./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh --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 be08b04703653fc518e8f41dc63d028f83e90f3984633a298492c10e4ad9cfd9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:09:15,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:09:15,394 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 13:09:15,398 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:09:15,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:09:15,435 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:09:15,435 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:09:15,436 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:09:15,436 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:09:15,437 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:09:15,437 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:09:15,438 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:09:15,438 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:09:15,439 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:09:15,439 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:09:15,453 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:09:15,453 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:09:15,454 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:09:15,454 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:09:15,455 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:09:15,455 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:09:15,456 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:09:15,457 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:09:15,457 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:09:15,458 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:09:15,458 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:09:15,458 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:09:15,459 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:09:15,459 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:09:15,460 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:09:15,460 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:09:15,460 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:09:15,461 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:09:15,461 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:09:15,461 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:09:15,462 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:09:15,462 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:09:15,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:09:15,462 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:09:15,462 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:09:15,463 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:09:15,463 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:09:15,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:09:15,463 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:09:15,464 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:09:15,464 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:09:15,464 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:09:15,464 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be08b04703653fc518e8f41dc63d028f83e90f3984633a298492c10e4ad9cfd9 [2023-12-02 13:09:15,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:09:15,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:09:15,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:09:15,719 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:09:15,719 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:09:15,720 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c [2023-12-02 13:09:18,420 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:09:18,761 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:09:18,762 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c [2023-12-02 13:09:18,785 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/data/c319b7726/a8839954a5214ef99855989530b0c9e1/FLAG92aa4bf75 [2023-12-02 13:09:19,014 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/data/c319b7726/a8839954a5214ef99855989530b0c9e1 [2023-12-02 13:09:19,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:09:19,019 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:09:19,020 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:09:19,021 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:09:19,026 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:09:19,026 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:09:19" (1/1) ... [2023-12-02 13:09:19,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d8ecd2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:19, skipping insertion in model container [2023-12-02 13:09:19,028 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:09:19" (1/1) ... [2023-12-02 13:09:19,106 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:09:19,527 WARN L240 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_bd007550-94c7-48fc-a297-bb3dc507ecc9/sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c[58338,58351] [2023-12-02 13:09:19,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:09:19,563 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:09:19,573 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [48] [2023-12-02 13:09:19,574 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [150] [2023-12-02 13:09:19,574 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [516] [2023-12-02 13:09:19,575 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [700] [2023-12-02 13:09:19,575 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1055] [2023-12-02 13:09:19,575 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1175] [2023-12-02 13:09:19,575 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1188] [2023-12-02 13:09:19,575 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1223] [2023-12-02 13:09:19,576 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2820] [2023-12-02 13:09:19,576 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2829] [2023-12-02 13:09:19,652 WARN L240 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_bd007550-94c7-48fc-a297-bb3dc507ecc9/sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c[58338,58351] [2023-12-02 13:09:19,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:09:19,696 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:09:19,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:19 WrapperNode [2023-12-02 13:09:19,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:09:19,698 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:09:19,698 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:09:19,698 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:09:19,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:19" (1/1) ... [2023-12-02 13:09:19,734 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:19" (1/1) ... [2023-12-02 13:09:19,780 INFO L138 Inliner]: procedures = 96, calls = 348, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 910 [2023-12-02 13:09:19,781 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:09:19,782 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:09:19,782 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:09:19,782 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:09:19,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:19" (1/1) ... [2023-12-02 13:09:19,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:19" (1/1) ... [2023-12-02 13:09:19,799 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:19" (1/1) ... [2023-12-02 13:09:19,800 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:19" (1/1) ... [2023-12-02 13:09:19,826 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:19" (1/1) ... [2023-12-02 13:09:19,843 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:19" (1/1) ... [2023-12-02 13:09:19,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:19" (1/1) ... [2023-12-02 13:09:19,857 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:19" (1/1) ... [2023-12-02 13:09:19,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:09:19,869 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:09:19,869 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:09:19,870 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:09:19,870 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:19" (1/1) ... [2023-12-02 13:09:19,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:09:19,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:09:19,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:09:19,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:09:19,947 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-12-02 13:09:19,948 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-12-02 13:09:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:09:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-12-02 13:09:19,948 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-12-02 13:09:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-12-02 13:09:19,948 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-12-02 13:09:19,949 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-12-02 13:09:19,949 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-12-02 13:09:19,949 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-12-02 13:09:19,949 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-12-02 13:09:19,949 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-12-02 13:09:19,949 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-12-02 13:09:19,949 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-12-02 13:09:19,950 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-12-02 13:09:19,950 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-12-02 13:09:19,950 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-12-02 13:09:19,950 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-02 