./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --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 b7f63e91390dfc262975e205f156f8c4cc9b5ede7dbe2a20685844995f7cce81 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:26:34,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:26:34,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:26:34,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:26:34,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:26:34,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:26:34,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:26:34,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:26:34,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:26:34,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:26:34,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:26:34,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:26:34,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:26:34,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:26:34,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:26:34,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:26:34,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:26:34,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:26:34,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:26:34,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:26:34,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:26:34,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:26:34,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:26:34,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:26:34,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:26:34,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:26:34,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:26:34,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:26:34,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:26:34,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:26:34,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:26:34,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:26:34,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:26:34,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:26:34,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:26:34,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:26:34,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:26:34,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:26:34,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:26:34,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:26:34,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:26:34,526 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:26:34,570 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:26:34,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:26:34,571 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:26:34,571 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:26:34,572 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:26:34,573 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:26:34,573 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:26:34,573 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:26:34,574 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:26:34,574 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:26:34,575 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:26:34,575 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:26:34,575 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:26:34,576 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:26:34,576 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:26:34,576 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:26:34,577 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:26:34,577 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:26:34,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:26:34,579 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:26:34,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:26:34,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:26:34,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:26:34,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:26:34,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:26:34,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:26:34,590 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:26:34,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:26:34,591 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:26:34,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:26:34,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:26:34,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:26:34,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:26:34,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:26:34,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:26:34,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:26:34,594 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:26:34,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:26:34,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:26:34,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:26:34,595 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:26:34,595 INFO L138 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_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7f63e91390dfc262975e205f156f8c4cc9b5ede7dbe2a20685844995f7cce81 [2021-11-25 19:26:34,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:26:34,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:26:34,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:26:34,935 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:26:34,936 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:26:34,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c [2021-11-25 19:26:35,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/data/342077d0b/0447840844b742b7888d71897f31d050/FLAGee7653ec5 [2021-11-25 19:26:35,458 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.parser.UltimateCdtExternalSettingsProvider.getSettings(UltimateCdtExternalSettingsProvider.java:67) at org.eclipse.cdt.core.settings.model.extension.CExternalSettingProvider.getSettings(CExternalSettingProvider.java:48) at org.eclipse.cdt.internal.core.settings.model.ExtensionContainerFactory$CExtensionSettingProviderDescriptor.getContainer(ExtensionContainerFactory.java:110) at org.eclipse.cdt.internal.core.settings.model.ExtensionContainerFactory.createContainer(ExtensionContainerFactory.java:186) at org.eclipse.cdt.internal.core.settings.model.CExternalSettingsManager$ContainerDescriptor.(CExternalSettingsManager.java:147) at org.eclipse.cdt.internal.core.settings.model.CExternalSettingsManager.checkExternalSettingsChange(CExternalSettingsManager.java:683) at org.eclipse.cdt.internal.core.settings.model.CExternalSettingsManager.processContainerChange(CExternalSettingsManager.java:501) at org.eclipse.cdt.internal.core.settings.model.CExternalSettingsManager$2.run(CExternalSettingsManager.java:615) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager$5.run(CProjectDescriptionManager.java:508) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2292) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager.runAtomic(CProjectDescriptionManager.java:504) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager$4.run(CProjectDescriptionManager.java:484) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-25 19:26:35,773 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:26:35,774 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c [2021-11-25 19:26:35,816 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/data/342077d0b/0447840844b742b7888d71897f31d050/FLAGee7653ec5 [2021-11-25 19:26:36,005 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/data/342077d0b/0447840844b742b7888d71897f31d050 [2021-11-25 19:26:36,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:26:36,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:26:36,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:26:36,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:26:36,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:26:36,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:26:36" (1/1) ... [2021-11-25 19:26:36,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45701224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:36, skipping insertion in model container [2021-11-25 19:26:36,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:26:36" (1/1) ... [2021-11-25 19:26:36,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:26:36,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:26:36,683 WARN L230 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_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c[62576,62589] [2021-11-25 19:26:36,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:26:36,752 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:26:36,923 WARN L230 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_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c[62576,62589] [2021-11-25 19:26:36,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:26:36,969 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:26:36,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:36 WrapperNode [2021-11-25 19:26:36,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:26:36,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:26:36,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:26:36,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:26:36,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:36" (1/1) ... [2021-11-25 19:26:37,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:36" (1/1) ... [2021-11-25 19:26:37,131 INFO L137 Inliner]: procedures = 94, calls = 352, calls flagged for inlining = 25, calls inlined = 21, statements flattened = 1112 [2021-11-25 19:26:37,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:26:37,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:26:37,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:26:37,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:26:37,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:36" (1/1) ... [2021-11-25 19:26:37,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:36" (1/1) ... [2021-11-25 19:26:37,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:36" (1/1) ... [2021-11-25 19:26:37,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:36" (1/1) ... [2021-11-25 19:26:37,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:36" (1/1) ... [2021-11-25 19:26:37,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:36" (1/1) ... [2021-11-25 19:26:37,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:36" (1/1) ... [2021-11-25 19:26:37,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:26:37,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:26:37,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:26:37,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:26:37,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:36" (1/1) ... [2021-11-25 19:26:37,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:26:37,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:37,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:26:37,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:26:37,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:26:37,366 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2021-11-25 19:26:37,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2021-11-25 19:26:37,366 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-11-25 19:26:37,367 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-11-25 19:26:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2021-11-25 19:26:37,367 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2021-11-25 19:26:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-11-25 19:26:37,367 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-11-25 19:26:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-11-25 19:26:37,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-11-25 19:26:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-11-25 19:26:37,368 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-11-25 19:26:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2021-11-25 19:26:37,368 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2021-11-25 19:26:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-11-25 19:26:37,368 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-11-25 19:26:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-25 19:26:37,368 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-25 19:26:37,369 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-25 19:26:37,369 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-25 19:26:37,369 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-25 19:26:37,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-25 19:26:37,369 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-11-25 19:26:37,369 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-11-25 19:26:37,369 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-11-25 19:26:37,370 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-11-25 19:26:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-11-25 19:26:37,370 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-11-25 19:26:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-11-25 19:26:37,370 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-11-25 19:26:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2021-11-25 19:26:37,370 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2021-11-25 19:26:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-11-25 19:26:37,370 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-11-25 19:26:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2021-11-25 19:26:37,370 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2021-11-25 19:26:37,371 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-11-25 19:26:37,371 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-11-25 19:26:37,371 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-11-25 19:26:37,371 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-11-25 19:26:37,371 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-11-25 19:26:37,371 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-11-25 19:26:37,371 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-11-25 19:26:37,372 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-11-25 19:26:37,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:26:37,372 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-11-25 19:26:37,372 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-11-25 19:26:37,372 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-11-25 19:26:37,372 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-11-25 19:26:37,373 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-11-25 19:26:37,373 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-11-25 19:26:37,373 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-11-25 19:26:37,373 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-11-25 19:26:37,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:26:37,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:26:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-11-25 19:26:37,374 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-11-25 19:26:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2021-11-25 19:26:37,374 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2021-11-25 19:26:37,555 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:26:37,557 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:26:38,738 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:26:39,364 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:26:39,365 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:26:39,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:26:39 BoogieIcfgContainer [2021-11-25 19:26:39,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:26:39,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:26:39,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:26:39,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:26:39,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:26:36" (1/3) ... [2021-11-25 19:26:39,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f0994a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:26:39, skipping insertion in model container [2021-11-25 19:26:39,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:36" (2/3) ... [2021-11-25 19:26:39,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f0994a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:26:39, skipping insertion in model container [2021-11-25 19:26:39,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:26:39" (3/3) ... [2021-11-25 19:26:39,380 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product20.cil.c [2021-11-25 19:26:39,386 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:26:39,386 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:26:39,460 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:26:39,470 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:26:39,471 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:26:39,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 417 states, 277 states have (on average 1.5667870036101084) internal successors, (434), 297 states have internal predecessors, (434), 110 states have call successors, (110), 28 states have call predecessors, (110), 28 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2021-11-25 19:26:39,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 19:26:39,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:39,538 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:26:39,539 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:26:39,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:39,545 INFO L85 PathProgramCache]: Analyzing trace with hash -280330475, now seen corresponding path program 1 times [2021-11-25 19:26:39,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:39,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120001149] [2021-11-25 19:26:39,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:39,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:40,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:26:40,164 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:40,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120001149] [2021-11-25 19:26:40,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120001149] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:40,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863229948] [2021-11-25 19:26:40,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:40,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:40,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:40,168 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:40,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:26:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:40,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 1480 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:26:40,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:40,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:26:40,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863229948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:40,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:26:40,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-25 19:26:40,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691332634] [2021-11-25 19:26:40,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:40,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:26:40,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:40,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:26:40,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:26:40,849 INFO L87 Difference]: Start difference. First operand has 417 states, 277 states have (on average 1.5667870036101084) internal successors, (434), 297 states have internal predecessors, (434), 110 states have call successors, (110), 28 states have call predecessors, (110), 28 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 19:26:41,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:41,350 INFO L93 Difference]: Finished difference Result 1174 states and 1866 transitions. [2021-11-25 19:26:41,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:26:41,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2021-11-25 19:26:41,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:41,397 INFO L225 Difference]: With dead ends: 1174 [2021-11-25 19:26:41,398 INFO L226 Difference]: Without dead ends: 759 [2021-11-25 19:26:41,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:26:41,426 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 554 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:41,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 1328 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:26:41,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2021-11-25 19:26:41,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 747. [2021-11-25 19:26:41,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 501 states have (on average 1.558882235528942) internal successors, (781), 536 states have internal predecessors, (781), 195 states have call successors, (195), 51 states have call predecessors, (195), 50 states have return successors, (197), 187 states have call predecessors, (197), 192 states have call successors, (197) [2021-11-25 19:26:41,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1173 transitions. [2021-11-25 19:26:41,622 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1173 transitions. Word has length 50 [2021-11-25 19:26:41,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:41,623 INFO L470 AbstractCegarLoop]: Abstraction has 747 states and 1173 transitions. [2021-11-25 19:26:41,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 19:26:41,624 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1173 transitions. [2021-11-25 19:26:41,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-25 19:26:41,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:41,629 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:26:41,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:26:41,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:41,858 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:26:41,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:41,859 INFO L85 PathProgramCache]: Analyzing trace with hash 126027497, now seen corresponding path program 1 times [2021-11-25 19:26:41,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:41,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719117978] [2021-11-25 19:26:41,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:41,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:42,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:26:42,125 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:42,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719117978] [2021-11-25 19:26:42,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719117978] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:42,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872234590] [2021-11-25 19:26:42,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:42,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:42,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:42,133 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:42,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:26:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:42,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:26:42,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:42,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:42,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:26:42,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872234590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:42,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:26:42,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-25 19:26:42,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768623834] [2021-11-25 19:26:42,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:42,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:26:42,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:42,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:26:42,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:26:42,630 INFO L87 Difference]: Start difference. First operand 747 states and 1173 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-25 19:26:42,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:42,903 INFO L93 Difference]: Finished difference Result 1830 states and 2904 transitions. [2021-11-25 19:26:42,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:26:42,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 49 [2021-11-25 19:26:42,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:42,921 INFO L225 Difference]: With dead ends: 1830 [2021-11-25 19:26:42,922 INFO L226 Difference]: Without dead ends: 1095 [2021-11-25 19:26:42,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:26:42,932 INFO L933 BasicCegarLoop]: 691 mSDtfsCounter, 609 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:42,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 1206 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:26:42,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2021-11-25 19:26:43,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1071. [2021-11-25 19:26:43,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 722 states have (on average 1.5664819944598338) internal successors, (1131), 774 states have internal predecessors, (1131), 277 states have call successors, (277), 71 states have call predecessors, (277), 71 states have return successors, (284), 267 states have call predecessors, (284), 274 states have call successors, (284) [2021-11-25 19:26:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1692 transitions. [2021-11-25 19:26:43,034 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1692 transitions. Word has length 49 [2021-11-25 19:26:43,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:43,034 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 1692 transitions. [2021-11-25 19:26:43,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-25 19:26:43,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1692 transitions. [2021-11-25 19:26:43,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 19:26:43,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:43,038 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:26:43,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:26:43,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:43,253 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:26:43,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:43,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1420620201, now seen corresponding path program 1 times [2021-11-25 19:26:43,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:43,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170568457] [2021-11-25 19:26:43,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:43,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:26:43,465 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:43,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170568457] [2021-11-25 19:26:43,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170568457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:43,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:26:43,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:26:43,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074822676] [2021-11-25 19:26:43,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:43,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:26:43,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:43,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:26:43,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:26:43,469 INFO L87 Difference]: Start difference. First operand 1071 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 19:26:43,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:43,827 INFO L93 Difference]: Finished difference Result 3183 states and 5080 transitions. [2021-11-25 19:26:43,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:26:43,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 50 [2021-11-25 19:26:43,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:43,850 INFO L225 Difference]: With dead ends: 3183 [2021-11-25 19:26:43,850 INFO L226 Difference]: Without dead ends: 2124 [2021-11-25 19:26:43,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:26:43,864 INFO L933 BasicCegarLoop]: 750 mSDtfsCounter, 609 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:43,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 1341 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:26:43,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2021-11-25 19:26:44,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 2006. [2021-11-25 19:26:44,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2006 states, 1395 states have (on average 1.5842293906810037) internal successors, (2210), 1476 states have internal predecessors, (2210), 485 states have call successors, (485), 124 states have call predecessors, (485), 125 states have return successors, (520), 450 states have call predecessors, (520), 481 states have call successors, (520) [2021-11-25 19:26:44,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 3215 transitions. [2021-11-25 19:26:44,033 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 3215 transitions. Word has length 50 [2021-11-25 19:26:44,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:44,037 INFO L470 AbstractCegarLoop]: Abstraction has 2006 states and 3215 transitions. [2021-11-25 19:26:44,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-25 19:26:44,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 3215 transitions. [2021-11-25 19:26:44,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 19:26:44,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:44,055 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 19:26:44,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:26:44,056 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:26:44,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:44,062 INFO L85 PathProgramCache]: Analyzing trace with hash -403940645, now seen corresponding path program 1 times [2021-11-25 19:26:44,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:44,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964200017] [2021-11-25 19:26:44,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:44,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:26:44,280 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:44,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964200017] [2021-11-25 19:26:44,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964200017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:44,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:26:44,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:26:44,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034259130] [2021-11-25 19:26:44,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:44,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:26:44,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:44,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:26:44,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:26:44,286 INFO L87 Difference]: Start difference. First operand 2006 states and 3215 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 19:26:44,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:44,605 INFO L93 Difference]: Finished difference Result 4665 states and 7428 transitions. [2021-11-25 19:26:44,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:26:44,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 93 [2021-11-25 19:26:44,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:44,635 INFO L225 Difference]: With dead ends: 4665 [2021-11-25 19:26:44,635 INFO L226 Difference]: Without dead ends: 2671 [2021-11-25 19:26:44,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:26:44,651 INFO L933 BasicCegarLoop]: 671 mSDtfsCounter, 459 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:44,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 1715 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:26:44,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2671 states. [2021-11-25 19:26:44,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2671 to 2627. [2021-11-25 19:26:44,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 1809 states have (on average 1.529574350469873) internal successors, (2767), 1897 states have internal predecessors, (2767), 620 states have call successors, (620), 182 states have call predecessors, (620), 197 states have return successors, (748), 589 states have call predecessors, (748), 614 states have call successors, (748) [2021-11-25 19:26:44,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 4135 transitions. [2021-11-25 19:26:44,837 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 4135 transitions. Word has length 93 [2021-11-25 19:26:44,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:44,837 INFO L470 AbstractCegarLoop]: Abstraction has 2627 states and 4135 transitions. [2021-11-25 19:26:44,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 19:26:44,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 4135 transitions. [2021-11-25 19:26:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-25 19:26:44,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:44,844 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 19:26:44,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:26:44,845 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:26:44,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:44,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1003425394, now seen corresponding path program 1 times [2021-11-25 19:26:44,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:44,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665703616] [2021-11-25 19:26:44,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:44,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:45,049 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:26:45,049 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:45,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665703616] [2021-11-25 19:26:45,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665703616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:45,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:26:45,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:26:45,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376284907] [2021-11-25 19:26:45,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:45,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:26:45,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:45,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:26:45,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:26:45,053 INFO L87 Difference]: Start difference. First operand 2627 states and 4135 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 19:26:46,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:46,043 INFO L93 Difference]: Finished difference Result 6856 states and 11243 transitions. [2021-11-25 19:26:46,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:26:46,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 94 [2021-11-25 19:26:46,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:46,089 INFO L225 Difference]: With dead ends: 6856 [2021-11-25 19:26:46,089 INFO L226 Difference]: Without dead ends: 4241 [2021-11-25 19:26:46,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-25 19:26:46,115 INFO L933 BasicCegarLoop]: 770 mSDtfsCounter, 681 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:46,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 3444 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 19:26:46,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4241 states. [2021-11-25 19:26:46,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4241 to 3828. [2021-11-25 19:26:46,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3828 states, 2642 states have (on average 1.5208175624526874) internal successors, (4018), 2781 states have internal predecessors, (4018), 892 states have call successors, (892), 270 states have call predecessors, (892), 293 states have return successors, (1164), 842 states have call predecessors, (1164), 884 states have call successors, (1164) [2021-11-25 19:26:46,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3828 states to 3828 states and 6074 transitions. [2021-11-25 19:26:46,503 INFO L78 Accepts]: Start accepts. Automaton has 3828 states and 6074 transitions. Word has length 94 [2021-11-25 19:26:46,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:46,504 INFO L470 AbstractCegarLoop]: Abstraction has 3828 states and 6074 transitions. [2021-11-25 19:26:46,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-25 19:26:46,504 INFO L276 IsEmpty]: Start isEmpty. Operand 3828 states and 6074 transitions. [2021-11-25 19:26:46,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 19:26:46,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:46,512 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 19:26:46,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:26:46,513 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:26:46,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:46,513 INFO L85 PathProgramCache]: Analyzing trace with hash 221262206, now seen corresponding path program 1 times [2021-11-25 19:26:46,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:46,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040803584] [2021-11-25 19:26:46,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:46,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:26:46,638 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:46,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040803584] [2021-11-25 19:26:46,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040803584] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:46,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801612609] [2021-11-25 19:26:46,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:46,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:46,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:46,640 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:46,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:26:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:47,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 1823 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 19:26:47,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:26:47,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:26:47,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801612609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:47,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:26:47,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-11-25 19:26:47,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624007434] [2021-11-25 19:26:47,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:47,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:26:47,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:47,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:26:47,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:26:47,323 INFO L87 Difference]: Start difference. First operand 3828 states and 6074 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-25 19:26:48,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:48,400 INFO L93 Difference]: Finished difference Result 10037 states and 16369 transitions. [2021-11-25 19:26:48,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:26:48,401 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 95 [2021-11-25 19:26:48,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:48,533 INFO L225 Difference]: With dead ends: 10037 [2021-11-25 19:26:48,534 INFO L226 Difference]: Without dead ends: 6221 [2021-11-25 19:26:48,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:26:48,569 INFO L933 BasicCegarLoop]: 717 mSDtfsCounter, 536 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 3166 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:48,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 3166 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 19:26:48,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6221 states. [2021-11-25 19:26:48,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6221 to 5990. [2021-11-25 19:26:48,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5990 states, 4138 states have (on average 1.4804253262445626) internal successors, (6126), 4369 states have internal predecessors, (6126), 1384 states have call successors, (1384), 441 states have call predecessors, (1384), 467 states have return successors, (1827), 1285 states have call predecessors, (1827), 1373 states have call successors, (1827) [2021-11-25 19:26:49,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5990 states to 5990 states and 9337 transitions. [2021-11-25 19:26:49,016 INFO L78 Accepts]: Start accepts. Automaton has 5990 states and 9337 transitions. Word has length 95 [2021-11-25 19:26:49,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:49,075 INFO L470 AbstractCegarLoop]: Abstraction has 5990 states and 9337 transitions. [2021-11-25 19:26:49,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-25 19:26:49,076 INFO L276 IsEmpty]: Start isEmpty. Operand 5990 states and 9337 transitions. [2021-11-25 19:26:49,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-25 19:26:49,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:49,080 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 19:26:49,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:26:49,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 19:26:49,280 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:26:49,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:49,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1834462678, now seen corresponding path program 1 times [2021-11-25 19:26:49,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:49,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645214888] [2021-11-25 19:26:49,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:49,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:49,419 