO L204 MainTranslator]: Completed translation [2024-11-14 02:42:06,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06 WrapperNode [2024-11-14 02:42:06,056 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:42:06,058 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 02:42:06,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 02:42:06,058 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 02:42:06,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,103 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,149 INFO L138 Inliner]: procedures = 91, calls = 340, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 860 [2024-11-14 02:42:06,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 02:42:06,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 02:42:06,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 02:42:06,150 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 02:42:06,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,192 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,227 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,251 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,261 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,265 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,272 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 02:42:06,273 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 02:42:06,273 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 02:42:06,273 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 02:42:06,274 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:42:06,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:06,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 02:42:06,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 02:42:06,351 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-14 02:42:06,351 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-14 02:42:06,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 02:42:06,352 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-14 02:42:06,352 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-14 02:42:06,352 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-14 02:42:06,352 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-14 02:42:06,352 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2024-11-14 02:42:06,352 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2024-11-14 02:42:06,352 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-14 02:42:06,352 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-14 02:42:06,352 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-14 02:42:06,352 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-14 02:42:06,352 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-14 02:42:06,352 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-14 02:42:06,352 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-14 02:42:06,353 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-14 02:42:06,353 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-14 02:42:06,353 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-14 02:42:06,353 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-14 02:42:06,353 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-14 02:42:06,353 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-14 02:42:06,353 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-14 02:42:06,353 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-14 02:42:06,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-14 02:42:06,353 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-14 02:42:06,353 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-14 02:42:06,353 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-14 02:42:06,354 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-14 02:42:06,354 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-14 02:42:06,354 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-14 02:42:06,354 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-14 02:42:06,354 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-14 02:42:06,354 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-14 02:42:06,354 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-14 02:42:06,354 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-14 02:42:06,354 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-14 02:42:06,354 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-14 02:42:06,354 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-14 02:42:06,354 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-14 02:42:06,354 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-14 02:42:06,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 02:42:06,355 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-14 02:42:06,355 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-14 02:42:06,355 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-14 02:42:06,355 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-14 02:42:06,355 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-14 02:42:06,355 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-14 02:42:06,355 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-14 02:42:06,355 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-14 02:42:06,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 02:42:06,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 02:42:06,355 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-14 02:42:06,355 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-14 02:42:06,568 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 02:42:06,572 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 02:42:08,270 INFO L? ?]: Removed 472 outVars from TransFormulas that were not future-live. [2024-11-14 02:42:08,270 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 02:42:09,417 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 02:42:09,417 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-14 02:42:09,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:42:09 BoogieIcfgContainer [2024-11-14 02:42:09,418 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 02:42:09,423 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 02:42:09,423 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 02:42:09,432 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 02:42:09,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 02:42:05" (1/3) ... [2024-11-14 02:42:09,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5e3e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:42:09, skipping insertion in model container [2024-11-14 02:42:09,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (2/3) ... [2024-11-14 02:42:09,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5e3e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:42:09, skipping insertion in model container [2024-11-14 02:42:09,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:42:09" (3/3) ... [2024-11-14 02:42:09,435 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product29.cil.c [2024-11-14 02:42:09,453 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 02:42:09,458 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec13_product29.cil.c that has 26 procedures, 409 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-14 02:42:09,545 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 02:42:09,561 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;@1a1b478c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 02:42:09,562 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 02:42:09,568 INFO L276 IsEmpty]: Start isEmpty. Operand has 409 states, 282 states have (on average 1.599290780141844) internal successors, (451), 300 states have internal predecessors, (451), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-14 02:42:09,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-14 02:42:09,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:09,607 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:09,607 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:09,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:09,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1343409744, now seen corresponding path program 1 times [2024-11-14 02:42:09,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:09,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179678295] [2024-11-14 02:42:09,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:09,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:11,004 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 02:42:11,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:11,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179678295] [2024-11-14 02:42:11,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179678295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:11,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:11,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 02:42:11,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410381704] [2024-11-14 02:42:11,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:11,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 02:42:11,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:11,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 02:42:11,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:42:11,051 INFO L87 Difference]: Start difference. First operand has 409 states, 282 states have (on average 1.599290780141844) internal successors, (451), 300 states have internal predecessors, (451), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-14 02:42:12,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:12,018 INFO L93 Difference]: Finished difference Result 1204 states and 1950 transitions. [2024-11-14 02:42:12,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 02:42:12,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 82 [2024-11-14 02:42:12,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:12,044 INFO L225 Difference]: With dead ends: 1204 [2024-11-14 02:42:12,044 INFO L226 Difference]: Without dead ends: 800 [2024-11-14 02:42:12,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-14 02:42:12,056 INFO L432 NwaCegarLoop]: 758 mSDtfsCounter, 762 mSDsluCounter, 3510 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 4268 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:12,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 4268 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 02:42:12,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2024-11-14 02:42:12,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 784. [2024-11-14 02:42:12,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 549 states have (on average 1.5810564663023678) internal successors, (868), 576 states have internal predecessors, (868), 188 states have call successors, (188), 47 states have call predecessors, (188), 46 states have return successors, (193), 185 states have call predecessors, (193), 184 states have call successors, (193) [2024-11-14 02:42:12,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1249 transitions. [2024-11-14 02:42:12,265 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1249 transitions. Word has length 82 [2024-11-14 02:42:12,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:12,267 INFO L471 AbstractCegarLoop]: Abstraction has 784 states and 1249 transitions. [2024-11-14 02:42:12,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-14 02:42:12,267 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1249 transitions. [2024-11-14 02:42:12,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-14 02:42:12,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:12,279 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:12,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 02:42:12,280 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:12,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:12,283 INFO L85 PathProgramCache]: Analyzing trace with hash 262104775, now seen corresponding path program 1 times [2024-11-14 02:42:12,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:12,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419380388] [2024-11-14 02:42:12,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:12,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:12,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 02:42:12,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:12,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419380388] [2024-11-14 02:42:12,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419380388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:12,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:12,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 02:42:12,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899851933] [2024-11-14 02:42:12,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:12,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 02:42:12,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:12,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 02:42:12,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:42:12,967 INFO L87 Difference]: Start difference. First operand 784 states and 1249 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-14 