./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje --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 4d8d329904ea0b1d6316e01ffefe794d3e2b31dff55810a28221762d0c9b0f86 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:05:27,989 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:05:28,093 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:05:28,104 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:05:28,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:05:28,148 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:05:28,149 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:05:28,150 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:05:28,151 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:05:28,152 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:05:28,153 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:05:28,153 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:05:28,153 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:05:28,154 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:05:28,154 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:05:28,157 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:05:28,157 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:05:28,158 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:05:28,158 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:05:28,158 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:05:28,159 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:05:28,163 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:05:28,164 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:05:28,164 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:05:28,165 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:05:28,165 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:05:28,165 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:05:28,166 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:05:28,166 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:05:28,166 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:05:28,167 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:05:28,167 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:05:28,167 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:05:28,169 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:05:28,169 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:05:28,170 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:05:28,170 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:05:28,171 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:05:28,171 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:05:28,172 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:05:28,172 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:05:28,173 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:05:28,174 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:05:28,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:05:28,174 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:05:28,175 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:05:28,175 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:05:28,175 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_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d8d329904ea0b1d6316e01ffefe794d3e2b31dff55810a28221762d0c9b0f86 [2024-11-09 05:05:28,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:05:28,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:05:28,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:05:28,480 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:05:28,481 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:05:28,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c Unable to find full path for "g++" [2024-11-09 05:05:30,481 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:05:30,840 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:05:30,841 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c [2024-11-09 05:05:30,875 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/data/cb130c370/44eb9a0742aa4fea9ba50aa737bec21f/FLAG090c73f4c [2024-11-09 05:05:30,892 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/data/cb130c370/44eb9a0742aa4fea9ba50aa737bec21f [2024-11-09 05:05:30,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:05:30,899 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:05:30,900 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:05:30,901 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:05:30,907 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:05:30,908 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:05:30" (1/1) ... [2024-11-09 05:05:30,909 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b386cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:30, skipping insertion in model container [2024-11-09 05:05:30,910 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:05:30" (1/1) ... [2024-11-09 05:05:30,989 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:05:31,590 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_3a12c88d-bb83-498c-a70f-aca5cc5597e5/sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c[49188,49201] [2024-11-09 05:05:31,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:05:31,690 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:05:31,701 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2024-11-09 05:05:31,703 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [86] [2024-11-09 05:05:31,703 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [452] [2024-11-09 05:05:31,704 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [552] [2024-11-09 05:05:31,704 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [568] [2024-11-09 05:05:31,704 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [2078] [2024-11-09 05:05:31,705 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2260] [2024-11-09 05:05:31,705 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2269] [2024-11-09 05:05:31,705 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2934] [2024-11-09 05:05:31,705 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3053] [2024-11-09 05:05:31,783 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_3a12c88d-bb83-498c-a70f-aca5cc5597e5/sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c[49188,49201] [2024-11-09 05:05:31,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:05:31,896 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:05:31,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:31 WrapperNode [2024-11-09 05:05:31,897 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:05:31,898 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:05:31,898 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:05:31,898 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:05:31,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:31" (1/1) ... [2024-11-09 05:05:31,950 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:31" (1/1) ... [2024-11-09 05:05:32,029 INFO L138 Inliner]: procedures = 92, calls = 337, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1058 [2024-11-09 05:05:32,029 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:05:32,030 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:05:32,033 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:05:32,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:05:32,045 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:31" (1/1) ... [2024-11-09 05:05:32,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:31" (1/1) ... [2024-11-09 05:05:32,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:31" (1/1) ... [2024-11-09 05:05:32,056 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:31" (1/1) ... [2024-11-09 05:05:32,078 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:31" (1/1) ... [2024-11-09 05:05:32,102 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:31" (1/1) ... [2024-11-09 05:05:32,109 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:31" (1/1) ... [2024-11-09 