13:09:19,950 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-02 13:09:19,950 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-02 13:09:19,951 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-02 13:09:19,951 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-12-02 13:09:19,951 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-12-02 13:09:19,951 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-02 13:09:19,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-02 13:09:19,951 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-12-02 13:09:19,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-12-02 13:09:19,952 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-12-02 13:09:19,952 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-12-02 13:09:19,952 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-12-02 13:09:19,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-12-02 13:09:19,952 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-12-02 13:09:19,952 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-12-02 13:09:19,952 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-12-02 13:09:19,952 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-12-02 13:09:19,953 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-12-02 13:09:19,953 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-12-02 13:09:19,953 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-12-02 13:09:19,953 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-12-02 13:09:19,953 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-12-02 13:09:19,953 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-12-02 13:09:19,953 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-12-02 13:09:19,954 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-12-02 13:09:19,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:09:19,954 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-12-02 13:09:19,954 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-12-02 13:09:19,954 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-12-02 13:09:19,954 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-12-02 13:09:19,955 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-12-02 13:09:19,955 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-12-02 13:09:19,955 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-12-02 13:09:19,955 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-12-02 13:09:19,955 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-12-02 13:09:19,955 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-12-02 13:09:19,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:09:19,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:09:19,956 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-12-02 13:09:19,956 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-12-02 13:09:20,107 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:09:20,110 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:09:21,100 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:09:21,859 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:09:21,859 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:09:21,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:09:21 BoogieIcfgContainer [2023-12-02 13:09:21,861 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:09:21,864 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:09:21,864 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:09:21,866 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:09:21,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:09:19" (1/3) ... [2023-12-02 13:09:21,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ccca135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:09:21, skipping insertion in model container [2023-12-02 13:09:21,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:19" (2/3) ... [2023-12-02 13:09:21,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ccca135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:09:21, skipping insertion in model container [2023-12-02 13:09:21,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:09:21" (3/3) ... [2023-12-02 13:09:21,869 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product23.cil.c [2023-12-02 13:09:21,886 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:09:21,886 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:09:21,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:09:21,946 INFO L357 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, mHoare=true, 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;@61a67adc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:09:21,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:09:21,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 404 states, 270 states have (on average 1.5703703703703704) internal successors, (424), 291 states have internal predecessors, (424), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) [2023-12-02 13:09:21,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 13:09:21,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:21,979 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:09:21,980 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:09:21,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:21,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1792611175, now seen corresponding path program 1 times [2023-12-02 13:09:21,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:09:21,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478805445] [2023-12-02 13:09:21,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:21,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:09:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:09:22,407 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 13:09:22,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:09:22,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478805445] [2023-12-02 13:09:22,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478805445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:09:22,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:09:22,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:09:22,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963458495] [2023-12-02 13:09:22,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:09:22,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 13:09:22,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:09:22,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 13:09:22,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:09:22,450 INFO L87 Difference]: Start difference. First operand has 404 states, 270 states have (on average 1.5703703703703704) internal successors, (424), 291 states have internal predecessors, (424), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 13:09:22,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:09:22,600 INFO L93 Difference]: Finished difference Result 422 states and 661 transitions. [2023-12-02 13:09:22,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 13:09:22,603 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 88 [2023-12-02 13:09:22,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:09:22,620 INFO L225 Difference]: With dead ends: 422 [2023-12-02 13:09:22,620 INFO L226 Difference]: Without dead ends: 400 [2023-12-02 13:09:22,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:09:22,628 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:09:22,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 589 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:09:22,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2023-12-02 13:09:22,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2023-12-02 13:09:22,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 268 states have (on average 1.5597014925373134) internal successors, (418), 287 states have internal predecessors, (418), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-02 13:09:22,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 623 transitions. [2023-12-02 13:09:22,709 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 623 transitions. Word has length 88 [2023-12-02 13:09:22,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:09:22,710 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 623 transitions. [2023-12-02 13:09:22,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-02 13:09:22,711 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 623 transitions. [2023-12-02 13:09:22,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 13:09:22,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:22,718 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:09:22,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:09:22,719 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:09:22,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:22,720 INFO L85 PathProgramCache]: Analyzing trace with hash 282478972, now seen corresponding path program 1 times [2023-12-02 13:09:22,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:09:22,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551436306] [2023-12-02 13:09:22,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:22,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:09:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:09:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 13:09:23,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:09:23,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551436306] [2023-12-02 13:09:23,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551436306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:09:23,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:09:23,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 13:09:23,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114082011] [2023-12-02 