02:42:13,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:13,451 INFO L93 Difference]: Finished difference Result 1193 states and 1904 transitions. [2024-11-14 02:42:13,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:42:13,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 87 [2024-11-14 02:42:13,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:13,466 INFO L225 Difference]: With dead ends: 1193 [2024-11-14 02:42:13,466 INFO L226 Difference]: Without dead ends: 803 [2024-11-14 02:42:13,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:42:13,474 INFO L432 NwaCegarLoop]: 601 mSDtfsCounter, 0 mSDsluCounter, 2976 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3577 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:13,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3577 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 02:42:13,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2024-11-14 02:42:13,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 798. [2024-11-14 02:42:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 559 states have (on average 1.5706618962432917) internal successors, (878), 586 states have internal predecessors, (878), 188 states have call successors, (188), 47 states have call predecessors, (188), 50 states have return successors, (203), 189 states have call predecessors, (203), 184 states have call successors, (203) [2024-11-14 02:42:13,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1269 transitions. [2024-11-14 02:42:13,560 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1269 transitions. Word has length 87 [2024-11-14 02:42:13,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:13,561 INFO L471 AbstractCegarLoop]: Abstraction has 798 states and 1269 transitions. [2024-11-14 02:42:13,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-14 02:42:13,562 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1269 transitions. [2024-11-14 02:42:13,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-14 02:42:13,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:13,573 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:13,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 02:42:13,573 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:13,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:13,574 INFO L85 PathProgramCache]: Analyzing trace with hash -566629587, now seen corresponding path program 1 times [2024-11-14 02:42:13,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:13,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899348536] [2024-11-14 02:42:13,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:13,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 02:42:14,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:14,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899348536] [2024-11-14 02:42:14,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899348536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:14,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:14,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 02:42:14,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198941507] [2024-11-14 02:42:14,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:14,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 02:42:14,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:14,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 02:42:14,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:42:14,110 INFO L87 Difference]: Start difference. First operand 798 states and 1269 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-14 02:42:14,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:14,472 INFO L93 Difference]: Finished difference Result 1210 states and 1926 transitions. [2024-11-14 02:42:14,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:42:14,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 86 [2024-11-14 02:42:14,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:14,482 INFO L225 Difference]: With dead ends: 1210 [2024-11-14 02:42:14,487 INFO L226 Difference]: Without dead ends: 813 [2024-11-14 02:42:14,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:42:14,495 INFO L432 NwaCegarLoop]: 598 mSDtfsCounter, 0 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3564 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:14,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3564 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 02:42:14,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2024-11-14 02:42:14,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 800. [2024-11-14 02:42:14,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 561 states have (on average 1.5686274509803921) internal successors, (880), 586 states have internal predecessors, (880), 188 states have call successors, (188), 47 states have call predecessors, (188), 50 states have return successors, (203), 191 states have call predecessors, (203), 184 states have call successors, (203) [2024-11-14 02:42:14,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1271 transitions. [2024-11-14 02:42:14,622 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1271 transitions. Word has length 86 [2024-11-14 02:42:14,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:14,622 INFO L471 AbstractCegarLoop]: Abstraction has 800 states and 1271 transitions. [2024-11-14 02:42:14,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-14 02:42:14,623 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1271 transitions. [2024-11-14 02:42:14,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-14 02:42:14,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:14,628 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:14,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 02:42:14,628 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:14,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:14,630 INFO L85 PathProgramCache]: Analyzing trace with hash 936066279, now seen corresponding path program 1 times [2024-11-14 02:42:14,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:14,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478391694] [2024-11-14 02:42:14,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:14,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:15,071 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 02:42:15,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:15,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478391694] [2024-11-14 02:42:15,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478391694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:15,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:15,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 02:42:15,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906014297] [2024-11-14 02:42:15,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:15,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 02:42:15,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:15,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 02:42:15,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:42:15,073 INFO L87 Difference]: Start difference. First operand 800 states and 1271 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-14 02:42:15,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:15,520 INFO L93 Difference]: Finished difference Result 1213 states and 1929 transitions. [2024-11-14 02:42:15,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:42:15,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 87 [2024-11-14 02:42:15,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:15,528 INFO L225 Difference]: With dead ends: 1213 [2024-11-14 02:42:15,528 INFO L226 Difference]: Without dead ends: 815 [2024-11-14 02:42:15,531 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:42:15,532 INFO L432 NwaCegarLoop]: 601 mSDtfsCounter, 0 mSDsluCounter, 2976 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3577 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:15,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3577 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 02:42:15,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2024-11-14 02:42:15,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 802. [2024-11-14 02:42:15,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 563 states have (on average 1.566607460035524) internal successors, (882), 586 states have internal predecessors, (882), 188 states have call successors, (188), 47 states have call predecessors, (188), 50 states have return successors, (203), 193 states have call predecessors, (203), 184 states have call successors, (203) [2024-11-14 02:42:15,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1273 transitions. [2024-11-14 02:42:15,597 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1273 transitions. Word has length 87 [2024-11-14 02:42:15,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:15,597 INFO L471 AbstractCegarLoop]: Abstraction has 802 states and 1273 transitions. [2024-11-14 02:42:15,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-14 02:42:15,598 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1273 transitions. [2024-11-14 02:42:15,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-14 02:42:15,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:15,604 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:15,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 02:42:15,605 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:15,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:15,608 INFO L85 PathProgramCache]: Analyzing trace with hash 959371343, now seen corresponding path program 1 times [2024-11-14 02:42:15,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:15,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167964310] [2024-11-14 02:42:15,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:15,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 02:42:15,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:15,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167964310] [2024-11-14 02:42:15,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167964310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:15,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:15,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:42:15,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657000922] [2024-11-14 02:42:15,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:15,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:42:15,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:15,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:42:15,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:42:15,917 INFO L87 Difference]: Start difference. First operand 802 states and 1273 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-14 02:42:17,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:17,448 INFO L93 Difference]: Finished difference Result 1719 states and 2740 transitions. [2024-11-14 02:42:17,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:42:17,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 91 [2024-11-14 02:42:17,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:17,460 INFO L225 Difference]: With dead ends: 1719 [2024-11-14 02:42:17,460 INFO L226 Difference]: Without dead ends: 1199 [2024-11-14 02:42:17,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:42:17,467 INFO L432 NwaCegarLoop]: 1073 mSDtfsCounter, 1142 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:17,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1940 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 02:42:17,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2024-11-14 02:42:17,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1180. [2024-11-14 02:42:17,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 819 states have (on average 1.5189255189255189) internal successors, (1244), 853 states have internal predecessors, (1244), 278 states have call successors, (278), 76 states have call predecessors, (278), 82 states have return successors, (318), 288 states have call predecessors, (318), 273 states have call successors, (318) [2024-11-14 02:42:17,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1840 transitions. [2024-11-14 02:42:17,563 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1840 transitions. Word has length 91 [2024-11-14 02:42:17,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:17,563 INFO L471 AbstractCegarLoop]: Abstraction has 1180 states and 1840 transitions. [2024-11-14 02:42:17,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-14 02:42:17,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1840 transitions. [2024-11-14 02:42:17,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-14 02:42:17,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:17,567 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:17,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 02:42:17,568 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:17,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:17,568 INFO L85 PathProgramCache]: Analyzing trace with hash 216302917, now seen corresponding path program 1 times [2024-11-14 