05:05:32,117 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:31" (1/1) ... [2024-11-09 05:05:32,131 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:05:32,132 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:05:32,132 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:05:32,133 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:05:32,138 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:31" (1/1) ... [2024-11-09 05:05:32,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:05:32,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:05:32,179 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:05:32,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:05:32,220 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-09 05:05:32,220 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-09 05:05:32,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:05:32,221 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-09 05:05:32,222 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-09 05:05:32,222 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-09 05:05:32,222 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-09 05:05:32,223 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-09 05:05:32,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-09 05:05:32,223 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-09 05:05:32,223 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-09 05:05:32,224 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-09 05:05:32,225 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-09 05:05:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 05:05:32,225 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 05:05:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 05:05:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 05:05:32,227 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-09 05:05:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-09 05:05:32,228 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-09 05:05:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-09 05:05:32,228 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-09 05:05:32,229 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-09 05:05:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-09 05:05:32,229 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-09 05:05:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-09 05:05:32,230 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-09 05:05:32,231 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-09 05:05:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-09 05:05:32,231 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-09 05:05:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-09 05:05:32,231 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-09 05:05:32,231 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-09 05:05:32,231 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-09 05:05:32,232 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-09 05:05:32,232 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-09 05:05:32,232 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-09 05:05:32,232 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-09 05:05:32,232 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-09 05:05:32,233 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2024-11-09 05:05:32,233 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2024-11-09 05:05:32,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:05:32,233 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-09 05:05:32,233 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-09 05:05:32,234 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-09 05:05:32,234 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-09 05:05:32,234 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-09 05:05:32,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-09 05:05:32,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:05:32,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:05:32,236 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-09 05:05:32,236 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-09 05:05:32,406 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:05:32,409 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:05:34,036 INFO L? ?]: Removed 431 outVars from TransFormulas that were not future-live. [2024-11-09 05:05:34,037 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:05:35,076 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:05:35,076 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 05:05:35,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:05:35 BoogieIcfgContainer [2024-11-09 05:05:35,081 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:05:35,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:05:35,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:05:35,087 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:05:35,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:05:30" (1/3) ... [2024-11-09 05:05:35,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e59ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:05:35, skipping insertion in model container [2024-11-09 05:05:35,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:05:31" (2/3) ... [2024-11-09 05:05:35,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e59ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:05:35, skipping insertion in model container [2024-11-09 05:05:35,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:05:35" (3/3) ... [2024-11-09 05:05:35,089 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product03.cil.c [2024-11-09 05:05:35,109 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:05:35,110 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:05:35,201 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:05:35,209 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;@50473693, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:05:35,209 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:05:35,216 INFO L276 IsEmpty]: Start isEmpty. Operand has 375 states, 252 states have (on average 1.5952380952380953) internal successors, (402), 273 states have internal predecessors, (402), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-09 05:05:35,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-09 05:05:35,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:05:35,243 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] [2024-11-09 05:05:35,244 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:05:35,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:05:35,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1406097648, now seen corresponding path program 1 times [2024-11-09 05:05:35,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:05:35,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211479971] [2024-11-09 05:05:35,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:35,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:05:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:05:35,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:05:35,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211479971] [2024-11-09 05:05:35,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211479971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:05:35,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:05:35,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:05:35,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848138938] [2024-11-09 05:05:35,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:05:35,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 05:05:35,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:05:35,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 05:05:35,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:05:35,975 INFO L87 Difference]: Start