13:09:23,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:09:23,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:09:23,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:09:23,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:09:23,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:09:23,201 INFO L87 Difference]: Start difference. First operand 400 states and 623 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 13:09:25,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:09:25,627 INFO L93 Difference]: Finished difference Result 1217 states and 1930 transitions. [2023-12-02 13:09:25,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 13:09:25,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 89 [2023-12-02 13:09:25,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:09:25,636 INFO L225 Difference]: With dead ends: 1217 [2023-12-02 13:09:25,636 INFO L226 Difference]: Without dead ends: 840 [2023-12-02 13:09:25,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-02 13:09:25,643 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1216 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 2827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:09:25,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 1605 Invalid, 2827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 2370 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-02 13:09:25,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2023-12-02 13:09:25,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 791. [2023-12-02 13:09:25,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 540 states have (on average 1.5740740740740742) internal successors, (850), 573 states have internal predecessors, (850), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2023-12-02 13:09:25,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1253 transitions. [2023-12-02 13:09:25,723 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1253 transitions. Word has length 89 [2023-12-02 13:09:25,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:09:25,723 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1253 transitions. [2023-12-02 13:09:25,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 13:09:25,724 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1253 transitions. [2023-12-02 13:09:25,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-02 13:09:25,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:25,728 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:09:25,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 13:09:25,729 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:09:25,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:25,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1266997725, now seen corresponding path program 1 times [2023-12-02 13:09:25,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:09:25,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515129954] [2023-12-02 13:09:25,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:25,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:09:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:09:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 13:09:26,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:09:26,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515129954] [2023-12-02 13:09:26,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515129954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:09:26,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:09:26,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 13:09:26,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686159701] [2023-12-02 13:09:26,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:09:26,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:09:26,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:09:26,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:09:26,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:09:26,167 INFO L87 Difference]: Start difference. First operand 791 states and 1253 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 13:09:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:09:26,691 INFO L93 Difference]: Finished difference Result 862 states and 1365 transitions. [2023-12-02 13:09:26,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:09:26,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 93 [2023-12-02 13:09:26,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:09:26,700 INFO L225 Difference]: With dead ends: 862 [2023-12-02 13:09:26,700 INFO L226 Difference]: Without dead ends: 847 [2023-12-02 13:09:26,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:09:26,702 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 715 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:09:26,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1540 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:09:26,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-12-02 13:09:26,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 795. [2023-12-02 13:09:26,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 544 states have (on average 1.5698529411764706) internal successors, (854), 577 states have internal predecessors, (854), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2023-12-02 13:09:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1257 transitions. [2023-12-02 13:09:26,755 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1257 transitions. Word has length 93 [2023-12-02 13:09:26,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:09:26,755 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1257 transitions. [2023-12-02 13:09:26,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 13:09:26,756 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1257 transitions. [2023-12-02 13:09:26,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-02 13:09:26,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:26,759 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:09:26,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 13:09:26,760 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:09:26,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:26,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1545600453, now seen corresponding path program 1 times [2023-12-02 13:09:26,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:09:26,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486042071] [2023-12-02 13:09:26,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:26,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:09:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:09:27,085 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 13:09:27,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:09:27,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486042071] [2023-12-02 13:09:27,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486042071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:09:27,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:09:27,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 13:09:27,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079027182] [2023-12-02 13:09:27,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:09:27,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:09:27,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:09:27,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:09:27,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:09:27,088 INFO L87 Difference]: Start difference. First operand 795 states and 1257 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 13:09:27,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:09:27,263 INFO L93 Difference]: Finished difference Result 814 states and 1281 transitions. [2023-12-02 13:09:27,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:09:27,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) Word has length 98 [2023-12-02 13:09:27,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:09:27,270 INFO L225 Difference]: With dead ends: 814 [2023-12-02 13:09:27,270 INFO L226 Difference]: Without dead ends: 799 [2023-12-02 13:09:27,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:09:27,272 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 41 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 2891 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:09:27,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 2891 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:09:27,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-12-02 13:09:27,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 795. [2023-12-02 13:09:27,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 544 states have (on average 1.5661764705882353) internal successors, (852), 577 states have internal predecessors, (852), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2023-12-02 13:09:27,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1255 transitions. [2023-12-02 13:09:27,315 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1255 transitions. Word has length 98 [2023-12-02 13:09:27,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:09:27,315 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1255 transitions. [2023-12-02 13:09:27,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 13:09:27,316 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1255 transitions. [2023-12-02 13:09:27,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-02 13:09:27,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:27,319 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:09:27,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 13:09:27,319 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:09:27,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:27,319 INFO L85 PathProgramCache]: Analyzing trace with hash 804981927, now seen corresponding path program 1 times [2023-12-02 13:09:27,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:09:27,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641619950] [2023-12-02 13:09:27,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:27,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:09:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:09:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 13:09:29,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:09:29,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641619950] [2023-12-02 13:09:29,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641619950] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:09:29,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653304135] [2023-12-02 13:09:29,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:29,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:09:29,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:09:29,249 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:09:29,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 13:09:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:09:29,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 1822 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:09:29,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:09:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 13:09:29,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:09:29,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653304135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:09:29,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:09:29,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-12-02 13:09:29,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489954418] [2023-12-02 13:09:29,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:09:29,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:09:29,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:09:29,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:09:29,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-12-02 13:09:29,713 INFO L87 Difference]: Start difference. First operand 795 states and 1255 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-02 13:09:29,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:09:29,892 INFO L93 Difference]: Finished difference Result 878 states and 1379 transitions. [2023-12-02 13:09:29,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:09:29,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 105 [2023-12-02 13:09:29,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:09:29,920 INFO L225 Difference]: With dead ends: 878 [2023-12-02 13:09:29,920 INFO L226 Difference]: Without dead ends: 863 [2023-12-02 13:09:29,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-12-02 13:09:29,922 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 44 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:09:29,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 1814 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:09:29,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-12-02 13:09:29,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 799. [2023-12-02 13:09:29,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 548 states have (on average 1.562043795620438) internal successors, (856), 581 states have internal predecessors, (856), 201 states have call successors, (201), 49 states have call predecessors, (201), 49 states have return successors, (202), 193 states have call predecessors, (202), 196 states have call successors, (202) [2023-12-02 13:09:29,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1259 transitions. [2023-12-02 13:09:29,963 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1259 transitions. Word has length 105 [2023-12-02 13:09:29,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:09:29,964 INFO L495 AbstractCegarLoop]: Abstraction has 799 states and 1259 transitions. [2023-12-02 13:09:29,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-02 13:09:29,964 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1259 transitions. [2023-12-02 13:09:29,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 13:09:29,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:29,967 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:09:29,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:09:30,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:09:30,168 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:09:30,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:30,169 INFO L85 PathProgramCache]: Analyzing trace with hash 903499730, now seen corresponding path program 1 times [2023-12-02 13:09:30,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:09:30,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135435156] [2023-12-02 13:09:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:30,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:09:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:09:31,557 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-02 13:09:31,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:09:31,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135435156] [2023-12-02 13:09:31,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135435156] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:09:31,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394347123] [2023-12-02 13:09:31,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:31,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:09:31,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:09:31,559 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:09:31,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd007550-94c7-48fc-a297-bb3dc507ecc9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 13:09:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:09:31,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 1886 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-02 13:09:31,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:09:33,854 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 13:09:33,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:11:35,420 WARN L293 SmtUtils]: Spent 1.82m on a formula simplification. DAG size of input: 1441 DAG size of output: 51 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-12-02 13:13:22,232 WARN L293 SmtUtils]: Spent 1.77m on a formula simplification. DAG size of input: 1441 DAG size of output: 51 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-12-02 13:13:23,805 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-02 13:13:23,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394347123] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:13:23,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1815148387] [2023-12-02 13:13:23,826 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2023-12-02 13:13:23,826 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:13:23,829 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:13:23,833 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:13:23,833 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:14:21,629 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 566 for LOIs [2023-12-02 13:14:24,278 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 582 for LOIs [2023-12-02 13:18:16,624 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 582 for LOIs [2023-12-02 13:18:51,950 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 451 for LOIs [2023-12-02 13:18:59,156 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 452 for LOIs [2023-12-02 13:19:08,177 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 21 for LOIs [2023-12-02 13:19:08,204 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 58 for LOIs [2023-12-02 13:19:08,216 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 589 for LOIs [2023-12-02 13:19:22,315 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 543 for LOIs [2023-12-02 13:19:26,003 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 470 for LOIs [2023-12-02 13:19:39,381 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 466 for LOIs [2023-12-02 13:19:40,955 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 552 for LOIs [2023-12-02 13:19:53,649 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 644 for LOIs [2023-12-02 13:19:58,969 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 521 for LOIs [2023-12-02 13:20:00,667 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:20:15,498 WARN L293 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 589 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:20:28,874 WARN L293 SmtUtils]: Spent 7.55s on a formula simplification. DAG size of input: 565 DAG size of output: 531 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:20:40,056 WARN L293 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 591 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:20:54,060 WARN L293 SmtUtils]: Spent 13.29s on a formula simplification. DAG size of input: 644 DAG size of output: 604 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:21:35,818 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification. DAG size of input: 452 DAG size of output: 452 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:22:20,563 WARN L293 SmtUtils]: Spent 5.13s on a formula simplification that was a NOOP. DAG size: 596 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:22:51,855 WARN L293 SmtUtils]: Spent 7.11s on a formula simplification that was a NOOP. DAG size: 617 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:22:59,974 WARN L293 SmtUtils]: Spent 7.21s on a formula simplification that was a NOOP. DAG size: 617 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:23:39,297 WARN L293 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 474 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)