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:26:49,420 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:49,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645214888] [2021-11-25 19:26:49,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645214888] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:49,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492485567] [2021-11-25 19:26:49,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:49,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:49,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:49,422 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:49,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:26:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:49,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:26:49,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:49,985 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:26:49,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:26:49,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492485567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:49,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:26:49,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-25 19:26:49,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451745325] [2021-11-25 19:26:49,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:49,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:26:49,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:49,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:26:49,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:26:49,989 INFO L87 Difference]: Start difference. First operand 5990 states and 9337 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-25 19:26:50,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:50,587 INFO L93 Difference]: Finished difference Result 13324 states and 21095 transitions. [2021-11-25 19:26:50,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:26:50,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 94 [2021-11-25 19:26:50,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:50,673 INFO L225 Difference]: With dead ends: 13324 [2021-11-25 19:26:50,673 INFO L226 Difference]: Without dead ends: 7346 [2021-11-25 19:26:50,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:26:50,720 INFO L933 BasicCegarLoop]: 797 mSDtfsCounter, 570 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:50,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 1309 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:26:50,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7346 states. [2021-11-25 19:26:51,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7346 to 5883. [2021-11-25 19:26:51,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5883 states, 4066 states have (on average 1.4746679783571077) internal successors, (5996), 4295 states have internal predecessors, (5996), 1364 states have call successors, (1364), 432 states have call predecessors, (1364), 452 states have return successors, (1751), 1261 states have call predecessors, (1751), 1353 states have call successors, (1751) [2021-11-25 19:26:51,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5883 states to 5883 states and 9111 transitions. [2021-11-25 19:26:51,156 INFO L78 Accepts]: Start accepts. Automaton has 5883 states and 9111 transitions. Word has length 94 [2021-11-25 19:26:51,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:51,156 INFO L470 AbstractCegarLoop]: Abstraction has 5883 states and 9111 transitions. [2021-11-25 19:26:51,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-25 19:26:51,157 INFO L276 IsEmpty]: Start isEmpty. Operand 5883 states and 9111 transitions. [2021-11-25 19:26:51,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-25 19:26:51,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:51,161 INFO L514 BasicCegarLoop]: 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, 1, 1] [2021-11-25 19:26:51,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:26:51,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:51,389 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:26:51,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:51,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1659856391, now seen corresponding path program 1 times [2021-11-25 19:26:51,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:51,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186715844] [2021-11-25 19:26:51,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:51,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:26:51,620 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:51,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186715844] [2021-11-25 19:26:51,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186715844] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:51,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715679388] [2021-11-25 19:26:51,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:51,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:51,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:51,622 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:51,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:26:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:51,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-25 19:26:51,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:26:52,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:26:52,920 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 19:26:52,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715679388] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:26:52,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1954984280] [2021-11-25 19:26:52,944 INFO L159 IcfgInterpreter]: Started Sifa with 87 locations of interest [2021-11-25 19:26:52,944 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:26:52,950 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:26:52,956 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:26:52,956 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:26:58,947 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 582 for LOIs [2021-11-25 19:27:06,070 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 511 for LOIs [2021-11-25 19:27:06,388 INFO L197 IcfgInterpreter]: Interpreting procedure initTopDown with input of size 607 for LOIs [2021-11-25 19:27:08,334 INFO L197 IcfgInterpreter]: Interpreting procedure initFloors with input of size 581 for LOIs [2021-11-25 19:27:08,536 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 445 for LOIs [2021-11-25 19:27:08,611 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 445 for LOIs [2021-11-25 19:27:08,686 INFO L197 IcfgInterpreter]: Interpreting procedure bobCall with input of size 581 for LOIs [2021-11-25 19:27:12,552 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 585 for LOIs [2021-11-25 19:27:13,082 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 513 for LOIs [2021-11-25 19:27:13,221 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:27:39,247 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:27:45,065 WARN L227 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:28:32,085 WARN L227 SmtUtils]: Spent 8.37s on a formula simplification. DAG size of input: 511 DAG size of output: 450 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:28:41,768 WARN L227 SmtUtils]: Spent 8.69s on a formula simplification. DAG size of input: 547 DAG size of output: 458 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:29:03,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1954984280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:29:03,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:29:03,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [10, 8, 10] total 51 [2021-11-25 19:29:03,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019163048] [2021-11-25 19:29:03,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:29:03,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-25 19:29:03,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:29:03,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-25 19:29:03,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=2172, Unknown=0, NotChecked=0, Total=2550 [2021-11-25 19:29:03,098 INFO L87 Difference]: Start difference. First operand 5883 states and 9111 transitions. Second operand has 29 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 17 states have internal predecessors, (53), 11 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2021-11-25 19:29:32,066 WARN L227 SmtUtils]: Spent 8.66s on a formula simplification. DAG size of input: 607 DAG size of output: 588 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:29:41,303 WARN L227 SmtUtils]: Spent 8.94s on a formula simplification. DAG size of input: 613 DAG size of output: 594 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:30:12,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:30:12,984 INFO L93 Difference]: Finished difference Result 11899 states and 18432 transitions. [2021-11-25 19:30:12,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-25 19:30:12,985 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 17 states have internal predecessors, (53), 11 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 100 [2021-11-25 19:30:12,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:30:13,023 INFO L225 Difference]: With dead ends: 11899 [2021-11-25 19:30:13,023 INFO L226 Difference]: Without dead ends: 6028 [2021-11-25 19:30:13,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 251 SyntacticMatches, 9 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 146.1s TimeCoverageRelationStatistics Valid=460, Invalid=2732, Unknown=0, NotChecked=0, Total=3192 [2021-11-25 19:30:13,046 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 277 mSDsluCounter, 5023 mSDsCounter, 0 mSdLazyCounter, 8412 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 5625 SdHoareTripleChecker+Invalid, 8513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 8412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:30:13,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 5625 Invalid, 8513 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [101 Valid, 8412 Invalid, 0 Unknown, 0 Unchecked, 33.3s Time] [2021-11-25 19:30:13,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6028 states. [2021-11-25 19:30:13,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6028 to 5949. [2021-11-25 19:30:13,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5949 states, 4112 states have (on average 1.4708171206225682) internal successors, (6048), 4340 states have internal predecessors, (6048), 1377 states have call successors, (1377), 441 states have call predecessors, (1377), 459 states have return successors, (1765), 1273 states have call predecessors, (1765), 1366 states have call successors, (1765) [2021-11-25 19:30:13,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5949 states to 5949 states and 9190 transitions. [2021-11-25 19:30:13,450 INFO L78 Accepts]: Start accepts. Automaton has 5949 states and 9190 transitions. Word has length 100 [2021-11-25 19:30:13,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:30:13,451 INFO L470 AbstractCegarLoop]: Abstraction has 5949 states and 9190 transitions. [2021-11-25 19:30:13,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 17 states have internal predecessors, (53), 11 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2021-11-25 19:30:13,451 INFO L276 IsEmpty]: Start isEmpty. Operand 5949 states and 9190 transitions. [2021-11-25 19:30:13,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-25 19:30:13,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:30:13,455 INFO L514 BasicCegarLoop]: 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, 1] [2021-11-25 19:30:13,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:30:13,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:30:13,681 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:30:13,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:30:13,682 INFO L85 PathProgramCache]: Analyzing trace with hash 788771026, now seen corresponding path program 1 times [2021-11-25 19:30:13,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:30:13,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409184902] [2021-11-25 19:30:13,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:30:13,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:30:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:30:13,889 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:30:13,889 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:30:13,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409184902] [2021-11-25 19:30:13,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409184902] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:30:13,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364085648] [2021-11-25 19:30:13,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:30:13,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:30:13,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:30:13,897 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:30:13,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:30:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:30:14,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 1853 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-25 19:30:14,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:30:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:30:14,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:30:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:30:14,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364085648] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:30:14,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [351323194] [2021-11-25 19:30:14,956 INFO L159 IcfgInterpreter]: Started Sifa with 91 locations of interest [2021-11-25 19:30:14,956 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:30:14,957 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:30:14,958 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:30:14,958 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:30:19,580 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 582 for LOIs [2021-11-25 19:30:28,031 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 64 for LOIs [2021-11-25 19:30:28,045 INFO L197 IcfgInterpreter]: Interpreting procedure initTopDown with input of size 607 for LOIs [2021-11-25 19:30:30,143 INFO L197 IcfgInterpreter]: Interpreting procedure initFloors with input of size 581 for LOIs [2021-11-25 19:30:30,312 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 445 for LOIs [2021-11-25 19:30:30,387 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 445 for LOIs [2021-11-25 19:30:30,463 INFO L197 IcfgInterpreter]: Interpreting procedure bobCall with input of size 581 for LOIs [2021-11-25 19:30:33,667 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 585 for LOIs [2021-11-25 19:30:34,192 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 513 for LOIs [2021-11-25 19:30:34,331 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:31:00,095 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:31:05,862 WARN L227 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:32:15,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [351323194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:32:15,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:32:15,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [10, 8, 10] total 50 [2021-11-25 19:32:15,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369322888] [2021-11-25 19:32:15,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:32:15,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-25 19:32:15,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:32:15,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-25 19:32:15,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=2067, Unknown=0, NotChecked=0, Total=2450 [2021-11-25 19:32:15,538 INFO L87 Difference]: Start difference. First operand 5949 states and 9190 transitions. Second operand has 31 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 18 states have internal predecessors, (56), 12 states have call successors, (21), 8 states have call predecessors, (21), 9 states have return successors, (19), 11 states have call predecessors, (19), 11 states have call successors, (19) [2021-11-25 19:33:08,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:33:08,672 INFO L93 Difference]: Finished difference Result 11877 states and 18393 transitions. [2021-11-25 19:33:08,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-25 19:33:08,673 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 18 states have internal predecessors, (56), 12 states have call successors, (21), 8 states have call predecessors, (21), 9 states have return successors, (19), 11 states have call predecessors, (19), 11 states have call successors, (19) Word has length 106 [2021-11-25 19:33:08,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:33:08,708 INFO L225 Difference]: With dead ends: 11877 [2021-11-25 19:33:08,709 INFO L226 Difference]: Without dead ends: 6018 [2021-11-25 19:33:08,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 268 SyntacticMatches, 11 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 126.9s TimeCoverageRelationStatistics Valid=462, Invalid=2618, Unknown=0, NotChecked=0, Total=3080 [2021-11-25 19:33:08,735 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 276 mSDsluCounter, 4198 mSDsCounter, 0 mSdLazyCounter, 7981 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 4815 SdHoareTripleChecker+Invalid, 8082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 7981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:33:08,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 4815 Invalid, 8082 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [101 Valid, 7981 Invalid, 0 Unknown, 0 Unchecked, 27.2s Time] [2021-11-25 19:33:08,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6018 states. [2021-11-25 19:33:09,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6018 to 5951. [2021-11-25 19:33:09,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5951 states, 4113 states have (on average 1.4704595185995624) internal successors, (6048), 4341 states have internal predecessors, (6048), 1377 states have call successors, (1377), 442 states have call predecessors, (1377), 460 states have return successors, (1765), 1273 states have call predecessors, (1765), 1366 states have call successors, (1765) [2021-11-25 19:33:09,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5951 states to 5951 states and 9190 transitions. [2021-11-25 19:33:09,189 INFO L78 Accepts]: Start accepts. Automaton has 5951 states and 9190 transitions. Word has length 106 [2021-11-25 19:33:09,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:33:09,190 INFO L470 AbstractCegarLoop]: Abstraction has 5951 states and 9190 transitions. [2021-11-25 19:33:09,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 18 states have internal predecessors, (56), 12 states have call successors, (21), 8 states have call predecessors, (21), 9 states have return successors, (19), 11 states have call predecessors, (19), 11 states have call successors, (19) [2021-11-25 19:33:09,190 INFO L276 IsEmpty]: Start isEmpty. Operand 5951 states and 9190 transitions. [2021-11-25 19:33:09,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-25 19:33:09,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:33:09,197 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-25 19:33:09,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:33:09,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:33:09,425 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:33:09,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:33:09,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1868943789, now seen corresponding path program 1 times [2021-11-25 19:33:09,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:33:09,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875531381] [2021-11-25 19:33:09,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:33:09,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:33:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:33:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 19:33:09,595 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:33:09,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875531381] [2021-11-25 19:33:09,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875531381] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:33:09,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753079312] [2021-11-25 19:33:09,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:33:09,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:33:09,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:33:09,596 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:33:09,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 19:33:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:33:09,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-25 19:33:09,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:33:10,278 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-25 19:33:10,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:33:10,600 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-25 19:33:10,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753079312] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:33:10,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [903652571] [2021-11-25 19:33:10,605 INFO L159 IcfgInterpreter]: Started Sifa with 95 locations of interest [2021-11-25 19:33:10,605 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:33:10,606 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:33:10,606 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:33:10,606 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:33:14,065 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 582 for LOIs [2021-11-25 19:33:23,446 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 510 for LOIs [2021-11-25 19:33:23,620 INFO L197 IcfgInterpreter]: Interpreting procedure initTopDown with input of size 607 for LOIs [2021-11-25 19:33:25,455 INFO L197 IcfgInterpreter]: Interpreting procedure initFloors with input of size 581 for LOIs [2021-11-25 19:33:25,621 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 445 for LOIs [2021-11-25 19:33:25,696 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 445 for LOIs [2021-11-25 19:33:25,770 INFO L197 IcfgInterpreter]: Interpreting procedure bobCall with input of size 581 for LOIs [2021-11-25 19:33:28,841 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 585 for LOIs [2021-11-25 19:33:29,342 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 513 for LOIs [2021-11-25 19:33:29,480 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:33:54,408 WARN L227 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:34:00,063 WARN L227 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:35:25,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [903652571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:35:25,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:35:25,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [10, 8, 10] total 52 [2021-11-25 19:35:25,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337488510] [2021-11-25 19:35:25,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:35:25,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-25 19:35:25,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:35:25,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-25 19:35:25,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=2235, Unknown=0, NotChecked=0, Total=2652 [2021-11-25 19:35:25,240 INFO L87 Difference]: Start difference. First operand 5951 states and 9190 transitions. Second operand has 33 states, 25 states have (on average 2.36) internal successors, (59), 19 states have internal predecessors, (59), 13 states have call successors, (22), 8 states have call predecessors, (22), 9 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) [2021-11-25 19:35:50,739 WARN L227 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 609 DAG size of output: 589 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:35:57,309 WARN L227 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 615 DAG size of output: 595 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:36:21,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:21,442 INFO L93 Difference]: Finished difference Result 11878 states and 18382 transitions. [2021-11-25 19:36:21,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-25 19:36:21,443 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 25 states have (on average 2.36) internal successors, (59), 19 states have internal predecessors, (59), 13 states have call successors, (22), 8 states have call predecessors, (22), 9 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) Word has length 112 [2021-11-25 19:36:21,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:21,473 INFO L225 Difference]: With dead ends: 11878 [2021-11-25 19:36:21,473 INFO L226 Difference]: Without dead ends: 6019 [2021-11-25 19:36:21,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 282 SyntacticMatches, 13 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1109 ImplicationChecksByTransitivity, 146.2s TimeCoverageRelationStatistics Valid=496, Invalid=2810, Unknown=0, NotChecked=0, Total=3306 [2021-11-25 19:36:21,494 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 266 mSDsluCounter, 4187 mSDsCounter, 0 mSdLazyCounter, 7296 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 4690 SdHoareTripleChecker+Invalid, 7390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 7296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:21,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 4690 Invalid, 7390 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [94 Valid, 7296 Invalid, 0 Unknown, 0 Unchecked, 25.4s Time] [2021-11-25 19:36:21,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6019 states. [2021-11-25 19:36:21,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6019 to 5952. [2021-11-25 19:36:21,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5952 states, 4114 states have (on average 1.470102090422946) internal successors, (6048), 4342 states have internal predecessors, (6048), 1376 states have call successors, (1376), 443 states have call predecessors, (1376), 461 states have return successors, (1755), 1272 states have call predecessors, (1755), 1365 states have call successors, (1755) [2021-11-25 19:36:21,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 9179 transitions. [2021-11-25 19:36:21,866 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 9179 transitions. Word has length 112 [2021-11-25 19:36:21,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:21,867 INFO L470 AbstractCegarLoop]: Abstraction has 5952 states and 9179 transitions. [2021-11-25 19:36:21,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 25 states have (on average 2.36) internal successors, (59), 19 states have internal predecessors, (59), 13 states have call successors, (22), 8 states have call predecessors, (22), 9 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) [2021-11-25 19:36:21,868 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 9179 transitions. [2021-11-25 19:36:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-25 19:36:21,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:21,877 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:36:21,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:36:22,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:36:22,101 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:36:22,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:22,102 INFO L85 PathProgramCache]: Analyzing trace with hash -448023014, now seen corresponding path program 1 times [2021-11-25 19:36:22,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:22,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155548344] [2021-11-25 19:36:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:22,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:22,302 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-25 19:36:22,302 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:22,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155548344] [2021-11-25 19:36:22,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155548344] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:36:22,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792951447] [2021-11-25 19:36:22,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:22,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:36:22,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:36:22,304 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:36:22,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 19:36:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:22,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 2487 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-25 19:36:22,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:36:23,123 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-25 19:36:23,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:36:23,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792951447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:23,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:36:23,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-11-25 19:36:23,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719302899] [2021-11-25 19:36:23,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:23,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:36:23,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:23,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:36:23,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-11-25 19:36:23,125 INFO L87 Difference]: Start difference. First operand 5952 states and 9179 transitions. Second operand has 10 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 4 states have call successors, (29), 4 states have call predecessors, (29), 6 states have return successors, (28), 6 states have call predecessors, (28), 4 states have call successors, (28) [2021-11-25 19:36:26,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:26,670 INFO L93 Difference]: Finished difference Result 15129 states and 24041 transitions. [2021-11-25 19:36:26,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 19:36:26,671 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 4 states have call successors, (29), 4 states have call predecessors, (29), 6 states have return successors, (28), 6 states have call predecessors, (28), 4 states have call successors, (28) Word has length 182 [2021-11-25 19:36:26,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:26,721 INFO L225 Difference]: With dead ends: 15129 [2021-11-25 19:36:26,722 INFO L226 Difference]: Without dead ends: 9276 [2021-11-25 19:36:26,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2021-11-25 19:36:26,754 INFO L933 BasicCegarLoop]: 1057 mSDtfsCounter, 1617 mSDsluCounter, 2929 mSDsCounter, 0 mSdLazyCounter, 6005 mSolverCounterSat, 799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1636 SdHoareTripleChecker+Valid, 3775 SdHoareTripleChecker+Invalid, 6804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 799 IncrementalHoareTripleChecker+Valid, 6005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:26,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1636 Valid, 3775 Invalid, 6804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [799 Valid, 6005 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-25 19:36:26,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9276 states. [2021-11-25 19:36:27,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9276 to 8265. [2021-11-25 19:36:27,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8265 states, 5694 states have (on average 1.4539866526167895) internal successors, (8279), 5968 states have internal predecessors, (8279), 1892 states have call successors, (1892), 679 states have call predecessors, (1892), 678 states have return successors, (2500), 1757 states have call predecessors, (2500), 1873 states have call successors, (2500) [2021-11-25 19:36:27,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8265 states to 8265 states and 12671 transitions. [2021-11-25 19:36:27,380 INFO L78 Accepts]: Start accepts. Automaton has 8265 states and 12671 transitions. Word has length 182 [2021-11-25 19:36:27,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:27,380 INFO L470 AbstractCegarLoop]: Abstraction has 8265 states and 12671 transitions. [2021-11-25 19:36:27,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 4 states have call successors, (29), 4 states have call predecessors, (29), 6 states have return successors, (28), 6 states have call predecessors, (28), 4 states have call successors, (28) [2021-11-25 19:36:27,381 INFO L276 IsEmpty]: Start isEmpty. Operand 8265 states and 12671 transitions. [2021-11-25 19:36:27,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-25 19:36:27,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:27,393 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 3, 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, 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] [2021-11-25 19:36:27,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:36:27,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-25 19:36:27,621 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:36:27,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:27,622 INFO L85 PathProgramCache]: Analyzing trace with hash -283352452, now seen corresponding path program 1 times [2021-11-25 19:36:27,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:27,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834463708] [2021-11-25 19:36:27,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:27,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:27,783 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 18 proven. 19 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-25 19:36:27,783 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:27,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834463708] [2021-11-25 19:36:27,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834463708] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:36:27,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863230444] [2021-11-25 19:36:27,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:27,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:36:27,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:36:27,785 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:36:27,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 19:36:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:28,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:36:28,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:36:28,435 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-25 19:36:28,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:36:28,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863230444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:28,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:36:28,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2021-11-25 19:36:28,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772974021] [2021-11-25 19:36:28,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:28,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:36:28,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:28,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:36:28,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:36:28,438 INFO L87 Difference]: Start difference. First operand 8265 states and 12671 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 19:36:29,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:29,006 INFO L93 Difference]: Finished difference Result 14815 states and 23249 transitions. [2021-11-25 19:36:29,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:36:29,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 183 [2021-11-25 19:36:29,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:29,059 INFO L225 Difference]: With dead ends: 14815 [2021-11-25 19:36:29,059 INFO L226 Difference]: Without dead ends: 8596 [2021-11-25 19:36:29,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:36:29,090 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 33 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:29,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1210 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:36:29,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8596 states. [2021-11-25 19:36:29,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8596 to 8349. [2021-11-25 19:36:29,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8349 states, 5766 states have (on average 1.450398890045092) internal successors, (8363), 6040 states have internal predecessors, (8363), 1904 states have call successors, (1904), 679 states have call predecessors, (1904), 678 states have return successors, (2512), 1769 states have call predecessors, (2512), 1885 states have call successors, (2512) [2021-11-25 19:36:29,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8349 states to 8349 states and 12779 transitions. [2021-11-25 19:36:29,655 INFO L78 Accepts]: Start accepts. Automaton has 8349 states and 12779 transitions. Word has length 183 [2021-11-25 19:36:29,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:29,657 INFO L470 AbstractCegarLoop]: Abstraction has 8349 states and 12779 transitions. [2021-11-25 19:36:29,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 19:36:29,657 INFO L276 IsEmpty]: Start isEmpty. Operand 8349 states and 12779 transitions. [2021-11-25 19:36:29,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-25 19:36:29,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:29,671 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 3, 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, 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] [2021-11-25 19:36:29,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 19:36:29,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-25 19:36:29,897 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:36:29,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:29,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1513855729, now seen corresponding path program 1 times [2021-11-25 19:36:29,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:29,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009817597] [2021-11-25 19:36:29,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:29,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-25 19:36:30,057 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:30,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009817597] [2021-11-25 19:36:30,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009817597] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:36:30,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208070687] [2021-11-25 19:36:30,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:30,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:36:30,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:36:30,059 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:36:30,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a5aad0-3eb6-47b5-ad5b-d9fa8eb62aa5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 19:36:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:30,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-25 19:36:30,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:36:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-25 19:36:31,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:36:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-25 19:36:31,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208070687] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:36:31,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1092216584] [2021-11-25 19:36:31,667 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2021-11-25 19:36:31,668 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:36:31,668 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:36:31,669 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:36:31,669 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:36:37,804 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 683 for LOIs [2021-11-25 19:36:43,684 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__executivefloor with input of size 201 for LOIs [2021-11-25 19:36:47,173 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 92 for LOIs [2021-11-25 19:36:47,679 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 72 for LOIs [2021-11-25 19:36:47,815 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 74 for LOIs [2021-11-25 19:36:47,949 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 28 for LOIs [2021-11-25 19:36:47,951 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 57 for LOIs [2021-11-25 19:36:47,968 INFO L197 IcfgInterpreter]: Interpreting procedure initTopDown with input of size 607 for LOIs [2021-11-25 19:36:49,760 INFO L197 IcfgInterpreter]: Interpreting procedure initFloors with input of size 581 for LOIs [2021-11-25 19:36:49,930 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 27 for LOIs [2021-11-25 19:36:49,932 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 53 for LOIs [2021-11-25 19:36:50,018 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 47 for LOIs [2021-11-25 19:36:50,022 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 53 for LOIs [2021-11-25 19:36:50,034 INFO L197 IcfgInterpreter]: Interpreting procedure bobCall with input of size 581 for LOIs [2021-11-25 19:36:53,374 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 585 for LOIs [2021-11-25 19:36:53,890 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 513 for LOIs [2021-11-25 19:36:54,112 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:37:19,275 WARN L227 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:37:24,982 WARN L227 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:37:41,962 WARN L227 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 683 DAG size of output: 579 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)