difference. First operand has 375 states, 252 states have (on average 1.5952380952380953) internal successors, (402), 273 states have internal predecessors, (402), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-09 05:05:36,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:05:36,167 INFO L93 Difference]: Finished difference Result 393 states and 623 transitions. [2024-11-09 05:05:36,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 05:05:36,173 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 87 [2024-11-09 05:05:36,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:05:36,194 INFO L225 Difference]: With dead ends: 393 [2024-11-09 05:05:36,195 INFO L226 Difference]: Without dead ends: 371 [2024-11-09 05:05:36,198 INFO L431 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 [2024-11-09 05:05:36,203 INFO L432 NwaCegarLoop]: 556 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:05:36,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 556 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:05:36,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-09 05:05:36,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2024-11-09 05:05:36,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 250 states have (on average 1.584) internal successors, (396), 269 states have internal predecessors, (396), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-09 05:05:36,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 585 transitions. [2024-11-09 05:05:36,298 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 585 transitions. Word has length 87 [2024-11-09 05:05:36,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:05:36,300 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 585 transitions. [2024-11-09 05:05:36,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-09 05:05:36,301 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 585 transitions. [2024-11-09 05:05:36,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-09 05:05:36,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:05:36,307 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] [2024-11-09 05:05:36,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:05:36,308 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:05:36,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:05:36,308 INFO L85 PathProgramCache]: Analyzing trace with hash -155966771, now seen corresponding path program 1 times [2024-11-09 05:05:36,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:05:36,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987754260] [2024-11-09 05:05:36,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:36,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:05:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:05:37,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:05:37,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987754260] [2024-11-09 05:05:37,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987754260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:05:37,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:05:37,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 05:05:37,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553695485] [2024-11-09 05:05:37,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:05:37,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:05:37,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:05:37,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:05:37,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:05:37,175 INFO L87 Difference]: Start difference. First operand 371 states and 585 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 6 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-09 05:05:40,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:05:40,769 INFO L93 Difference]: Finished difference Result 1249 states and 2005 transitions. [2024-11-09 05:05:40,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 05:05:40,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 6 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 88 [2024-11-09 05:05:40,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:05:40,779 INFO L225 Difference]: With dead ends: 1249 [2024-11-09 05:05:40,781 INFO L226 Difference]: Without dead ends: 901 [2024-11-09 05:05:40,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-11-09 05:05:40,789 INFO L432 NwaCegarLoop]: 395 mSDtfsCounter, 1426 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 3246 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 3733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 3246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:05:40,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 2102 Invalid, 3733 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [487 Valid, 3246 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-09 05:05:40,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2024-11-09 05:05:40,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 849. [2024-11-09 05:05:40,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 594 states have (on average 1.6094276094276094) internal successors, (956), 629 states have internal predecessors, (956), 204 states have call successors, (204), 48 states have call predecessors, (204), 50 states have return successors, (205), 196 states have call predecessors, (205), 199 states have call successors, (205) [2024-11-09 05:05:40,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1365 transitions. [2024-11-09 05:05:40,925 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1365 transitions. Word has length 88 [2024-11-09 05:05:40,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:05:40,927 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1365 transitions. [2024-11-09 05:05:40,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 6 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-09 05:05:40,928 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1365 transitions. [2024-11-09 05:05:40,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-09 05:05:40,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:05:40,935 INFO L215 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] [2024-11-09 05:05:40,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:05:40,936 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:05:40,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:05:40,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1323205325, now seen corresponding path program 1 times [2024-11-09 05:05:40,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:05:40,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125335643] [2024-11-09 05:05:40,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:40,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:05:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:41,607 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 05:05:41,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:05:41,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125335643] [2024-11-09 05:05:41,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125335643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:05:41,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:05:41,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 05:05:41,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555238488] [2024-11-09 05:05:41,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:05:41,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:05:41,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:05:41,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:05:41,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:05:41,611 INFO L87 Difference]: Start difference. First operand 849 states and 1365 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) [2024-11-09 05:05:43,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:05:43,965 INFO L93 Difference]: Finished difference Result 1476 states and 2376 transitions. [2024-11-09 05:05:43,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:05:43,966 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 [2024-11-09 05:05:43,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:05:43,973 INFO L225 Difference]: With dead ends: 1476 [2024-11-09 05:05:43,974 INFO L226 Difference]: Without dead ends: 974 [2024-11-09 05:05:43,976 INFO L431 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 [2024-11-09 05:05:43,979 INFO L432 NwaCegarLoop]: 375 mSDtfsCounter, 1142 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 2180 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 2180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:05:43,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 1605 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 2180 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 05:05:43,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2024-11-09 05:05:44,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 865. [2024-11-09 05:05:44,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 604 states have (on average 1.6026490066225165) internal successors, (968), 642 states have internal predecessors, (968), 206 states have call successors, (206), 51 states have call predecessors, (206), 54 states have return successors, (213), 196 states have call predecessors, (213), 201 states have call successors, (213) [2024-11-09 05:05:44,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1387 transitions. [2024-11-09 05:05:44,052 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1387 transitions. Word has length 89 [2024-11-09 05:05:44,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:05:44,053 INFO L471 AbstractCegarLoop]: Abstraction has 865 states and 1387 transitions. [2024-11-09 05:05:44,053 INFO L472 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) [2024-11-09 05:05:44,053 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1387 transitions. [2024-11-09 05:05:44,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-09 05:05:44,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:05:44,055 INFO L215 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] [2024-11-09 05:05:44,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:05:44,056 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:05:44,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:05:44,056 INFO L85 PathProgramCache]: Analyzing trace with hash -628061091, now seen corresponding path program 1 times [2024-11-09 05:05:44,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:05:44,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252618252] [2024-11-09 05:05:44,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:44,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:05:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 05:05:44,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:05:44,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252618252] [2024-11-09 05:05:44,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252618252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:05:44,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:05:44,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:05:44,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826599700] [2024-11-09 05:05:44,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:05:44,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:05:44,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:05:44,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:05:44,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:05:44,456 INFO L87 Difference]: Start difference. First operand 865 states and 1387 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) [2024-11-09 05:05:45,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:05:45,127 INFO L93 Difference]: Finished difference Result 936 states and 1499 transitions. [2024-11-09 05:05:45,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:05:45,128 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 [2024-11-09 05:05:45,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:05:45,134 INFO L225 Difference]: With dead ends: 936 [2024-11-09 05:05:45,135 INFO L226 Difference]: Without dead ends: 921 [2024-11-09 05:05:45,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:05:45,137 INFO L432 NwaCegarLoop]: 545 mSDtfsCounter, 649 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:05:45,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1817 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:05:45,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2024-11-09 05:05:45,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 869. [2024-11-09 05:05:45,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 608 states have (on average 1.5986842105263157) internal successors, (972), 646 states have internal predecessors, (972), 206 states have call successors, (206), 51 states have call predecessors, (206), 54 states have return successors, (213), 196 states have call predecessors, (213), 201 states have call successors, (213) [2024-11-09 05:05:45,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1391 transitions. [2024-11-09 05:05:45,192 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1391 transitions. Word has length 93 [2024-11-09 05:05:45,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:05:45,193 INFO L471 AbstractCegarLoop]: Abstraction has 869 states and 1391 transitions. [2024-11-09 05:05:45,193 INFO L472 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) [2024-11-09 05:05:45,193 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1391 transitions. [2024-11-09 05:05:45,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-09 05:05:45,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:05:45,196 INFO L215 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] [2024-11-09 05:05:45,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:05:45,196 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:05:45,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:05:45,197 INFO L85 PathProgramCache]: Analyzing trace with hash -893212395, now seen corresponding path program 1 times [2024-11-09 05:05:45,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:05:45,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288976769] [2024-11-09 05:05:45,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:45,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:05:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:45,509 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 05:05:45,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:05:45,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288976769] [2024-11-09 05:05:45,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288976769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:05:45,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:05:45,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:05:45,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348100779] [2024-11-09 05:05:45,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:05:45,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:05:45,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:05:45,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:05:45,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:05:45,515 INFO L87 Difference]: Start difference. First operand 869 states and 1391 transitions. Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 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) [2024-11-09 05:05:45,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:05:45,693 INFO L93 Difference]: Finished difference Result 884 states and 1409 transitions. [2024-11-09 05:05:45,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:05:45,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 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 [2024-11-09 05:05:45,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:05:45,700 INFO L225 Difference]: With dead ends: 884 [2024-11-09 05:05:45,700 INFO L226 Difference]: Without dead ends: 869 [2024-11-09 05:05:45,701 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 [2024-11-09 05:05:45,702 INFO L432 NwaCegarLoop]: 552 mSDtfsCounter, 0 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:05:45,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2206 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:05:45,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2024-11-09 05:05:45,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 869. [2024-11-09 05:05:45,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 608 states have (on average 1.5953947368421053) internal successors, (970), 646 states have internal predecessors, (970), 206 states have call successors, (206), 51 states have call predecessors, (206), 54 states have return successors, (213), 196 states have call predecessors, (213), 201 states have call successors, (213) [2024-11-09 05:05:45,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1389 transitions. [2024-11-09 05:05:45,760 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1389 transitions. Word has length 98 [2024-11-09 05:05:45,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:05:45,762 INFO L471 AbstractCegarLoop]: Abstraction has 869 states and 1389 transitions. [2024-11-09 05:05:45,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 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) [2024-11-09 05:05:45,763 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1389 transitions. [2024-11-09 05:05:45,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-09 05:05:45,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:05:45,766 INFO L215 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] [2024-11-09 05:05:45,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:05:45,767 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:05:45,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:05:45,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1103474449, now seen corresponding path program 1 times [2024-11-09 05:05:45,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:05:45,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81568983] [2024-11-09 05:05:45,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:45,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:05:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:50,278 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 05:05:50,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:05:50,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81568983] [2024-11-09 05:05:50,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81568983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:05:50,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466416911] [2024-11-09 05:05:50,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:50,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:05:50,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:05:50,285 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:05:50,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:05:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:50,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:05:50,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:05:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 05:05:50,877 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:05:50,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466416911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:05:50,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:05:50,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [26] total 28 [2024-11-09 05:05:50,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153889982] [2024-11-09 05:05:50,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:05:50,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:05:50,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:05:50,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:05:50,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2024-11-09 05:05:50,884 INFO L87 Difference]: Start difference. First operand 869 states and 1389 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) [2024-11-09 05:05:51,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:05:51,059 INFO L93 Difference]: Finished difference Result 888 states and 1413 transitions. [2024-11-09 05:05:51,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:05:51,060 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 [2024-11-09 05:05:51,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:05:51,065 INFO L225 Difference]: With dead ends: 888 [2024-11-09 05:05:51,066 INFO L226 Difference]: Without dead ends: 873 [2024-11-09 05:05:51,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2024-11-09 05:05:51,068 INFO L432 NwaCegarLoop]: 552 mSDtfsCounter, 0 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:05:51,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1646 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:05:51,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2024-11-09 05:05:51,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 873. [2024-11-09 05:05:51,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 612 states have (on average 1.591503267973856) internal successors, (974), 650 states have internal predecessors, (974), 206 states have call successors, (206), 51 states have call predecessors, (206), 54 states have return successors, (213), 196 states have call predecessors, (213), 201 states have call successors, (213) [2024-11-09 05:05:51,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1393 transitions. [2024-11-09 05:05:51,123 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1393 transitions. Word has length 105 [2024-11-09 05:05:51,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:05:51,124 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1393 transitions. [2024-11-09 05:05:51,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (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) [2024-11-09 05:05:51,124 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1393 transitions. [2024-11-09 05:05:51,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-09 05:05:51,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:05:51,128 INFO L215 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] [2024-11-09 05:05:51,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:05:51,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:05:51,329 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:05:51,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:05:51,329 INFO L85 PathProgramCache]: Analyzing trace with hash 591026745, now seen corresponding path program 1 times [2024-11-09 05:05:51,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:05:51,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900442609] [2024-11-09 05:05:51,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:51,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:05:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:52,992 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-09 05:05:52,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:05:52,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900442609] [2024-11-09 05:05:52,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900442609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:05:52,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218806258] [2024-11-09 05:05:52,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:05:52,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:05:52,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:05:52,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:05:52,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:05:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:05:53,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 