02:42:17,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:17,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978423805] [2024-11-14 02:42:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:17,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:17,797 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 02:42:17,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:17,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978423805] [2024-11-14 02:42:17,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978423805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:17,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:17,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:42:17,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566241790] [2024-11-14 02:42:17,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:17,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:42:17,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:17,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:42:17,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:42:17,799 INFO L87 Difference]: Start difference. First operand 1180 states and 1840 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-14 02:42:19,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:19,238 INFO L93 Difference]: Finished difference Result 4569 states and 7416 transitions. [2024-11-14 02:42:19,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:42:19,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 94 [2024-11-14 02:42:19,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:19,274 INFO L225 Difference]: With dead ends: 4569 [2024-11-14 02:42:19,275 INFO L226 Difference]: Without dead ends: 3404 [2024-11-14 02:42:19,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:42:19,290 INFO L432 NwaCegarLoop]: 1225 mSDtfsCounter, 1187 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:19,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 2485 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 02:42:19,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2024-11-14 02:42:19,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 2940. [2024-11-14 02:42:19,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2940 states, 2108 states have (on average 1.5033206831119545) internal successors, (3169), 2166 states have internal predecessors, (3169), 617 states have call successors, (617), 194 states have call predecessors, (617), 214 states have return successors, (885), 637 states have call predecessors, (885), 606 states have call successors, (885) [2024-11-14 02:42:19,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 4671 transitions. [2024-11-14 02:42:19,558 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 4671 transitions. Word has length 94 [2024-11-14 02:42:19,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:19,558 INFO L471 AbstractCegarLoop]: Abstraction has 2940 states and 4671 transitions. [2024-11-14 02:42:19,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-14 02:42:19,558 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 4671 transitions. [2024-11-14 02:42:19,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-14 02:42:19,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:19,562 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:19,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 02:42:19,563 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:19,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:19,563 INFO L85 PathProgramCache]: Analyzing trace with hash -497958268, now seen corresponding path program 1 times [2024-11-14 02:42:19,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:19,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630695154] [2024-11-14 02:42:19,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:19,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:19,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 02:42:19,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:19,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630695154] [2024-11-14 02:42:19,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630695154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:19,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:19,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:42:19,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433430542] [2024-11-14 02:42:19,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:19,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:42:19,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:19,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:42:19,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:42:19,893 INFO L87 Difference]: Start difference. First operand 2940 states and 4671 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-14 02:42:20,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:20,803 INFO L93 Difference]: Finished difference Result 5060 states and 8073 transitions. [2024-11-14 02:42:20,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:42:20,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 96 [2024-11-14 02:42:20,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:20,827 INFO L225 Difference]: With dead ends: 5060 [2024-11-14 02:42:20,827 INFO L226 Difference]: Without dead ends: 2980 [2024-11-14 02:42:20,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:42:20,844 INFO L432 NwaCegarLoop]: 760 mSDtfsCounter, 519 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:20,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 2668 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 02:42:20,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2024-11-14 02:42:21,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 2955. [2024-11-14 02:42:21,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2117 states have (on average 1.5011809163911196) internal successors, (3178), 2178 states have internal predecessors, (3178), 620 states have call successors, (620), 197 states have call predecessors, (620), 217 states have return successors, (894), 637 states have call predecessors, (894), 609 states have call successors, (894) [2024-11-14 02:42:21,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 4692 transitions. [2024-11-14 02:42:21,078 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 4692 transitions. Word has length 96 [2024-11-14 02:42:21,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:21,079 INFO L471 AbstractCegarLoop]: Abstraction has 2955 states and 4692 transitions. [2024-11-14 02:42:21,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-14 02:42:21,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 4692 transitions. [2024-11-14 02:42:21,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-14 02:42:21,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:21,083 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:21,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 02:42:21,083 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:21,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:21,084 INFO L85 PathProgramCache]: Analyzing trace with hash 906476403, now seen corresponding path program 1 times [2024-11-14 02:42:21,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:21,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386409724] [2024-11-14 02:42:21,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:21,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-14 02:42:21,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:21,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386409724] [2024-11-14 02:42:21,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386409724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:21,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:21,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:42:21,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967977552] [2024-11-14 02:42:21,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:21,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:42:21,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:21,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:42:21,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:42:21,262 INFO L87 Difference]: Start difference. First operand 2955 states and 4692 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-14 02:42:21,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:21,707 INFO L93 Difference]: Finished difference Result 5638 states and 9256 transitions. [2024-11-14 02:42:21,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:42:21,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 100 [2024-11-14 02:42:21,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:21,733 INFO L225 Difference]: With dead ends: 5638 [2024-11-14 02:42:21,733 INFO L226 Difference]: Without dead ends: 3309 [2024-11-14 02:42:21,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:42:21,755 INFO L432 NwaCegarLoop]: 642 mSDtfsCounter, 206 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:21,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1638 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:42:21,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3309 states. [2024-11-14 02:42:21,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3309 to 3269. [2024-11-14 02:42:22,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3269 states, 2411 states have (on average 1.5055993363749482) internal successors, (3630), 2492 states have internal predecessors, (3630), 620 states have call successors, (620), 197 states have call predecessors, (620), 237 states have return successors, (969), 637 states have call predecessors, (969), 609 states have call successors, (969) [2024-11-14 02:42:22,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3269 states to 3269 states and 5219 transitions. [2024-11-14 02:42:22,040 INFO L78 Accepts]: Start accepts. Automaton has 3269 states and 5219 transitions. Word has length 100 [2024-11-14 02:42:22,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:22,042 INFO L471 AbstractCegarLoop]: Abstraction has 3269 states and 5219 transitions. [2024-11-14 02:42:22,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-14 02:42:22,042 INFO L276 IsEmpty]: Start isEmpty. Operand 3269 states and 5219 transitions. [2024-11-14 02:42:22,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-14 02:42:22,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:22,048 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:22,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 02:42:22,048 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:22,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:22,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1086450313, now seen corresponding path program 1 times [2024-11-14 02:42:22,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:22,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301730729] [2024-11-14 02:42:22,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:22,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 02:42:22,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:22,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301730729] [2024-11-14 02:42:22,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301730729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:42:22,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639356377] [2024-11-14 02:42:22,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:22,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:22,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:22,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:42:22,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 02:42:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:22,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 02:42:22,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:22,767 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 02:42:22,769 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:42:22,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639356377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:22,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:42:22,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-14 02:42:22,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960521277] [2024-11-14 02:42:22,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:22,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:42:22,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:22,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:42:22,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:42:22,772 INFO L87 Difference]: Start difference. First operand 3269 states and 5219 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-14 02:42:23,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:23,164 INFO L93 Difference]: Finished difference Result 6577 states and 10674 transitions. [2024-11-14 02:42:23,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:42:23,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 99 [2024-11-14 02:42:23,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:23,199 INFO L225 Difference]: With dead ends: 6577 [2024-11-14 02:42:23,199 INFO L226 Difference]: Without dead ends: 3323 [2024-11-14 02:42:23,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:42:23,237 INFO L432 NwaCegarLoop]: 594 mSDtfsCounter, 26 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:23,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1748 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:42:23,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2024-11-14 02:42:23,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3323. [2024-11-14 02:42:23,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3323 states, 2456 states have (on average 1.5) internal successors, (3684), 2537 states have internal predecessors, (3684), 620 states have call successors, (620), 206 states have call predecessors, (620), 246 states have return successors, (969), 637 states have call predecessors, (969), 609 states have call successors, (969) [2024-11-14 02:42:23,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3323 states to 3323 states and 5273 transitions. [2024-11-14 02:42:23,525 INFO L78 Accepts]: Start accepts. Automaton has 3323 states and 5273 transitions. Word has length 99 [2024-11-14 02:42:23,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:23,526 INFO L471 AbstractCegarLoop]: Abstraction has 3323 states and 5273 transitions. [2024-11-14 02:42:23,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-14 02:42:23,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3323 states and 5273 transitions. [2024-11-14 02:42:23,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-14 02:42:23,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:23,531 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:23,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 02:42:23,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:23,736 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:23,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:23,737 INFO L85 PathProgramCache]: Analyzing trace with hash -299305986, now seen corresponding path program 1 times [2024-11-14 02:42:23,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:23,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905234035] [2024-11-14 02:42:23,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:23,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:23,992 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 02:42:23,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:23,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905234035] [2024-11-14 02:42:23,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905234035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:42:23,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056594137] [2024-11-14 02:42:23,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:23,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:23,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:23,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:42:23,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 02:42:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:24,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 02:42:24,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:24,504 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 02:42:24,504 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:42:24,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056594137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:24,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:42:24,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-14 02:42:24,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943824721] [2024-11-14 02:42:24,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:24,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:42:24,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:24,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:42:24,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:42:24,507 INFO L87 Difference]: Start difference. First operand 3323 states and 5273 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-14 02:42:24,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:24,917 INFO L93 Difference]: Finished difference Result 6658 states and 10696 transitions. [2024-11-14 02:42:24,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:42:24,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 101 [2024-11-14 02:42:24,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:24,950 INFO L225 Difference]: With dead ends: 6658 [2024-11-14 02:42:24,950 INFO L226 Difference]: Without dead ends: 3314 [2024-11-14 02:42:24,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:42:24,972 INFO L432 NwaCegarLoop]: 593 mSDtfsCounter, 32 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:24,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1744 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:42:24,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3314 states. [2024-11-14 02:42:25,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3314 to 3314. [2024-11-14 02:42:25,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3314 states, 2447 states have (on average 1.4908050674295055) internal successors, (3648), 2528 states have internal predecessors, (3648), 620 states have call successors, (620), 206 states have call predecessors, (620), 246 states have return successors, (969), 637 states have call predecessors, (969), 609 states have call successors, (969) [2024-11-14 02:42:25,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3314 states to 3314 states and 5237 transitions. [2024-11-14 02:42:25,202 INFO L78 Accepts]: Start accepts. Automaton has 3314 states and 5237 transitions. Word has length 101 [2024-11-14 02:42:25,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:25,203 INFO L471 AbstractCegarLoop]: Abstraction has 3314 states and 5237 transitions. [2024-11-14 02:42:25,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-14 02:42:25,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3314 states and 5237 transitions. [2024-11-14 02:42:25,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-14 02:42:25,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:25,208 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:25,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 02:42:25,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-14 02:42:25,413 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:25,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:25,413 INFO L85 PathProgramCache]: Analyzing trace with hash -314487190, now seen corresponding path program 1 times [2024-11-14 02:42:25,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:25,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059316691] [2024-11-14 02:42:25,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:25,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:25,675 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 02:42:25,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:25,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059316691] [2024-11-14 02:42:25,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059316691] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:42:25,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457985170] [2024-11-14 02:42:25,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:25,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:25,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:25,678 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:42:25,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 02:42:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:26,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 02:42:26,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:26,273 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 02:42:26,273 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:42:26,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457985170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:26,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:42:26,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-14 02:42:26,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154821750] [2024-11-14 02:42:26,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:26,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:42:26,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:26,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:42:26,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:42:26,275 INFO L87 Difference]: Start difference. First operand 3314 states and 5237 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-14 02:42:27,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:27,794 INFO L93 Difference]: Finished difference Result 8460 states and 14085 transitions. [2024-11-14 02:42:27,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:42:27,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 102 [2024-11-14 02:42:27,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:27,853 INFO L225 Difference]: With dead ends: 8460 [2024-11-14 02:42:27,854 INFO L226 Difference]: Without dead ends: 5161 [2024-11-14 02:42:27,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:42:27,884 INFO L432 NwaCegarLoop]: 667 mSDtfsCounter, 610 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:27,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 1869 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 02:42:27,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5161 states. [2024-11-14 02:42:28,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5161 to 5070. [2024-11-14 02:42:28,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5070 states, 3732 states have (on average 1.4603429796355842) internal successors, (5450), 3868 states have internal predecessors, (5450), 956 states have call successors, (956), 324 states have call predecessors, (956), 381 states have return successors, (1765), 971 states have call predecessors, (1765), 939 states have call successors, (1765) [2024-11-14 02:42:28,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5070 states to 5070 states and 8171 transitions. [2024-11-14 02:42:28,271 INFO L78 Accepts]: Start accepts. Automaton has 5070 states and 8171 transitions. Word has length 102 [2024-11-14 02:42:28,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:28,272 INFO L471 AbstractCegarLoop]: Abstraction has 5070 states and 8171 transitions. [2024-11-14 02:42:28,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-14 02:42:28,275 INFO L276 IsEmpty]: Start isEmpty. Operand 5070 states and 8171 transitions. [2024-11-14 02:42:28,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-14 02:42:28,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:28,279 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 02:42:28,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 02:42:28,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:28,480 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:28,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:28,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1162290232, now seen corresponding path program 1 times [2024-11-14 02:42:28,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:28,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186633917] [2024-11-14 02:42:28,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:28,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:28,761 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 02:42:28,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:28,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186633917] [2024-11-14 02:42:28,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186633917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:42:28,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836440881] [2024-11-14 02:42:28,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:28,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:28,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:28,765 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:42:28,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 02:42:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:29,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 02:42:29,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 02:42:29,531 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:42:29,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836440881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:29,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:42:29,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-14 02:42:29,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901009047] [2024-11-14 02:42:29,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:29,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:42:29,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:29,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:42:29,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-14 02:42:29,536 INFO L87 Difference]: Start difference. First operand 5070 states and 8171 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-14 02:42:30,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:30,869 INFO L93 Difference]: Finished difference Result 11193 states and 18504 transitions. [2024-11-14 02:42:30,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 02:42:30,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 104 [2024-11-14 02:42:30,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:30,927 INFO L225 Difference]: With dead ends: 11193 [2024-11-14 02:42:30,928 INFO L226 Difference]: Without dead ends: 6138 [2024-11-14 02:42:31,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-14 02:42:31,015 INFO L432 NwaCegarLoop]: 806 mSDtfsCounter, 684 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:31,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 3127 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 02:42:31,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6138 states. [2024-11-14 02:42:31,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6138 to 6114. [2024-11-14 02:42:31,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6114 states, 4511 states have (on average 1.4431389935712702) internal successors, (6510), 4659 states have internal predecessors, (6510), 1095 states have call successors, (1095), 449 states have call predecessors, (1095), 507 states have return successors, (2641), 1099 states have call predecessors, (2641), 1066 states have call successors, (2641) [2024-11-14 02:42:31,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6114 states to 6114 states and 10246 transitions. [2024-11-14 02:42:31,445 INFO L78 Accepts]: Start accepts. Automaton has 6114 states and 10246 transitions. Word has length 104 [2024-11-14 02:42:31,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:31,446 INFO L471 AbstractCegarLoop]: Abstraction has 6114 states and 10246 transitions. [2024-11-14 02:42:31,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-14 02:42:31,446 INFO L276 IsEmpty]: Start isEmpty. Operand 6114 states and 10246 transitions. [2024-11-14 02:42:31,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-14 02:42:31,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:31,451 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 02:42:31,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 02:42:31,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-14 02:42:31,652 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:31,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:31,652 INFO L85 PathProgramCache]: Analyzing trace with hash -720136544, now seen corresponding path program 1 times [2024-11-14 02:42:31,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:31,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684665804] [2024-11-14 02:42:31,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:31,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:31,931 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 02:42:31,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:31,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684665804] [2024-11-14 02:42:31,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684665804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:42:31,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442854468] [2024-11-14 02:42:31,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:31,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:31,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:31,934 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:42:31,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 02:42:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:32,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 1328 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 02:42:32,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:32,434 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 02:42:32,434 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:42:32,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442854468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:32,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:42:32,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-14 02:42:32,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394705530] [2024-11-14 02:42:32,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:32,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:42:32,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:32,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:42:32,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:42:32,437 INFO L87 Difference]: Start difference. First operand 6114 states and 10246 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-14 02:42:33,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:33,078 INFO L93 Difference]: Finished difference Result 12305 states and 21203 transitions. [2024-11-14 02:42:33,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:42:33,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 103 [2024-11-14 02:42:33,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:33,147 INFO L225 Difference]: With dead ends: 12305 [2024-11-14 02:42:33,147 INFO L226 Difference]: Without dead ends: 6214 [2024-11-14 02:42:33,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:42:33,210 INFO L432 NwaCegarLoop]: 601 mSDtfsCounter, 0 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:33,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2389 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:42:33,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6214 states. [2024-11-14 02:42:33,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6214 to 6178. [2024-11-14 02:42:33,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6178 states, 4558 states have (on average 1.4385695480473892) internal successors, (6557), 4708 states have internal predecessors, (6557), 1095 states have call successors, (1095), 449 states have call predecessors, (1095), 524 states have return successors, (2663), 1114 states have call predecessors, (2663), 1066 states have call successors, (2663) [2024-11-14 02:42:33,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6178 states to 6178 states and 10315 transitions. [2024-11-14 02:42:33,711 INFO L78 Accepts]: Start accepts. Automaton has 6178 states and 10315 transitions. Word has length 103 [2024-11-14 02:42:33,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:33,713 INFO L471 AbstractCegarLoop]: Abstraction has 6178 states and 10315 transitions. [2024-11-14 02:42:33,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-14 02:42:33,714 INFO L276 IsEmpty]: Start isEmpty. Operand 6178 states and 10315 transitions. [2024-11-14 02:42:33,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-14 02:42:33,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:33,719 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:33,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 02:42:33,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-14 02:42:33,920 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:33,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:33,924 INFO L85 PathProgramCache]: Analyzing trace with hash 333958179, now seen corresponding path program 1 times [2024-11-14 02:42:33,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:33,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920671014] [2024-11-14 02:42:33,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:33,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 02:42:34,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:34,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920671014] [2024-11-14 02:42:34,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920671014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:42:34,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57900678] [2024-11-14 02:42:34,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:34,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:34,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:34,132 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:42:34,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 02:42:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:34,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 02:42:34,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:34,609 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 02:42:34,609 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:42:34,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57900678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:34,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:42:34,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-14 02:42:34,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786460730] [2024-11-14 02:42:34,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:34,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:42:34,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:34,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:42:34,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:42:34,610 INFO L87 Difference]: Start difference. First operand 6178 states and 10315 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-14 02:42:35,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:35,414 INFO L93 Difference]: Finished difference Result 12692 states and 21949 transitions. [2024-11-14 02:42:35,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:42:35,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 105 [2024-11-14 02:42:35,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:35,476 INFO L225 Difference]: With dead ends: 12692 [2024-11-14 02:42:35,477 INFO L226 Difference]: Without dead ends: 6538 [2024-11-14 02:42:35,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:42:35,546 INFO L432 NwaCegarLoop]: 589 mSDtfsCounter, 16 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:35,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1642 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 02:42:35,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6538 states. [2024-11-14 02:42:36,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6538 to 6488. [2024-11-14 02:42:36,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6488 states, 4857 states have (on average 1.4486308420835907) internal successors, (7036), 5018 states have internal predecessors, (7036), 1095 states have call successors, (1095), 449 states have call predecessors, (1095), 535 states have return successors, (2674), 1114 states have call predecessors, (2674), 1066 states have call successors, (2674) [2024-11-14 02:42:36,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6488 states to 6488 states and 10805 transitions. [2024-11-14 02:42:36,184 INFO L78 Accepts]: Start accepts. Automaton has 6488 states and 10805 transitions. Word has length 105 [2024-11-14 02:42:36,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:36,185 INFO L471 AbstractCegarLoop]: Abstraction has 6488 states and 10805 transitions. [2024-11-14 02:42:36,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-14 02:42:36,186 INFO L276 IsEmpty]: Start isEmpty. Operand 6488 states and 10805 transitions. [2024-11-14 02:42:36,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-14 02:42:36,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:36,193 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 02:42:36,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 02:42:36,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-14 02:42:36,394 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:36,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:36,395 INFO L85 PathProgramCache]: Analyzing trace with hash 871829633, now seen corresponding path program 1 times [2024-11-14 02:42:36,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:36,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234327383] [2024-11-14 02:42:36,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:36,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 02:42:37,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:37,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234327383] [2024-11-14 02:42:37,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234327383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:42:37,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391014102] [2024-11-14 02:42:37,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:37,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:37,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:37,068 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:42:37,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 02:42:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:37,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 02:42:37,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 02:42:37,648 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:42:37,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391014102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:37,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:42:37,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-14 02:42:37,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921984433] [2024-11-14 02:42:37,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:37,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:42:37,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:37,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:42:37,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-14 02:42:37,650 INFO L87 Difference]: Start difference. First operand 6488 states and 10805 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-14 02:42:39,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:39,775 INFO L93 Difference]: Finished difference Result 16615 states and 30344 transitions. [2024-11-14 02:42:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:42:39,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 108 [2024-11-14 02:42:39,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:39,902 INFO L225 Difference]: With dead ends: 16615 [2024-11-14 02:42:39,902 INFO L226 Difference]: Without dead ends: 11148 [2024-11-14 02:42:40,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-14 02:42:40,029 INFO L432 NwaCegarLoop]: 693 mSDtfsCounter, 622 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:40,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 1920 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 02:42:40,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11148 states. [2024-11-14 02:42:40,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11148 to 10742. [2024-11-14 02:42:40,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10742 states, 8018 states have (on average 1.4483661761037665) internal successors, (11613), 8278 states have internal predecessors, (11613), 1847 states have call successors, (1847), 773 states have call predecessors, (1847), 876 states have return successors, (5753), 1856 states have call predecessors, (5753), 1794 states have call successors, (5753) [2024-11-14 02:42:41,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10742 states to 10742 states and 19213 transitions. [2024-11-14 02:42:41,128 INFO L78 Accepts]: Start accepts. Automaton has 10742 states and 19213 transitions. Word has length 108 [2024-11-14 02:42:41,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:41,128 INFO L471 AbstractCegarLoop]: Abstraction has 10742 states and 19213 transitions. [2024-11-14 02:42:41,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-14 02:42:41,128 INFO L276 IsEmpty]: Start isEmpty. Operand 10742 states and 19213 transitions. [2024-11-14 02:42:41,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-14 02:42:41,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:41,136 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:41,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 02:42:41,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-14 02:42:41,336 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:41,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:41,337 INFO L85 PathProgramCache]: Analyzing trace with hash -215717749, now seen corresponding path program 1 times [2024-11-14 02:42:41,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:41,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566982603] [2024-11-14 02:42:41,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:41,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 02:42:41,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:41,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566982603] [2024-11-14 02:42:41,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566982603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:42:41,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128325122] [2024-11-14 02:42:41,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:41,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:41,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:41,503 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:42:41,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 02:42:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:41,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:42:41,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 02:42:41,946 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:42:41,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128325122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:41,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:42:41,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-14 02:42:41,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303892149] [2024-11-14 02:42:41,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:41,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:42:41,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:41,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:42:41,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:42:41,949 INFO L87 Difference]: Start difference. First operand 10742 states and 19213 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-14 02:42:42,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:42,928 INFO L93 Difference]: Finished difference Result 21834 states and 41337 transitions. [2024-11-14 02:42:42,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:42:42,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 108 [2024-11-14 02:42:42,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:43,015 INFO L225 Difference]: With dead ends: 21834 [2024-11-14 02:42:43,015 INFO L226 Difference]: Without dead ends: 11116 [2024-11-14 02:42:43,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:42:43,178 INFO L432 NwaCegarLoop]: 603 mSDtfsCounter, 4 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:43,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1771 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:42:43,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11116 states. [2024-11-14 02:42:43,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11116 to 10819. [2024-11-14 02:42:44,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10819 states, 8095 states have (on average 1.4338480543545398) internal successors, (11607), 8355 states have internal predecessors, (11607), 1847 states have call successors, (1847), 773 states have call predecessors, (1847), 876 states have return successors, (5735), 1856 states have call predecessors, (5735), 1794 states have call successors, (5735) [2024-11-14 02:42:44,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10819 states to 10819 states and 19189 transitions. [2024-11-14 02:42:44,229 INFO L78 Accepts]: Start accepts. Automaton has 10819 states and 19189 transitions. Word has length 108 [2024-11-14 02:42:44,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:44,230 INFO L471 AbstractCegarLoop]: Abstraction has 10819 states and 19189 transitions. [2024-11-14 02:42:44,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-14 02:42:44,230 INFO L276 IsEmpty]: Start isEmpty. Operand 10819 states and 19189 transitions. [2024-11-14 02:42:44,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-14 02:42:44,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:44,238 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 02:42:44,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-14 02:42:44,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-14 02:42:44,439 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:44,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:44,440 INFO L85 PathProgramCache]: Analyzing trace with hash 249266877, now seen corresponding path program 1 times [2024-11-14 02:42:44,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:44,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157059714] [2024-11-14 02:42:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:44,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 02:42:44,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:44,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157059714] [2024-11-14 02:42:44,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157059714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:42:44,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039303144] [2024-11-14 02:42:44,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:44,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:44,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:44,680 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:42:44,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 02:42:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:45,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 02:42:45,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:45,236 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 02:42:45,237 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:42:45,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039303144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:45,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:42:45,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-14 02:42:45,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833564999] [2024-11-14 02:42:45,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:45,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:42:45,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:45,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:42:45,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:42:45,242 INFO L87 Difference]: Start difference. First operand 10819 states and 19189 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-14 02:42:48,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:48,051 INFO L93 Difference]: Finished difference Result 25172 states and 48140 transitions. [2024-11-14 02:42:48,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:42:48,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 108 [2024-11-14 02:42:48,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:48,238 INFO L225 Difference]: With dead ends: 25172 [2024-11-14 02:42:48,238 INFO L226 Difference]: Without dead ends: 15386 [2024-11-14 02:42:48,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:42:48,529 INFO L432 NwaCegarLoop]: 698 mSDtfsCounter, 641 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1925 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:48,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1925 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 02:42:48,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15386 states. [2024-11-14 02:42:50,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15386 to 15000. [2024-11-14 02:42:50,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15000 states, 11187 states have (on average 1.4328238133547868) internal successors, (16029), 11550 states have internal predecessors, (16029), 2595 states have call successors, (2595), 1095 states have call predecessors, (2595), 1217 states have return successors, (9832), 2592 states have call predecessors, (9832), 2518 states have call successors, (9832) [2024-11-14 02:42:50,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15000 states to 15000 states and 28456 transitions. [2024-11-14 02:42:50,376 INFO L78 Accepts]: Start accepts. Automaton has 15000 states and 28456 transitions. Word has length 108 [2024-11-14 02:42:50,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:50,377 INFO L471 AbstractCegarLoop]: Abstraction has 15000 states and 28456 transitions. [2024-11-14 02:42:50,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-14 02:42:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 15000 states and 28456 transitions. [2024-11-14 02:42:50,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-14 02:42:50,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:50,384 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 02:42:50,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-14 02:42:50,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-14 02:42:50,585 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:50,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:50,585 INFO L85 PathProgramCache]: Analyzing trace with hash -247558857, now seen corresponding path program 1 times [2024-11-14 02:42:50,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:50,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213607861] [2024-11-14 02:42:50,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:50,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:50,791 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 02:42:50,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:50,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213607861] [2024-11-14 02:42:50,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213607861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:42:50,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776173782] [2024-11-14 02:42:50,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:50,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:50,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:50,794 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:42:50,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 02:42:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:51,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 02:42:51,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:51,372 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 02:42:51,373 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:42:51,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776173782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:51,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:42:51,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-14 02:42:51,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113515870] [2024-11-14 02:42:51,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:51,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:42:51,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:51,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:42:51,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:42:51,376 INFO L87 Difference]: Start difference. First operand 15000 states and 28456 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-14 02:42:54,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:54,179 INFO L93 Difference]: Finished difference Result 32863 states and 65636 transitions. [2024-11-14 02:42:54,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:42:54,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 110 [2024-11-14 02:42:54,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:54,631 INFO L225 Difference]: With dead ends: 32863 [2024-11-14 02:42:54,631 INFO L226 Difference]: Without dead ends: 18903 [2024-11-14 02:42:55,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:42:55,106 INFO L432 NwaCegarLoop]: 703 mSDtfsCounter, 641 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:55,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 2106 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 02:42:55,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18903 states. [2024-11-14 02:42:56,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18903 to 18132. [2024-11-14 02:42:56,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18132 states, 13373 states have (on average 1.432588050549615) internal successors, (19158), 13828 states have internal predecessors, (19158), 3267 states have call successors, (3267), 1369 states have call predecessors, (3267), 1491 states have return successors, (13513), 3244 states have call predecessors, (13513), 3172 states have call successors, (13513) [2024-11-14 02:42:57,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18132 states to 18132 states and 35938 transitions. [2024-11-14 02:42:57,601 INFO L78 Accepts]: Start accepts. Automaton has 18132 states and 35938 transitions. Word has length 110 [2024-11-14 02:42:57,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:57,602 INFO L471 AbstractCegarLoop]: Abstraction has 18132 states and 35938 transitions. [2024-11-14 02:42:57,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-14 02:42:57,602 INFO L276 IsEmpty]: Start isEmpty. Operand 18132 states and 35938 transitions. [2024-11-14 02:42:57,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-14 02:42:57,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:57,614 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:57,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-14 02:42:57,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-14 02:42:57,815 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:42:57,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:57,816 INFO L85 PathProgramCache]: Analyzing trace with hash -978354340, now seen corresponding path program 1 times [2024-11-14 02:42:57,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:57,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048201828] [2024-11-14 02:42:57,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:57,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-14 02:42:58,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:58,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048201828] [2024-11-14 02:42:58,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048201828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:42:58,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617965053] [2024-11-14 02:42:58,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:58,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:58,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:58,153 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:42:58,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 02:42:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:58,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 02:42:58,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 02:42:58,819 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:42:59,294 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 02:42:59,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617965053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:42:59,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1984491805] [2024-11-14 02:42:59,329 INFO L159 IcfgInterpreter]: Started Sifa with 97 locations of interest [2024-11-14 02:42:59,329 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:42:59,332 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:42:59,338 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:42:59,338 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:43:15,173 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 568 for LOIs [2024-11-14 02:43:19,300 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 433 for LOIs [2024-11-14 02:43:19,625 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 536 for LOIs [2024-11-14 02:43:27,533 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 618 for LOIs [2024-11-14 02:43:30,441 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 510 for LOIs [2024-11-14 02:43:31,755 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:43:46,760 WARN L286 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 510 DAG size of output: 507 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:43:56,865 WARN L286 SmtUtils]: Spent 9.14s on a formula simplification. DAG size of input: 544 DAG size of output: 514 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:44:21,319 WARN L286 SmtUtils]: Spent 14.71s on a formula simplification. DAG size of input: 618 DAG size of output: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:44:39,148 WARN L286 SmtUtils]: Spent 16.54s on a formula simplification. DAG size of input: 862 DAG size of output: 664 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:45:11,325 WARN L286 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 568 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:45:19,976 WARN L286 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:45:25,273 WARN L286 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 571 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:45:25,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1984491805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:45:25,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:45:25,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [5, 6, 7] total 33 [2024-11-14 02:45:25,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336201569] [2024-11-14 02:45:25,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:45:25,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 02:45:25,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:45:25,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 02:45:25,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2024-11-14 02:45:25,279 INFO L87 Difference]: Start difference. First operand 18132 states and 35938 transitions. Second operand has 21 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 8 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-14 02:45:40,804 WARN L286 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 596 DAG size of output: 573 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:46:11,604 WARN L286 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 574 DAG size of output: 570 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:46:22,151 WARN L286 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 576 DAG size of output: 572 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:46:41,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:46:41,622 INFO L93 Difference]: Finished difference Result 36247 states and 71856 transitions. [2024-11-14 02:46:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-14 02:46:41,622 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 8 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 111 [2024-11-14 02:46:41,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:46:41,752 INFO L225 Difference]: With dead ends: 36247 [2024-11-14 02:46:41,752 INFO L226 Difference]: Without dead ends: 18138 [2024-11-14 02:46:41,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 169.2s TimeCoverageRelationStatistics Valid=262, Invalid=1718, Unknown=0, NotChecked=0, Total=1980 [2024-11-14 02:46:41,979 INFO L432 NwaCegarLoop]: 590 mSDtfsCounter, 8 mSDsluCounter, 3853 mSDsCounter, 0 mSdLazyCounter, 3869 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4443 SdHoareTripleChecker+Invalid, 3879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2024-11-14 02:46:41,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4443 Invalid, 3879 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 3869 Invalid, 0 Unknown, 0 Unchecked, 19.7s Time] [2024-11-14 02:46:41,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18138 states. [2024-11-14 02:46:43,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18138 to 18138. [2024-11-14 02:46:43,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18138 states, 13377 states have (on average 1.4324586977648202) internal successors, (19162), 13831 states have internal predecessors, (19162), 3267 states have call successors, (3267), 1371 states have call predecessors, (3267), 1493 states have return successors, (13513), 3245 states have call predecessors, (13513), 3172 states have call successors, (13513) [2024-11-14 02:46:43,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18138 states to 18138 states and 35942 transitions. [2024-11-14 02:46:43,517 INFO L78 Accepts]: Start accepts. Automaton has 18138 states and 35942 transitions. Word has length 111 [2024-11-14 02:46:43,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:46:43,518 INFO L471 AbstractCegarLoop]: Abstraction has 18138 states and 35942 transitions. [2024-11-14 02:46:43,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 8 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-14 02:46:43,518 INFO L276 IsEmpty]: Start isEmpty. Operand 18138 states and 35942 transitions. [2024-11-14 02:46:43,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-14 02:46:43,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:46:43,524 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:46:43,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 02:46:43,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:46:43,729 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:46:43,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:46:43,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1111258311, now seen corresponding path program 1 times [2024-11-14 02:46:43,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:46:43,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307055649] [2024-11-14 02:46:43,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:46:43,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:46:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:46:43,951 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 02:46:43,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:46:43,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307055649] [2024-11-14 02:46:43,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307055649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:46:43,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:46:43,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:46:43,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160277450] [2024-11-14 02:46:43,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:46:43,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:46:43,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:46:43,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:46:43,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:46:43,954 INFO L87 Difference]: Start difference. First operand 18138 states and 35942 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-14 02:46:45,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:46:45,852 INFO L93 Difference]: Finished difference Result 35756 states and 76005 transitions. [2024-11-14 02:46:45,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:46:45,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 112 [2024-11-14 02:46:45,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:46:46,042 INFO L225 Difference]: With dead ends: 35756 [2024-11-14 02:46:46,042 INFO L226 Difference]: Without dead ends: 18291 [2024-11-14 02:46:46,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:46:46,467 INFO L432 NwaCegarLoop]: 596 mSDtfsCounter, 0 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:46:46,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2380 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:46:46,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18291 states. [2024-11-14 02:46:47,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18291 to 18240. [2024-11-14 02:46:47,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18240 states, 13479 states have (on average 1.4291861414051488) internal successors, (19264), 13933 states have internal predecessors, (19264), 3267 states have call successors, (3267), 1371 states have call predecessors, (3267), 1493 states have return successors, (13513), 3245 states have call predecessors, (13513), 3172 states have call successors, (13513) [2024-11-14 02:46:48,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18240 states to 18240 states and 36044 transitions. [2024-11-14 02:46:48,196 INFO L78 Accepts]: Start accepts. Automaton has 18240 states and 36044 transitions. Word has length 112 [2024-11-14 02:46:48,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:46:48,196 INFO L471 AbstractCegarLoop]: Abstraction has 18240 states and 36044 transitions. [2024-11-14 02:46:48,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-14 02:46:48,196 INFO L276 IsEmpty]: Start isEmpty. Operand 18240 states and 36044 transitions. [2024-11-14 02:46:48,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-14 02:46:48,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:46:48,203 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:46:48,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-14 02:46:48,203 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:46:48,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:46:48,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1855091331, now seen corresponding path program 1 times [2024-11-14 02:46:48,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:46:48,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088455479] [2024-11-14 02:46:48,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:46:48,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:46:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:46:48,452 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 02:46:48,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:46:48,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088455479] [2024-11-14 02:46:48,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088455479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:46:48,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089090830] [2024-11-14 02:46:48,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:46:48,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:46:48,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:46:48,455 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:46:48,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 02:46:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:46:48,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 1345 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 02:46:48,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:46:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 02:46:49,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:46:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 02:46:49,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089090830] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:46:49,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1208914565] [2024-11-14 02:46:49,317 INFO L159 IcfgInterpreter]: Started Sifa with 101 locations of interest [2024-11-14 02:46:49,317 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:46:49,318 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:46:49,318 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:46:49,318 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:47:02,586 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 568 for LOIs [2024-11-14 02:47:15,578 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 441 for LOIs [2024-11-14 02:47:15,842 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 437 for LOIs [2024-11-14 02:47:16,034 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 435 for LOIs [2024-11-14 02:47:16,265 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 433 for LOIs [2024-11-14 02:47:16,468 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 536 for LOIs [2024-11-14 02:47:23,442 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 618 for LOIs [2024-11-14 02:47:26,193 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 510 for LOIs [2024-11-14 02:47:27,266 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:47:49,302 WARN L286 SmtUtils]: Spent 7.69s on a formula simplification. DAG size of input: 544 DAG size of output: 514 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:48:13,209 WARN L286 SmtUtils]: Spent 14.48s on a formula simplification. DAG size of input: 618 DAG size of output: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:48:30,462 WARN L286 SmtUtils]: Spent 16.21s on a formula simplification. DAG size of input: 862 DAG size of output: 664 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:49:02,450 WARN L286 SmtUtils]: Spent 5.00s on a formula simplification that was a NOOP. DAG size: 568 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:49:38,636 WARN L286 SmtUtils]: Spent 5.03s 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) [2024-11-14 02:49:44,028 WARN L286 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 569 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:49:56,456 WARN L286 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 571 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:50:01,939 WARN L286 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 571 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:50:07,411 WARN L286 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 571 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:50:12,928 WARN L286 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 571 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:50:18,317 WARN L286 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 569 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:50:25,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1208914565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:50:25,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:50:25,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [5, 6, 7] total 48 [2024-11-14 02:50:25,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900058888] [2024-11-14 02:50:25,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:50:25,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-14 02:50:25,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:50:25,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-14 02:50:25,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=2012, Unknown=0, NotChecked=0, Total=2256 [2024-11-14 02:50:25,713 INFO L87 Difference]: Start difference. First operand 18240 states and 36044 transitions. Second operand has 36 states, 24 states have (on average 3.0) internal successors, (72), 24 states have internal predecessors, (72), 11 states have call successors, (19), 9 states have call predecessors, (19), 7 states have return successors, (17), 9 states have call predecessors, (17), 10 states have call successors, (17) [2024-11-14 02:50:41,841 WARN L286 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 596 DAG size of output: 573 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:51:15,077 WARN L286 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 574 DAG size of output: 570 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:51:20,973 WARN L286 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 576 DAG size of output: 572 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:51:26,775 WARN L286 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 576 DAG size of output: 572 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:52:01,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:52:01,387 INFO L93 Difference]: Finished difference Result 36525 states and 72177 transitions. [2024-11-14 02:52:01,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-14 02:52:01,388 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 24 states have (on average 3.0) internal successors, (72), 24 states have internal predecessors, (72), 11 states have call successors, (19), 9 states have call predecessors, (19), 7 states have return successors, (17), 9 states have call predecessors, (17), 10 states have call successors, (17) Word has length 117 [2024-11-14 02:52:01,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:52:01,523 INFO L225 Difference]: With dead ends: 36525 [2024-11-14 02:52:01,523 INFO L226 Difference]: Without dead ends: 18311 [2024-11-14 02:52:01,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 237.5s TimeCoverageRelationStatistics Valid=352, Invalid=3188, Unknown=0, NotChecked=0, Total=3540 [2024-11-14 02:52:01,723 INFO L432 NwaCegarLoop]: 622 mSDtfsCounter, 50 mSDsluCounter, 6123 mSDsCounter, 0 mSdLazyCounter, 6563 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 6745 SdHoareTripleChecker+Invalid, 6586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 6563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:52:01,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 6745 Invalid, 6586 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 6563 Invalid, 0 Unknown, 0 Unchecked, 35.3s Time] [2024-11-14 02:52:01,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18311 states. [2024-11-14 02:52:02,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18311 to 18271. [2024-11-14 02:52:02,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18271 states, 13502 states have (on average 1.4285291067989927) internal successors, (19288), 13957 states have internal predecessors, (19288), 3271 states have call successors, (3271), 1374 states have call predecessors, (3271), 1497 states have return successors, (13520), 3249 states have call predecessors, (13520), 3176 states have call successors, (13520) [2024-11-14 02:52:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18271 states to 18271 states and 36079 transitions. [2024-11-14 02:52:03,132 INFO L78 Accepts]: Start accepts. Automaton has 18271 states and 36079 transitions. Word has length 117 [2024-11-14 02:52:03,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:52:03,132 INFO L471 AbstractCegarLoop]: Abstraction has 18271 states and 36079 transitions. [2024-11-14 02:52:03,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 24 states have (on average 3.0) internal successors, (72), 24 states have internal predecessors, (72), 11 states have call successors, (19), 9 states have call predecessors, (19), 7 states have return successors, (17), 9 states have call predecessors, (17), 10 states have call successors, (17) [2024-11-14 02:52:03,133 INFO L276 IsEmpty]: Start isEmpty. Operand 18271 states and 36079 transitions. [2024-11-14 02:52:03,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-14 02:52:03,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:52:03,136 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:52:03,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-14 02:52:03,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-14 02:52:03,336 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:52:03,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:52:03,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1465613827, now seen corresponding path program 1 times [2024-11-14 02:52:03,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:52:03,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689274045] [2024-11-14 02:52:03,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:52:03,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:52:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:52:03,514 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 02:52:03,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:52:03,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689274045] [2024-11-14 02:52:03,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689274045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:52:03,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812612786] [2024-11-14 02:52:03,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:52:03,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:52:03,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:52:03,517 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:52:03,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947548a0-0fd2-478d-b309-0dd3a1ef95bc/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 02:52:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:52:03,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 1344 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 02:52:03,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:52:04,094 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 02:52:04,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:52:04,333 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 02:52:04,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812612786] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:52:04,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1285387216] [2024-11-14 02:52:04,337 INFO L159 IcfgInterpreter]: Started Sifa with 100 locations of interest [2024-11-14 02:52:04,337 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:52:04,337 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:52:04,337 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:52:04,337 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs