./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product21.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_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/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_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/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_626a713c-8715-41d4-bc28-2b7c650756a3/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 bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:49:27,824 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:49:27,906 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:49:27,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:49:27,912 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:49:27,943 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:49:27,944 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:49:27,944 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:49:27,944 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:49:27,945 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:49:27,945 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:49:27,945 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:49:27,945 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:49:27,945 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:49:27,946 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:49:27,946 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:49:27,946 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:49:27,946 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:49:27,946 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:49:27,947 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:49:27,947 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:49:27,947 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:49:27,948 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:49:27,948 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:49:27,948 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:49:27,948 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:49:27,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:49:27,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:49:27,949 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:49:27,949 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:49:27,949 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:49:27,949 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:49:27,950 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:49:27,950 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:49:27,950 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:49:27,950 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:49:27,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:49:27,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:49:27,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:49:27,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:49:27,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:49:27,951 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:49:27,952 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:49:27,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:49:27,952 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:49:27,952 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:49:27,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:49:27,953 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_626a713c-8715-41d4-bc28-2b7c650756a3/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 -> bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece [2024-11-14 03:49:28,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:49:28,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:49:28,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:49:28,391 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:49:28,391 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:49:28,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c Unable to find full path for "g++" [2024-11-14 03:49:30,924 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:49:31,374 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:49:31,375 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2024-11-14 03:49:31,396 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/data/7f71b31fa/dfe0783d11e04384b6d2dbf09ac9771a/FLAG2ada90e8e [2024-11-14 03:49:31,416 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/data/7f71b31fa/dfe0783d11e04384b6d2dbf09ac9771a [2024-11-14 03:49:31,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:49:31,421 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:49:31,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:49:31,424 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:49:31,429 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:49:31,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:49:31" (1/1) ... [2024-11-14 03:49:31,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78e2e847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:31, skipping insertion in model container [2024-11-14 03:49:31,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:49:31" (1/1) ... [2024-11-14 03:49:31,533 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:49:32,402 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_626a713c-8715-41d4-bc28-2b7c650756a3/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2024-11-14 03:49:32,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:49:32,514 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:49:32,533 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2024-11-14 03:49:32,536 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [716] [2024-11-14 03:49:32,537 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [754] [2024-11-14 03:49:32,537 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [875] [2024-11-14 03:49:32,537 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1230] [2024-11-14 03:49:32,540 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2746] [2024-11-14 03:49:32,541 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2837] [2024-11-14 03:49:32,541 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2846] [2024-11-14 03:49:32,541 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [2861] [2024-11-14 03:49:32,541 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2950] [2024-11-14 03:49:32,808 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_626a713c-8715-41d4-bc28-2b7c650756a3/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2024-11-14 03:49:32,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:49:32,929 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:49:32,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:32 WrapperNode [2024-11-14 03:49:32,930 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:49:32,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:49:32,933 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:49:32,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:49:32,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:32" (1/1) ... [2024-11-14 03:49:32,993 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:32" (1/1) ... [2024-11-14 03:49:33,069 INFO L138 Inliner]: procedures = 90, calls = 338, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 816 [2024-11-14 03:49:33,069 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:49:33,070 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:49:33,070 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:49:33,070 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:49:33,086 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:32" (1/1) ... [2024-11-14 03:49:33,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:32" (1/1) ... [2024-11-14 03:49:33,105 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:32" (1/1) ... [2024-11-14 03:49:33,110 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:32" (1/1) ... [2024-11-14 03:49:33,167 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:32" (1/1) ... [2024-11-14 03:49:33,211 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:32" (1/1) ... [2024-11-14 03:49:33,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:32" (1/1) ... [2024-11-14 03:49:33,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:32" (1/1) ... [2024-11-14 03:49:33,252 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:49:33,254 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:49:33,258 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:49:33,258 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:49:33,260 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:32" (1/1) ... [2024-11-14 03:49:33,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:49:33,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:49:33,327 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:49:33,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:49:33,406 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-14 03:49:33,407 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-14 03:49:33,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:49:33,407 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-14 03:49:33,407 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-14 03:49:33,408 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-14 03:49:33,408 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-14 03:49:33,408 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2024-11-14 03:49:33,408 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2024-11-14 03:49:33,408 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-14 03:49:33,409 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-14 03:49:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-14 03:49:33,409 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-14 03:49:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-14 03:49:33,409 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-14 03:49:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-14 03:49:33,410 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-14 03:49:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-14 03:49:33,410 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-14 03:49:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-14 03:49:33,411 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-14 03:49:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-14 03:49:33,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-14 03:49:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-14 03:49:33,411 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-14 03:49:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-14 03:49:33,412 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-14 03:49:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-14 03:49:33,412 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-14 03:49:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-14 03:49:33,413 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-14 03:49:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-14 03:49:33,413 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-14 03:49:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-14 03:49:33,413 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-14 03:49:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-14 03:49:33,414 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-14 03:49:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-14 03:49:33,414 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-14 03:49:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:49:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-14 03:49:33,415 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-14 03:49:33,415 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-14 03:49:33,415 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-14 03:49:33,415 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-14 03:49:33,415 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-14 03:49:33,415 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-14 03:49:33,416 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-14 03:49:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-11-14 03:49:33,416 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-11-14 03:49:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:49:33,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:49:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-14 03:49:33,416 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-14 03:49:33,670 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:49:33,674 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:49:35,819 INFO L? ?]: Removed 460 outVars from TransFormulas that were not future-live. [2024-11-14 03:49:35,819 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:49:37,256 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:49:37,260 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-14 03:49:37,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:49:37 BoogieIcfgContainer [2024-11-14 03:49:37,261 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:49:37,267 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:49:37,268 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:49:37,276 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:49:37,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:49:31" (1/3) ... [2024-11-14 03:49:37,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200d39fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:49:37, skipping insertion in model container [2024-11-14 03:49:37,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:49:32" (2/3) ... [2024-11-14 03:49:37,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200d39fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:49:37, skipping insertion in model container [2024-11-14 03:49:37,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:49:37" (3/3) ... [2024-11-14 03:49:37,282 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product21.cil.c [2024-11-14 03:49:37,306 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:49:37,310 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec13_product21.cil.c that has 26 procedures, 409 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-14 03:49:37,424 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:49:37,444 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;@b415356, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:49:37,444 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:49:37,454 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 03:49:37,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-14 03:49:37,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:37,502 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 03:49:37,503 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:49:37,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:37,512 INFO L85 PathProgramCache]: Analyzing trace with hash 569959720, now seen corresponding path program 1 times [2024-11-14 03:49:37,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:49:37,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981002117] [2024-11-14 03:49:37,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:37,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:49:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:39,229 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 03:49:39,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:49:39,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981002117] [2024-11-14 03:49:39,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981002117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:39,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:49:39,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:49:39,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887382752] [2024-11-14 03:49:39,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:39,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:49:39,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:49:39,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:49:39,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:49:39,276 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 03:49:40,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:40,483 INFO L93 Difference]: Finished difference Result 1204 states and 1950 transitions. [2024-11-14 03:49:40,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 03:49:40,488 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 03:49:40,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:40,523 INFO L225 Difference]: With dead ends: 1204 [2024-11-14 03:49:40,524 INFO L226 Difference]: Without dead ends: 800 [2024-11-14 03:49:40,539 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 03:49:40,543 INFO L432 NwaCegarLoop]: 758 mSDtfsCounter, 762 mSDsluCounter, 3510 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 4268 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:40,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 4268 Invalid, 408 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 03:49:40,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2024-11-14 03:49:40,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 784. [2024-11-14 03:49:40,753 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 03:49:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1249 transitions. [2024-11-14 03:49:40,792 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1249 transitions. Word has length 82 [2024-11-14 03:49:40,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:40,793 INFO L471 AbstractCegarLoop]: Abstraction has 784 states and 1249 transitions. [2024-11-14 03:49:40,794 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 03:49:40,794 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1249 transitions. [2024-11-14 03:49:40,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-14 03:49:40,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:40,810 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 03:49:40,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:49:40,810 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:49:40,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:40,813 INFO L85 PathProgramCache]: Analyzing trace with hash -791406807, now seen corresponding path program 1 times [2024-11-14 03:49:40,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:49:40,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208484460] [2024-11-14 03:49:40,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:40,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:49:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:42,978 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 03:49:42,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:49:42,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208484460] [2024-11-14 03:49:42,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208484460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:42,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:49:42,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:49:42,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126063774] [2024-11-14 03:49:42,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:42,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:49:42,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:49:42,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:49:42,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:49:42,986 INFO L87 Difference]: Start difference. First operand 784 states and 1249 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-14 03:49:45,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:45,887 INFO L93 Difference]: Finished difference Result 3063 states and 4974 transitions. [2024-11-14 03:49:45,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:49:45,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 87 [2024-11-14 03:49:45,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:45,910 INFO L225 Difference]: With dead ends: 3063 [2024-11-14 03:49:45,910 INFO L226 Difference]: Without dead ends: 2294 [2024-11-14 03:49:45,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:49:45,919 INFO L432 NwaCegarLoop]: 1184 mSDtfsCounter, 1169 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 2917 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:45,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1171 Valid, 2917 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-14 03:49:45,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2024-11-14 03:49:46,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 1968. [2024-11-14 03:49:46,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1429 states have (on average 1.5612316305108467) internal successors, (2231), 1481 states have internal predecessors, (2231), 422 states have call successors, (422), 117 states have call predecessors, (422), 116 states have return successors, (492), 407 states have call predecessors, (492), 414 states have call successors, (492) [2024-11-14 03:49:46,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 3145 transitions. [2024-11-14 03:49:46,203 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 3145 transitions. Word has length 87 [2024-11-14 03:49:46,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:46,204 INFO L471 AbstractCegarLoop]: Abstraction has 1968 states and 3145 transitions. [2024-11-14 03:49:46,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-14 03:49:46,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 3145 transitions. [2024-11-14 03:49:46,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-14 03:49:46,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:46,216 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 03:49:46,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:49:46,220 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:49:46,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:46,220 INFO L85 PathProgramCache]: Analyzing trace with hash 385848249, now seen corresponding path program 1 times [2024-11-14 03:49:46,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:49:46,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737096360] [2024-11-14 03:49:46,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:46,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:49:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:46,679 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 03:49:46,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:49:46,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737096360] [2024-11-14 03:49:46,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737096360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:46,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:49:46,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:49:46,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272646634] [2024-11-14 03:49:46,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:46,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:49:46,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:49:46,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:49:46,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:49:46,685 INFO L87 Difference]: Start difference. First operand 1968 states and 3145 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 03:49:47,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:47,137 INFO L93 Difference]: Finished difference Result 3017 states and 4824 transitions. [2024-11-14 03:49:47,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:49:47,137 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 03:49:47,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:47,155 INFO L225 Difference]: With dead ends: 3017 [2024-11-14 03:49:47,155 INFO L226 Difference]: Without dead ends: 2025 [2024-11-14 03:49:47,165 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 03:49:47,166 INFO L432 NwaCegarLoop]: 597 mSDtfsCounter, 0 mSDsluCounter, 2961 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3558 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 03:49:47,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3558 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:49:47,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2024-11-14 03:49:47,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 2015. [2024-11-14 03:49:47,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 1462 states have (on average 1.548563611491108) internal successors, (2264), 1515 states have internal predecessors, (2264), 422 states have call successors, (422), 117 states have call predecessors, (422), 130 states have return successors, (522), 420 states have call predecessors, (522), 414 states have call successors, (522) [2024-11-14 03:49:47,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 3208 transitions. [2024-11-14 03:49:47,365 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 3208 transitions. Word has length 86 [2024-11-14 03:49:47,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:47,365 INFO L471 AbstractCegarLoop]: Abstraction has 2015 states and 3208 transitions. [2024-11-14 03:49:47,365 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 03:49:47,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 3208 transitions. [2024-11-14 03:49:47,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-14 03:49:47,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:47,373 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 03:49:47,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:49:47,374 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:49:47,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:47,378 INFO L85 PathProgramCache]: Analyzing trace with hash -117445303, now seen corresponding path program 1 times [2024-11-14 03:49:47,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:49:47,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930518281] [2024-11-14 03:49:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:47,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:49:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:47,743 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 03:49:47,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:49:47,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930518281] [2024-11-14 03:49:47,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930518281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:47,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:49:47,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:49:47,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750453895] [2024-11-14 03:49:47,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:47,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:49:47,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:49:47,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:49:47,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:49:47,746 INFO L87 Difference]: Start difference. First operand 2015 states and 3208 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 03:49:48,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:48,203 INFO L93 Difference]: Finished difference Result 3071 states and 4891 transitions. [2024-11-14 03:49:48,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:49:48,203 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 03:49:48,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:48,221 INFO L225 Difference]: With dead ends: 3071 [2024-11-14 03:49:48,221 INFO L226 Difference]: Without dead ends: 2058 [2024-11-14 03:49:48,231 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 03:49:48,232 INFO L432 NwaCegarLoop]: 601 mSDtfsCounter, 0 mSDsluCounter, 2976 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:48,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3577 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:49:48,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2024-11-14 03:49:48,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 2022. [2024-11-14 03:49:48,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2022 states, 1469 states have (on average 1.5459496255956433) internal successors, (2271), 1515 states have internal predecessors, (2271), 422 states have call successors, (422), 117 states have call predecessors, (422), 130 states have return successors, (522), 427 states have call predecessors, (522), 414 states have call successors, (522) [2024-11-14 03:49:48,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 3215 transitions. [2024-11-14 03:49:48,419 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 3215 transitions. Word has length 87 [2024-11-14 03:49:48,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:48,419 INFO L471 AbstractCegarLoop]: Abstraction has 2022 states and 3215 transitions. [2024-11-14 03:49:48,420 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 03:49:48,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 3215 transitions. [2024-11-14 03:49:48,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-14 03:49:48,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:48,428 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 03:49:48,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 03:49:48,428 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:49:48,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:48,429 INFO L85 PathProgramCache]: Analyzing trace with hash -176940582, now seen corresponding path program 1 times [2024-11-14 03:49:48,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:49:48,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254739536] [2024-11-14 03:49:48,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:48,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:49:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:48,817 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 03:49:48,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:49:48,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254739536] [2024-11-14 03:49:48,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254739536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:48,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:49:48,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:49:48,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654410082] [2024-11-14 03:49:48,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:48,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:49:48,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:49:48,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:49:48,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:49:48,821 INFO L87 Difference]: Start difference. First operand 2022 states and 3215 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-14 03:49:50,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:50,611 INFO L93 Difference]: Finished difference Result 4391 states and 7027 transitions. [2024-11-14 03:49:50,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:49:50,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 94 [2024-11-14 03:49:50,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:50,640 INFO L225 Difference]: With dead ends: 4391 [2024-11-14 03:49:50,640 INFO L226 Difference]: Without dead ends: 3015 [2024-11-14 03:49:50,655 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 03:49:50,658 INFO L432 NwaCegarLoop]: 1073 mSDtfsCounter, 1140 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:50,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 1928 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-14 03:49:50,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2024-11-14 03:49:50,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 2974. [2024-11-14 03:49:50,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2131 states have (on average 1.4931956827780384) internal successors, (3182), 2203 states have internal predecessors, (3182), 627 states have call successors, (627), 194 states have call predecessors, (627), 215 states have return successors, (819), 634 states have call predecessors, (819), 616 states have call successors, (819) [2024-11-14 03:49:50,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 4628 transitions. [2024-11-14 03:49:50,999 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 4628 transitions. Word has length 94 [2024-11-14 03:49:50,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:51,001 INFO L471 AbstractCegarLoop]: Abstraction has 2974 states and 4628 transitions. [2024-11-14 03:49:51,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-14 03:49:51,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 4628 transitions. [2024-11-14 03:49:51,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-14 03:49:51,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:51,007 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 03:49:51,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 03:49:51,007 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:49:51,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:51,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1499528303, now seen corresponding path program 1 times [2024-11-14 03:49:51,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:49:51,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831887046] [2024-11-14 03:49:51,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:51,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:49:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:51,429 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 03:49:51,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:49:51,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831887046] [2024-11-14 03:49:51,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831887046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:51,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:49:51,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:49:51,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002771627] [2024-11-14 03:49:51,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:51,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:49:51,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:49:51,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:49:51,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:49:51,433 INFO L87 Difference]: Start difference. First operand 2974 states and 4628 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 03:49:52,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:52,612 INFO L93 Difference]: Finished difference Result 5117 states and 7998 transitions. [2024-11-14 03:49:52,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:49:52,613 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 03:49:52,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:52,647 INFO L225 Difference]: With dead ends: 5117 [2024-11-14 03:49:52,647 INFO L226 Difference]: Without dead ends: 3015 [2024-11-14 03:49:52,667 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 03:49:52,669 INFO L432 NwaCegarLoop]: 752 mSDtfsCounter, 519 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 2644 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:52,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 2644 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 03:49:52,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2024-11-14 03:49:52,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 2990. [2024-11-14 03:49:52,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2990 states, 2140 states have (on average 1.4911214953271028) internal successors, (3191), 2216 states have internal predecessors, (3191), 631 states have call successors, (631), 197 states have call predecessors, (631), 218 states have return successors, (830), 634 states have call predecessors, (830), 620 states have call successors, (830) [2024-11-14 03:49:53,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2990 states to 2990 states and 4652 transitions. [2024-11-14 03:49:53,025 INFO L78 Accepts]: Start accepts. Automaton has 2990 states and 4652 transitions. Word has length 96 [2024-11-14 03:49:53,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:53,026 INFO L471 AbstractCegarLoop]: Abstraction has 2990 states and 4652 transitions. [2024-11-14 03:49:53,027 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 03:49:53,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2990 states and 4652 transitions. [2024-11-14 03:49:53,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-14 03:49:53,031 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:53,031 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 03:49:53,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 03:49:53,032 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:49:53,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:53,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1171563434, now seen corresponding path program 1 times [2024-11-14 03:49:53,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:49:53,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076583056] [2024-11-14 03:49:53,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:53,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:49:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:53,280 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 03:49:53,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:49:53,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076583056] [2024-11-14 03:49:53,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076583056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:49:53,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829018585] [2024-11-14 03:49:53,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:53,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:49:53,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:49:53,285 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:49:53,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:49:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:53,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:49:53,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:53,921 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 03:49:53,921 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:49:53,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829018585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:53,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:49:53,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-14 03:49:53,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338520888] [2024-11-14 03:49:53,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:53,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:49:53,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:49:53,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:49:53,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:49:53,931 INFO L87 Difference]: Start difference. First operand 2990 states and 4652 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 03:49:54,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:54,538 INFO L93 Difference]: Finished difference Result 6019 states and 9501 transitions. [2024-11-14 03:49:54,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:49:54,539 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 03:49:54,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:54,574 INFO L225 Difference]: With dead ends: 6019 [2024-11-14 03:49:54,574 INFO L226 Difference]: Without dead ends: 3044 [2024-11-14 03:49:54,616 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 03:49:54,617 INFO L432 NwaCegarLoop]: 594 mSDtfsCounter, 26 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 03:49:54,617 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 03:49:54,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2024-11-14 03:49:54,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 3044. [2024-11-14 03:49:54,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3044 states, 2185 states have (on average 1.4851258581235698) internal successors, (3245), 2261 states have internal predecessors, (3245), 631 states have call successors, (631), 206 states have call predecessors, (631), 227 states have return successors, (830), 634 states have call predecessors, (830), 620 states have call successors, (830) [2024-11-14 03:49:54,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3044 states to 3044 states and 4706 transitions. [2024-11-14 03:49:55,009 INFO L78 Accepts]: Start accepts. Automaton has 3044 states and 4706 transitions. Word has length 99 [2024-11-14 03:49:55,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:55,010 INFO L471 AbstractCegarLoop]: Abstraction has 3044 states and 4706 transitions. [2024-11-14 03:49:55,010 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 03:49:55,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3044 states and 4706 transitions. [2024-11-14 03:49:55,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-14 03:49:55,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:55,015 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 03:49:55,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 03:49:55,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-14 03:49:55,217 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:49:55,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:55,218 INFO L85 PathProgramCache]: Analyzing trace with hash -283257205, now seen corresponding path program 1 times [2024-11-14 03:49:55,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:49:55,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784336560] [2024-11-14 03:49:55,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:55,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:49:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:55,564 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 03:49:55,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:49:55,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784336560] [2024-11-14 03:49:55,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784336560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:49:55,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421436821] [2024-11-14 03:49:55,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:55,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:49:55,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:49:55,568 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:49:55,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:49:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:56,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:49:56,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:56,210 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 03:49:56,211 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:49:56,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421436821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:56,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:49:56,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-14 03:49:56,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459045920] [2024-11-14 03:49:56,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:56,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:49:56,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:49:56,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:49:56,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:49:56,213 INFO L87 Difference]: Start difference. First operand 3044 states and 4706 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 03:49:56,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:56,677 INFO L93 Difference]: Finished difference Result 6100 states and 9535 transitions. [2024-11-14 03:49:56,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:49:56,678 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 03:49:56,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:56,708 INFO L225 Difference]: With dead ends: 6100 [2024-11-14 03:49:56,709 INFO L226 Difference]: Without dead ends: 3035 [2024-11-14 03:49:56,732 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 03:49:56,733 INFO L432 NwaCegarLoop]: 593 mSDtfsCounter, 32 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 03:49:56,734 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 03:49:56,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2024-11-14 03:49:57,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 3035. [2024-11-14 03:49:57,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 2176 states have (on average 1.4747242647058822) internal successors, (3209), 2252 states have internal predecessors, (3209), 631 states have call successors, (631), 206 states have call predecessors, (631), 227 states have return successors, (830), 634 states have call predecessors, (830), 620 states have call successors, (830) [2024-11-14 03:49:57,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 4670 transitions. [2024-11-14 03:49:57,100 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 4670 transitions. Word has length 101 [2024-11-14 03:49:57,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:57,101 INFO L471 AbstractCegarLoop]: Abstraction has 3035 states and 4670 transitions. [2024-11-14 03:49:57,102 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 03:49:57,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 4670 transitions. [2024-11-14 03:49:57,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-14 03:49:57,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:57,108 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] [2024-11-14 03:49:57,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 03:49:57,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:49:57,310 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:49:57,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:57,311 INFO L85 PathProgramCache]: Analyzing trace with hash 358471851, now seen corresponding path program 1 times [2024-11-14 03:49:57,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:49:57,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134801243] [2024-11-14 03:49:57,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:57,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:49:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:57,600 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 03:49:57,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:49:57,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134801243] [2024-11-14 03:49:57,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134801243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:49:57,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998272376] [2024-11-14 03:49:57,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:57,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:49:57,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:49:57,604 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:49:57,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 03:49:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:58,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:49:58,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:58,234 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 03:49:58,234 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:49:58,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998272376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:58,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:49:58,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-14 03:49:58,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690447567] [2024-11-14 03:49:58,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:58,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:49:58,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:49:58,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:49:58,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:49:58,236 INFO L87 Difference]: Start difference. First operand 3035 states and 4670 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (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 03:50:00,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:50:00,014 INFO L93 Difference]: Finished difference Result 7836 states and 12525 transitions. [2024-11-14 03:50:00,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:50:00,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (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 103 [2024-11-14 03:50:00,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:50:00,073 INFO L225 Difference]: With dead ends: 7836 [2024-11-14 03:50:00,074 INFO L226 Difference]: Without dead ends: 4816 [2024-11-14 03:50:00,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:50:00,101 INFO L432 NwaCegarLoop]: 657 mSDtfsCounter, 615 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1857 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:50:00,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 1857 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 03:50:00,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4816 states. [2024-11-14 03:50:00,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4816 to 4746. [2024-11-14 03:50:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4746 states, 3419 states have (on average 1.4568587306229892) internal successors, (4981), 3541 states have internal predecessors, (4981), 975 states have call successors, (975), 324 states have call predecessors, (975), 351 states have return successors, (1458), 974 states have call predecessors, (1458), 958 states have call successors, (1458) [2024-11-14 03:50:00,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4746 states to 4746 states and 7414 transitions. [2024-11-14 03:50:00,720 INFO L78 Accepts]: Start accepts. Automaton has 4746 states and 7414 transitions. Word has length 103 [2024-11-14 03:50:00,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:50:00,721 INFO L471 AbstractCegarLoop]: Abstraction has 4746 states and 7414 transitions. [2024-11-14 03:50:00,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (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 03:50:00,721 INFO L276 IsEmpty]: Start isEmpty. Operand 4746 states and 7414 transitions. [2024-11-14 03:50:00,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-14 03:50:00,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:50:00,728 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] [2024-11-14 03:50:00,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 03:50:00,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:50:00,933 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:50:00,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:50:00,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1895576963, now seen corresponding path program 1 times [2024-11-14 03:50:00,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:50:00,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235166174] [2024-11-14 03:50:00,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:00,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:50:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:01,507 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 03:50:01,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:50:01,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235166174] [2024-11-14 03:50:01,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235166174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:50:01,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721927599] [2024-11-14 03:50:01,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:01,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:50:01,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:50:01,512 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:50:01,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 03:50:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:02,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:50:02,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:02,444 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 03:50:02,446 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:50:02,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721927599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:50:02,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:50:02,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-14 03:50:02,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029724605] [2024-11-14 03:50:02,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:50:02,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:50:02,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:50:02,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:50:02,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-14 03:50:02,449 INFO L87 Difference]: Start difference. First operand 4746 states and 7414 transitions. Second operand has 6 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 03:50:04,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:50:04,233 INFO L93 Difference]: Finished difference Result 10613 states and 16912 transitions. [2024-11-14 03:50:04,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 03:50:04,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 103 [2024-11-14 03:50:04,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:50:04,297 INFO L225 Difference]: With dead ends: 10613 [2024-11-14 03:50:04,297 INFO L226 Difference]: Without dead ends: 5882 [2024-11-14 03:50:04,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-14 03:50:04,331 INFO L432 NwaCegarLoop]: 798 mSDtfsCounter, 693 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 3421 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:50:04,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 3421 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 03:50:04,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5882 states. [2024-11-14 03:50:04,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5882 to 5858. [2024-11-14 03:50:04,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5858 states, 4248 states have (on average 1.4322033898305084) internal successors, (6084), 4376 states have internal predecessors, (6084), 1138 states have call successors, (1138), 449 states have call predecessors, (1138), 471 states have return successors, (2204), 1126 states have call predecessors, (2204), 1109 states have call successors, (2204) [2024-11-14 03:50:05,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5858 states to 5858 states and 9426 transitions. [2024-11-14 03:50:05,014 INFO L78 Accepts]: Start accepts. Automaton has 5858 states and 9426 transitions. Word has length 103 [2024-11-14 03:50:05,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:50:05,015 INFO L471 AbstractCegarLoop]: Abstraction has 5858 states and 9426 transitions. [2024-11-14 03:50:05,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 03:50:05,016 INFO L276 IsEmpty]: Start isEmpty. Operand 5858 states and 9426 transitions. [2024-11-14 03:50:05,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-14 03:50:05,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:50:05,021 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 03:50:05,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 03:50:05,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-14 03:50:05,226 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:50:05,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:50:05,227 INFO L85 PathProgramCache]: Analyzing trace with hash 3131626, now seen corresponding path program 1 times [2024-11-14 03:50:05,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:50:05,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272955384] [2024-11-14 03:50:05,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:05,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:50:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:05,441 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 03:50:05,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:50:05,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272955384] [2024-11-14 03:50:05,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272955384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:50:05,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756603404] [2024-11-14 03:50:05,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:05,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:50:05,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:50:05,445 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:50:05,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 03:50:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:05,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:50:05,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:05,976 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 03:50:05,979 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:50:05,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756603404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:50:05,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:50:05,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-14 03:50:05,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804282805] [2024-11-14 03:50:05,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:50:05,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:50:05,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:50:05,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:50:05,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:50:05,981 INFO L87 Difference]: Start difference. First operand 5858 states and 9426 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 03:50:06,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:50:06,727 INFO L93 Difference]: Finished difference Result 11539 states and 19020 transitions. [2024-11-14 03:50:06,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:50:06,728 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 03:50:06,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:50:06,793 INFO L225 Difference]: With dead ends: 11539 [2024-11-14 03:50:06,793 INFO L226 Difference]: Without dead ends: 5534 [2024-11-14 03:50:06,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:50:06,859 INFO L432 NwaCegarLoop]: 603 mSDtfsCounter, 5 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:50:06,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1189 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:50:06,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5534 states. [2024-11-14 03:50:07,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5534 to 5330. [2024-11-14 03:50:07,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 3817 states have (on average 1.4267749541524757) internal successors, (5446), 3941 states have internal predecessors, (5446), 1079 states have call successors, (1079), 413 states have call predecessors, (1079), 433 states have return successors, (1896), 1069 states have call predecessors, (1896), 1054 states have call successors, (1896) [2024-11-14 03:50:07,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 8421 transitions. [2024-11-14 03:50:07,488 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 8421 transitions. Word has length 108 [2024-11-14 03:50:07,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:50:07,489 INFO L471 AbstractCegarLoop]: Abstraction has 5330 states and 8421 transitions. [2024-11-14 03:50:07,489 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 03:50:07,489 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 8421 transitions. [2024-11-14 03:50:07,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-14 03:50:07,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:50:07,499 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 03:50:07,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 03:50:07,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:50:07,704 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:50:07,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:50:07,704 INFO L85 PathProgramCache]: Analyzing trace with hash 360165189, now seen corresponding path program 1 times [2024-11-14 03:50:07,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:50:07,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674657934] [2024-11-14 03:50:07,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:07,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:50:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:08,053 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 03:50:08,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:50:08,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674657934] [2024-11-14 03:50:08,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674657934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:50:08,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365661339] [2024-11-14 03:50:08,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:08,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:50:08,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:50:08,057 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:50:08,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 03:50:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:08,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:50:08,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:08,789 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 03:50:08,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:50:09,215 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 03:50:09,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365661339] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:50:09,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [47070211] [2024-11-14 03:50:09,263 INFO L159 IcfgInterpreter]: Started Sifa with 97 locations of interest [2024-11-14 03:50:09,263 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:50:09,268 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:50:09,276 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:50:09,277 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:50:28,841 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 568 for LOIs [2024-11-14 03:50:33,095 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 433 for LOIs [2024-11-14 03:50:33,421 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 536 for LOIs [2024-11-14 03:50:44,082 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 618 for LOIs [2024-11-14 03:50:47,869 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 510 for LOIs [2024-11-14 03:50:49,693 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:50:55,294 WARN L286 SmtUtils]: Spent 5.35s on a formula simplification that was a NOOP. DAG size: 501 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:51:00,832 WARN L286 SmtUtils]: Spent 5.41s on a formula simplification that was a NOOP. DAG size: 499 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:51:07,131 WARN L286 SmtUtils]: Spent 5.63s 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 03:51:17,077 WARN L286 SmtUtils]: Spent 9.31s 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 03:51:22,594 WARN L286 SmtUtils]: Spent 5.33s on a formula simplification that was a NOOP. DAG size: 501 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:51:46,973 WARN L286 SmtUtils]: Spent 18.39s 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 03:52:09,175 WARN L286 SmtUtils]: Spent 20.68s 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 03:52:32,782 WARN L286 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 538 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:52:47,032 WARN L286 SmtUtils]: Spent 6.21s 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 03:52:58,211 WARN L286 SmtUtils]: Spent 6.43s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:53:05,043 WARN L286 SmtUtils]: Spent 6.49s 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 03:53:05,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [47070211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:53:05,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:53:05,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [5, 6, 7] total 33 [2024-11-14 03:53:05,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456303140] [2024-11-14 03:53:05,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:53:05,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 03:53:05,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:53:05,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 03:53:05,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2024-11-14 03:53:05,053 INFO L87 Difference]: Start difference. First operand 5330 states and 8421 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 03:53:11,055 WARN L286 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 507 DAG size of output: 501 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:53:16,373 WARN L286 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 514 DAG size of output: 503 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:53:23,656 WARN L286 SmtUtils]: Spent 6.84s 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 03:53:30,016 WARN L286 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 577 DAG size of output: 538 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:53:36,178 WARN L286 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 584 DAG size of output: 540 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:53:42,085 WARN L286 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 582 DAG size of output: 540 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:53:47,813 WARN L286 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 665 DAG size of output: 612 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:54:03,350 WARN L286 SmtUtils]: Spent 6.59s 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 03:54:10,225 WARN L286 SmtUtils]: Spent 6.52s on a formula simplification. DAG size of input: 576 DAG size of output: 572 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:54:16,923 WARN L286 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 576 DAG size of output: 572 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:54:40,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:54:40,026 INFO L93 Difference]: Finished difference Result 10643 states and 16822 transitions. [2024-11-14 03:54:40,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-14 03:54:40,027 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 03:54:40,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:54:40,070 INFO L225 Difference]: With dead ends: 10643 [2024-11-14 03:54:40,070 INFO L226 Difference]: Without dead ends: 5336 [2024-11-14 03:54:40,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 205.5s TimeCoverageRelationStatistics Valid=262, Invalid=1718, Unknown=0, NotChecked=0, Total=1980 [2024-11-14 03:54:40,108 INFO L432 NwaCegarLoop]: 590 mSDtfsCounter, 8 mSDsluCounter, 3802 mSDsCounter, 0 mSdLazyCounter, 3904 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4392 SdHoareTripleChecker+Invalid, 3914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:54:40,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4392 Invalid, 3914 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 3904 Invalid, 0 Unknown, 0 Unchecked, 24.3s Time] [2024-11-14 03:54:40,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5336 states. [2024-11-14 03:54:40,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5336 to 5336. [2024-11-14 03:54:40,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5336 states, 3821 states have (on average 1.4263281863386548) internal successors, (5450), 3944 states have internal predecessors, (5450), 1079 states have call successors, (1079), 415 states have call predecessors, (1079), 435 states have return successors, (1896), 1070 states have call predecessors, (1896), 1054 states have call successors, (1896) [2024-11-14 03:54:40,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5336 states to 5336 states and 8425 transitions. [2024-11-14 03:54:40,652 INFO L78 Accepts]: Start accepts. Automaton has 5336 states and 8425 transitions. Word has length 111 [2024-11-14 03:54:40,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:54:40,653 INFO L471 AbstractCegarLoop]: Abstraction has 5336 states and 8425 transitions. [2024-11-14 03:54:40,653 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 03:54:40,653 INFO L276 IsEmpty]: Start isEmpty. Operand 5336 states and 8425 transitions. [2024-11-14 03:54:40,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-14 03:54:40,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:54:40,658 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] [2024-11-14 03:54:40,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 03:54:40,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:54:40,860 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:54:40,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:54:40,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1840380134, now seen corresponding path program 1 times [2024-11-14 03:54:40,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:54:40,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771294666] [2024-11-14 03:54:40,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:54:40,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:54:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:54:41,193 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 03:54:41,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:54:41,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771294666] [2024-11-14 03:54:41,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771294666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:54:41,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:54:41,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:54:41,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573761753] [2024-11-14 03:54:41,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:54:41,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:54:41,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:54:41,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:54:41,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:54:41,197 INFO L87 Difference]: Start difference. First operand 5336 states and 8425 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 03:54:42,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:54:42,035 INFO L93 Difference]: Finished difference Result 10079 states and 16302 transitions. [2024-11-14 03:54:42,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:54:42,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 113 [2024-11-14 03:54:42,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:54:42,091 INFO L225 Difference]: With dead ends: 10079 [2024-11-14 03:54:42,091 INFO L226 Difference]: Without dead ends: 5381 [2024-11-14 03:54:42,157 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 03:54:42,159 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:54:42,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2380 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:54:42,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5381 states. [2024-11-14 03:54:42,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5381 to 5366. [2024-11-14 03:54:42,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5366 states, 3851 states have (on average 1.423007011165931) internal successors, (5480), 3974 states have internal predecessors, (5480), 1079 states have call successors, (1079), 415 states have call predecessors, (1079), 435 states have return successors, (1896), 1070 states have call predecessors, (1896), 1054 states have call successors, (1896) [2024-11-14 03:54:42,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5366 states to 5366 states and 8455 transitions. [2024-11-14 03:54:42,748 INFO L78 Accepts]: Start accepts. Automaton has 5366 states and 8455 transitions. Word has length 113 [2024-11-14 03:54:42,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:54:42,752 INFO L471 AbstractCegarLoop]: Abstraction has 5366 states and 8455 transitions. [2024-11-14 03:54:42,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 03:54:42,752 INFO L276 IsEmpty]: Start isEmpty. Operand 5366 states and 8455 transitions. [2024-11-14 03:54:42,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-14 03:54:42,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:54:42,759 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 03:54:42,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-14 03:54:42,760 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:54:42,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:54:42,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1778988866, now seen corresponding path program 1 times [2024-11-14 03:54:42,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:54:42,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716744653] [2024-11-14 03:54:42,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:54:42,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:54:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:54:43,000 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 03:54:43,000 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:54:43,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716744653] [2024-11-14 03:54:43,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716744653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:54:43,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25087427] [2024-11-14 03:54:43,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:54:43,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:54:43,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:54:43,005 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:54:43,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 03:54:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:54:43,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 1344 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:54:43,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:54:43,700 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 03:54:43,700 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:54:44,025 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 03:54:44,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25087427] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:54:44,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [813419162] [2024-11-14 03:54:44,029 INFO L159 IcfgInterpreter]: Started Sifa with 100 locations of interest [2024-11-14 03:54:44,029 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:54:44,029 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:54:44,030 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:54:44,030 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:54:59,277 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 568 for LOIs [2024-11-14 03:55:20,858 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 441 for LOIs [2024-11-14 03:55:23,557 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection__wrappee__weight with input of size 441 for LOIs [2024-11-14 03:55:29,729 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 445 for LOIs [2024-11-14 03:55:30,750 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 437 for LOIs [2024-11-14 03:55:30,969 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 447 for LOIs [2024-11-14 03:55:34,017 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 449 for LOIs [2024-11-14 03:55:34,951 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 433 for LOIs [2024-11-14 03:55:35,167 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 536 for LOIs [2024-11-14 03:55:43,174 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 618 for LOIs [2024-11-14 03:55:46,268 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 510 for LOIs [2024-11-14 03:55:47,642 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:55:52,836 WARN L286 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 501 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:55:58,150 WARN L286 SmtUtils]: Spent 5.19s on a formula simplification that was a NOOP. DAG size: 499 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:56:03,889 WARN L286 SmtUtils]: Spent 5.03s 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 03:56:14,136 WARN L286 SmtUtils]: Spent 9.50s 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 03:56:19,487 WARN L286 SmtUtils]: Spent 5.19s on a formula simplification that was a NOOP. DAG size: 501 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:56:24,996 WARN L286 SmtUtils]: Spent 5.25s on a formula simplification that was a NOOP. DAG size: 501 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:56:42,467 WARN L286 SmtUtils]: Spent 16.36s 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 03:57:00,374 WARN L286 SmtUtils]: Spent 16.62s 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 03:57:35,436 WARN L286 SmtUtils]: Spent 5.79s 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 03:57:46,167 WARN L286 SmtUtils]: Spent 6.11s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:57:52,409 WARN L286 SmtUtils]: Spent 5.93s 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 03:57:57,922 WARN L286 SmtUtils]: Spent 5.17s 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 03:58:11,562 WARN L286 SmtUtils]: Spent 6.93s on a formula simplification. DAG size of input: 478 DAG size of output: 450 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:58:17,111 WARN L286 SmtUtils]: Spent 5.19s on a formula simplification that was a NOOP. DAG size: 570 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:58:22,917 WARN L286 SmtUtils]: Spent 5.47s 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 03:58:28,448 WARN L286 SmtUtils]: Spent 5.15s 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 03:58:41,895 WARN L286 SmtUtils]: Spent 5.80s 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 03:58:48,086 WARN L286 SmtUtils]: Spent 5.74s 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 03:58:53,915 WARN L286 SmtUtils]: Spent 5.37s 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 03:58:59,831 WARN L286 SmtUtils]: Spent 5.45s 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 03:59:05,281 WARN L286 SmtUtils]: Spent 5.02s 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 03:59:39,181 WARN L286 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 449 DAG size of output: 437 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 03:59:47,847 WARN L286 SmtUtils]: Spent 7.06s on a formula simplification. DAG size of input: 457 DAG size of output: 439 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:00:24,734 WARN L286 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 579 DAG size of output: 576 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:00:30,892 WARN L286 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 579 DAG size of output: 576 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:00:36,949 WARN L286 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 577 DAG size of output: 574 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:00:53,877 WARN L286 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 602 DAG size of output: 597 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:00:59,673 WARN L286 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 605 DAG size of output: 600 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:00:59,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [813419162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:00:59,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:00:59,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [5, 6, 7] total 69 [2024-11-14 04:00:59,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862765265] [2024-11-14 04:00:59,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:00:59,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-14 04:00:59,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:00:59,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-14 04:00:59,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=4320, Unknown=0, NotChecked=0, Total=4692 [2024-11-14 04:00:59,683 INFO L87 Difference]: Start difference. First operand 5366 states and 8455 transitions. Second operand has 57 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 37 states have internal predecessors, (71), 15 states have call successors, (19), 12 states have call predecessors, (19), 11 states have return successors, (17), 15 states have call predecessors, (17), 14 states have call successors, (17) [2024-11-14 04:01:16,490 WARN L286 SmtUtils]: Spent 5.93s 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 04:02:00,700 WARN L286 SmtUtils]: Spent 5.05s 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 04:02:53,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:02:53,976 INFO L93 Difference]: Finished difference Result 10830 states and 17072 transitions. [2024-11-14 04:02:53,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-14 04:02:53,976 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 37 states have internal predecessors, (71), 15 states have call successors, (19), 12 states have call predecessors, (19), 11 states have return successors, (17), 15 states have call predecessors, (17), 14 states have call successors, (17) Word has length 116 [2024-11-14 04:02:53,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:02:54,015 INFO L225 Difference]: With dead ends: 10830 [2024-11-14 04:02:54,015 INFO L226 Difference]: Without dead ends: 5493 [2024-11-14 04:02:54,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1982 ImplicationChecksByTransitivity, 369.8s TimeCoverageRelationStatistics Valid=480, Invalid=6000, Unknown=0, NotChecked=0, Total=6480 [2024-11-14 04:02:54,047 INFO L432 NwaCegarLoop]: 589 mSDtfsCounter, 98 mSDsluCounter, 9637 mSDsCounter, 0 mSdLazyCounter, 12274 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 10226 SdHoareTripleChecker+Invalid, 12305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 12274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:02:54,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 10226 Invalid, 12305 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [31 Valid, 12274 Invalid, 0 Unknown, 0 Unchecked, 55.7s Time] [2024-11-14 04:02:54,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5493 states. [2024-11-14 04:02:54,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5493 to 5453. [2024-11-14 04:02:54,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5453 states, 3918 states have (on average 1.4170495150587035) internal successors, (5552), 4043 states have internal predecessors, (5552), 1090 states have call successors, (1090), 421 states have call predecessors, (1090), 444 states have return successors, (1910), 1082 states have call predecessors, (1910), 1065 states have call successors, (1910) [2024-11-14 04:02:54,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 8552 transitions. [2024-11-14 04:02:54,617 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 8552 transitions. Word has length 116 [2024-11-14 04:02:54,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:02:54,620 INFO L471 AbstractCegarLoop]: Abstraction has 5453 states and 8552 transitions. [2024-11-14 04:02:54,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 37 states have internal predecessors, (71), 15 states have call successors, (19), 12 states have call predecessors, (19), 11 states have return successors, (17), 15 states have call predecessors, (17), 14 states have call successors, (17) [2024-11-14 04:02:54,620 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 8552 transitions. [2024-11-14 04:02:54,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-14 04:02:54,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:02:54,627 INFO L215 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:02:54,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-14 04:02:54,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-14 04:02:54,832 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:02:54,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:02:54,832 INFO L85 PathProgramCache]: Analyzing trace with hash -554334479, now seen corresponding path program 1 times [2024-11-14 04:02:54,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:02:54,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678399783] [2024-11-14 04:02:54,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:02:54,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:02:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:02:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-14 04:02:55,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:02:55,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678399783] [2024-11-14 04:02:55,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678399783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:02:55,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968241547] [2024-11-14 04:02:55,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:02:55,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:02:55,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:02:55,046 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:02:55,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_626a713c-8715-41d4-bc28-2b7c650756a3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 04:02:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:02:55,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 1363 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:02:55,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:02:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 04:02:55,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:02:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 04:02:55,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968241547] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:02:55,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [845080717] [2024-11-14 04:02:55,804 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2024-11-14 04:02:55,804 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:02:55,805 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:02:55,805 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:02:55,805 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:03:06,575 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 568 for LOIs