05:05:53,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:05:54,170 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 05:05:54,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:06:03,953 WARN L286 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 2228 DAG size of output: 10 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 05:08:07,312 WARN L286 SmtUtils]: Spent 2.05m on a formula simplification. DAG size of input: 1439 DAG size of output: 49 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 05:10:11,419 WARN L286 SmtUtils]: Spent 2.06m on a formula simplification. DAG size of input: 1439 DAG size of output: 49 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 05:10:18,199 WARN L286 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 2228 DAG size of output: 10 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-09 05:10:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-09 05:10:18,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218806258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:10:18,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1506980246] [2024-11-09 05:10:18,287 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2024-11-09 05:10:18,290 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:10:18,294 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:10:18,299 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:10:18,299 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:10:35,823 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 434 for LOIs [2024-11-09 05:10:36,049 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 576 for LOIs [2024-11-09 05:11:07,347 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 576 for LOIs [2024-11-09 05:11:32,663 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 447 for LOIs [2024-11-09 05:11:38,661 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 448 for LOIs [2024-11-09 05:11:45,394 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 24 for LOIs [2024-11-09 05:11:45,413 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 54 for LOIs [2024-11-09 05:11:45,422 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 585 for LOIs [2024-11-09 05:11:55,656 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 460 for LOIs [2024-11-09 05:11:55,936 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 455 for LOIs [2024-11-09 05:11:58,673 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 451 for LOIs [2024-11-09 05:11:58,939 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 548 for LOIs [2024-11-09 05:12:08,363 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 640 for LOIs [2024-11-09 05:12:12,594 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 517 for LOIs [2024-11-09 05:12:13,996 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:12:32,931 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 585 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:12:38,785 WARN L286 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 517 DAG size of output: 514 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:12:47,785 WARN L286 SmtUtils]: Spent 8.15s on a formula simplification. DAG size of input: 551 DAG size of output: 521 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:12:54,940 WARN L286 SmtUtils]: Spent 6.83s on a formula simplification that was a NOOP. DAG size: 587 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:13:01,953 WARN L286 SmtUtils]: Spent 6.62s on a formula simplification that was a NOOP. DAG size: 587 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:13:20,373 WARN L286 SmtUtils]: Spent 16.74s on a formula simplification. DAG size of input: 640 DAG size of output: 600 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:13:44,963 WARN L286 SmtUtils]: Spent 5.02s on a formula simplification that was a NOOP. DAG size: 550 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:13:58,527 WARN L286 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 576 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:14:09,501 WARN L286 SmtUtils]: Spent 10.03s on a formula simplification. DAG size of input: 448 DAG size of output: 448 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:14:16,703 WARN L286 SmtUtils]: Spent 5.86s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:14:22,525 WARN L286 SmtUtils]: Spent 5.33s on a formula simplification that was a NOOP. DAG size: 582 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:14:29,820 WARN L286 SmtUtils]: Spent 5.72s on a formula simplification that was a NOOP. DAG size: 588 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:14:36,263 WARN L286 SmtUtils]: Spent 5.84s on a formula simplification that was a NOOP. DAG size: 588 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:14:42,764 WARN L286 SmtUtils]: Spent 5.85s on a formula simplification that was a NOOP. DAG size: 588 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:14:49,274 WARN L286 SmtUtils]: Spent 5.89s on a formula simplification that was a NOOP. DAG size: 588 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:14:55,671 WARN L286 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 586 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:15:28,600 WARN L286 SmtUtils]: Spent 5.97s on a formula simplification that was a NOOP. DAG size: 596 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:15:35,177 WARN L286 SmtUtils]: Spent 5.94s on a formula simplification that was a NOOP. DAG size: 596 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:16:03,880 WARN L286 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 619 DAG size of output: 617 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:16:10,314 WARN L286 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 621 DAG size of output: 619 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:16:17,355 WARN L286 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 624 DAG size of output: 622 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:16:23,793 WARN L286 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 626 DAG size of output: 624 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:16:30,524 WARN L286 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 628 DAG size of output: 626 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:16:37,875 WARN L286 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 630 DAG size of output: 628 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:16:44,417 WARN L286 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 632 DAG size of output: 615 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:16:50,807 WARN L286 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 632 DAG size of output: 615 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:18:59,670 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15919#(and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= (select (select |#memory_int| 28) 2) 105) (= 32 (select (select |#memory_int| 28) 0)) (= 30 (select |#length| 7)) (= (select |#valid| 30) 1) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select (select |#memory_int| 31) 2) 105) (= (select |#valid| 15) 1) (= ~executiveFloor~0 4) (<= 0 (+ ~currentFloorID~0 2147483648)) (<= 1 |#StackHeapBarrier|) (= (select (select |#memory_int| 34) 2) 105) (= 32 (select (select |#memory_int| 34) 0)) (= ~floorButtons_3~0 0) (= 10 (select |#length| 16)) (= (select |#length| 33) 4) (= (select |#valid| 26) 1) (= (select (select |#memory_int| 26) 3) 0) (= (select (select |#memory_int| 20) 2) 0) (= 3 (select |#length| 20)) (= (select |#valid| 35) 1) (= (select |#valid| 9) 1) (= (select (select |#memory_int| 24) 1) 73) (= (select (select |#memory_int| 23) 3) 110) (= 91 (select (select |#memory_int| 18) 0)) (= (select |#length| 12) 25) (= (select (select |#memory_int| 25) 3) 0) (= 91 (select (select |#memory_int| 17) 0)) (= (select (select |#memory_int| 30) 4) 58) (= (select |#valid| 11) 1) (= (select |#valid| 27) 1) (= (select |#valid| 33) 1) (= (select (select |#memory_int| 32) 2) 105) (= 30 (select |#length| 4)) (= (select (select |#memory_int| 29) 2) 105) (= (select |#length| 28) 4) (= 4 (select |#length| 31)) (= (select |#length| 27) 4) (= (select |#length| 22) 3) (<= ~currentFloorID~0 2147483647) (= ~calls_3~0 0) (= 4 (select |#length| 26)) (= 6 (select |#length| 30)) (= ~calls_0~0 0) (= 112 (select (select |#memory_int| 22) 1)) (= (select (select |#memory_int| 17) 2) 93) (= 31 (select |#length| 2)) (= (select (select |#memory_int| 27) 3) 0) (= 76 (select (select |#memory_int| 24) 2)) (= ~head~0.offset 0) (= (select (select |#memory_int| 32) 3) 0) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select (select |#memory_int| 28) 3) 0) (= (select (select |#memory_int| 29) 3) 0) (= 95 (select (select |#memory_int| 30) 2)) (= 32 (select (select |#memory_int| 30) 0)) (= (select (select |#memory_int| 30) 1) 70) (= 4 (select |#length| 25)) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= (select |#valid| 18) 1) (= ~calls_1~0 0) (= (select |#valid| 22) 1) (= 30 (select |#length| 13)) (= (select (select |#memory_int| 18) 3) 0) (= 2 (select |#length| 36)) (= (select (select |#memory_int| 26) 2) 105) (= (select (select |#memory_int| 34) 1) 37) (= (select (select |#memory_int| 19) 4) 0) (= (select |#valid| 24) 1) (= 30 (select |#length| 10)) (= (select (select |#memory_int| 29) 1) 37) (not (= ~landingButtons_spc1_0~0 0)) (= (select (select |#memory_int| 25) 1) 37) (= (select (select |#memory_int| 17) 3) 0) (= 4 (select |#length| 34)) (= (select |#valid| 12) 1) (= (select |#valid| 32) 1) (= (select (select |#memory_int| 31) 1) 37) (= ~floorButtons_2~0 0) (= (select |#valid| 28) 1) (= (select (select |#memory_int| 18) 2) 32) (= (select (select |#memory_int| 25) 2) 105) (= (select |#length| 17) 4) (= (select (select |#memory_int| 27) 1) 37) (= (select |#length| 35) 4) (= (select |#valid| 4) 1) (= 5 (select |#length| 23)) (= (select (select |#memory_int| 35) 3) 0) (= 119 (select (select |#memory_int| 23) 2)) (= 32 (select (select |#memory_int| 24) 0)) (= 32 (select (select |#memory_int| 26) 0)) (= (select (select |#memory_int| 32) 1) 37) (= (select (select |#memory_int| 28) 1) 37) (<= 0 (+ ~calls_4~0 2147483648)) (= (select (select |#memory_int| 30) 5) 0) (= (select (select |#memory_int| 22) 2) 0) (= (select (select |#memory_int| 20) 1) 105) (= (select (select |#memory_int| 33) 3) 0) (= (select |#valid| 1) 1) (= (select |#valid| 20) 1) (<= ~calls_4~0 2147483647) (= 97 (select (select |#memory_int| 19) 1)) (= ~floorButtons_1~0 0) (= 32 (select (select |#memory_int| 35) 0)) (= (select |#length| 6) 21) (= (select (select |#memory_int| 36) 1) 0) (= (select (select |#memory_int| 23) 0) 100) (= (select |#valid| 21) 1) (= 7 (select |#length| 24)) (= 58 (select (select |#memory_int| 24) 5)) (= ~floorButtons_0~0 0) (= (select (select |#memory_int| 24) 6) 0) (= (select (select |#memory_int| 31) 0) 32) (= (select (select |#memory_int| 33) 1) 37) (= 32 (select (select |#memory_int| 27) 0)) (= (select |#valid| 14) 1) (= 95 (select (select |#memory_int| 24) 3)) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= (select (select |#memory_int| 33) 0) 32) (= (select (select |#memory_int| 35) 1) 37) (= (select |#valid| 25) 1) (= 4 (select |#length| 18)) (= ~head~0.base 0) (= (select |#length| 32) 4) (= 112 (select (select |#memory_int| 24) 4)) (= (select (select |#memory_int| 17) 1) 95) (= (select (select |#memory_int| 34) 3) 0) (= (select |#valid| 2) 1) (= (select |#valid| 36) 1) (= 9 (select |#length| 11)) (= (select |#length| 29) 4) (= (select (select |#memory_int| 1) 0) 48) (= (select |#valid| 23) 1) (= 32 (select (select |#memory_int| 29) 0)) (= (select (select |#memory_int| 26) 1) 37) (= 112 (select (select |#memory_int| 30) 3)) (= (select (select |#memory_int| 23) 4) 0) (= (select |#valid| 19) 1) (= 32 (select (select |#memory_int| 19) 3)) (= (select |#valid| 31) 1) (= (select |#valid| 34) 1) (= (select (select |#memory_int| 33) 2) 105) (= (select (select |#memory_int| 27) 2) 105) (= (select |#valid| 16) 1) (exists ((|v_cleanup_~tmp~22#1_14| Int)) (and (<= |v_cleanup_~tmp~22#1_14| 2147483647) (<= 0 (+ |v_cleanup_~tmp~22#1_14| 2147483648)) (not (= |v_cleanup_~tmp~22#1_14| 0)))) (= 111 (select (select |#memory_int| 23) 1)) (= 116 (select (select |#memory_int| 19) 2)) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 20) 0) 37) (= (select (select |#memory_int| 1) 1) 0) (= (select (select |#memory_int| 36) 0) 10) (= ~calls_2~0 0) (= (select |#valid| 29) 1) (= (select (select |#memory_int| 22) 0) 117) (= (select (select |#memory_int| 25) 0) 32) (= (select (select |#memory_int| 31) 3) 0) (= (select |#length| 21) 10) (= (select |#valid| 17) 1) (= 93 (select (select |#memory_int| 18) 1)) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= 32 (select (select |#memory_int| 19) 0)) (= (select |#length| 19) 5) (= (select |#valid| 13) 1) (= ~cleanupTimeShifts~0 12) (= (select (select |#memory_int| 35) 2) 105) (= 32 (select (select |#memory_int| 32) 0)))' at error location [2024-11-09 05:18:59,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:18:59,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:18:59,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 12] total 34 [2024-11-09 05:18:59,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589005330] [2024-11-09 05:18:59,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:18:59,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-09 05:18:59,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:18:59,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-09 05:18:59,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=944, Invalid=11938, Unknown=0, NotChecked=0, Total=12882 [2024-11-09 05:18:59,678 INFO L87 Difference]: Start difference. First operand 873 states and 1393 transitions. Second operand has 34 states, 24 states have (on average 6.916666666666667) internal successors, (166), 28 states have internal predecessors, (166), 14 states have call successors, (56), 7 states have call predecessors, (56), 20 states have return successors, (58), 20 states have call predecessors, (58), 13 states have call successors, (58) [2024-11-09 05:19:20,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:19:20,828 INFO L93 Difference]: Finished difference Result 4544 states and 7337 transitions. [2024-11-09 05:19:20,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-09 05:19:20,829 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 24 states have (on average 6.916666666666667) internal successors, (166), 28 states have internal predecessors, (166), 14 states have call successors, (56), 7 states have call predecessors, (56), 20 states have return successors, (58), 20 states have call predecessors, (58), 13 states have call successors, (58) Word has length 128 [2024-11-09 05:19:20,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:19:20,860 INFO L225 Difference]: With dead ends: 4544 [2024-11-09 05:19:20,860 INFO L226 Difference]: Without dead ends: 3700 [2024-11-09 05:19:20,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 306 SyntacticMatches, 3 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12064 ImplicationChecksByTransitivity, 410.9s TimeCoverageRelationStatistics Valid=2411, Invalid=29451, Unknown=0, NotChecked=0, Total=31862 [2024-11-09 05:19:20,875 INFO L432 NwaCegarLoop]: 619 mSDtfsCounter, 4320 mSDsluCounter, 9589 mSDsCounter, 0 mSdLazyCounter, 22923 mSolverCounterSat, 1724 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4367 SdHoareTripleChecker+Valid, 10208 SdHoareTripleChecker+Invalid, 24647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1724 IncrementalHoareTripleChecker+Valid, 22923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:19:20,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4367 Valid, 10208 Invalid, 24647 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1724 Valid, 22923 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2024-11-09 05:19:20,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3700 states. [2024-11-09 05:19:21,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3700 to 3266. [2024-11-09 05:19:21,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3266 states, 2343 states have (on average 1.6000853606487409) internal successors, (3749), 2476 states have internal predecessors, (3749), 717 states have call successors, (717), 179 states have call predecessors, (717), 205 states have return successors, (787), 685 states have call predecessors, (787), 712 states have call successors, (787) [2024-11-09 05:19:21,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3266 states to 3266 states and 5253 transitions. [2024-11-09 05:19:21,192 INFO L78 Accepts]: Start accepts. Automaton has 3266 states and 5253 transitions. Word has length 128 [2024-11-09 05:19:21,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:19:21,193 INFO L471 AbstractCegarLoop]: Abstraction has 3266 states and 5253 transitions. [2024-11-09 05:19:21,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 24 states have (on average 6.916666666666667) internal successors, (166), 28 states have internal predecessors, (166), 14 states have call successors, (56), 7 states have call predecessors, (56), 20 states have return successors, (58), 20 states have call predecessors, (58), 13 states have call successors, (58) [2024-11-09 05:19:21,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3266 states and 5253 transitions. [2024-11-09 05:19:21,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-09 05:19:21,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:19:21,210 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:19:21,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:19:21,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:19:21,411 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:19:21,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:19:21,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1145708408, now seen corresponding path program 1 times [2024-11-09 05:19:21,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:19:21,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749146968] [2024-11-09 05:19:21,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:19:21,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:19:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:19:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-09 05:19:21,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:19:21,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749146968] [2024-11-09 05:19:21,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749146968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:19:21,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:19:21,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:19:21,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084462198] [2024-11-09 05:19:21,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:19:21,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:19:21,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:19:21,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:19:21,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:19:21,747 INFO L87 Difference]: Start difference. First operand 3266 states and 5253 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-09 05:19:22,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:19:22,215 INFO L93 Difference]: Finished difference Result 5773 states and 9278 transitions. [2024-11-09 05:19:22,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:19:22,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 161 [2024-11-09 05:19:22,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:19:22,238 INFO L225 Difference]: With dead ends: 5773 [2024-11-09 05:19:22,238 INFO L226 Difference]: Without dead ends: 3355 [2024-11-09 05:19:22,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:19:22,249 INFO L432 NwaCegarLoop]: 551 mSDtfsCounter, 0 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:19:22,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2731 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:19:22,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3355 states. [2024-11-09 05:19:22,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3355 to 3331. [2024-11-09 05:19:22,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3331 states, 2395 states have (on average 1.5870563674321503) internal successors, (3801), 2528 states have internal predecessors, (3801), 717 states have call successors, (717), 179 states have call predecessors, (717), 218 states have return successors, (813), 698 states have call predecessors, (813), 712 states have call successors, (813) [2024-11-09 05:19:22,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3331 states to 3331 states and 5331 transitions. [2024-11-09 05:19:22,528 INFO L78 Accepts]: Start accepts. Automaton has 3331 states and 5331 transitions. Word has length 161 [2024-11-09 05:19:22,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:19:22,529 INFO L471 AbstractCegarLoop]: Abstraction has 3331 states and 5331 transitions. [2024-11-09 05:19:22,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-09 05:19:22,529 INFO L276 IsEmpty]: Start isEmpty. Operand 3331 states and 5331 transitions. [2024-11-09 05:19:22,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-09 05:19:22,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:19:22,540 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 05:19:22,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 05:19:22,540 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:19:22,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:19:22,541 INFO L85 PathProgramCache]: Analyzing trace with hash 570300122, now seen corresponding path program 1 times [2024-11-09 05:19:22,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:19:22,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406929350] [2024-11-09 05:19:22,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:19:22,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:19:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:19:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-09 05:19:22,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:19:22,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406929350] [2024-11-09 05:19:22,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406929350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:19:22,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973077836] [2024-11-09 05:19:22,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:19:22,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:19:22,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:19:22,944 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:19:22,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a12c88d-bb83-498c-a70f-aca5cc5597e5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:19:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:19:23,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 2141 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:19:23,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:19:23,778 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-09 05:19:23,779 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:19:24,282 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-09 05:19:24,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973077836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:19:24,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1477643509] [2024-11-09 05:19:24,286 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2024-11-09 05:19:24,287 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:19:24,287 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:19:24,288 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:19:24,288 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs