./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh --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 680b86ee69d2fa1a591b34672ee94362515e8041606baf59201de5a19c705dd0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 13:25:28,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:25:28,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:25:28,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:25:28,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:25:28,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:25:28,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:25:28,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:25:28,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:25:28,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:25:28,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:25:28,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:25:28,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:25:28,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:25:28,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:25:28,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:25:28,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:25:28,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:25:28,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:25:28,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:25:28,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:25:28,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:25:28,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:25:28,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:25:28,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:25:28,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:25:28,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:25:28,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:25:28,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:25:28,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:25:28,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:25:28,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:25:28,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:25:28,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:25:28,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:25:28,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:25:28,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:25:28,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:25:28,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:25:28,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:25:28,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:25:28,742 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 13:25:28,764 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:25:28,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:25:28,764 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:25:28,765 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:25:28,765 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:25:28,765 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:25:28,766 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:25:28,766 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:25:28,766 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:25:28,766 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:25:28,771 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:25:28,772 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:25:28,772 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:25:28,772 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:25:28,772 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:25:28,772 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:25:28,773 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:25:28,773 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:25:28,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:25:28,773 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:25:28,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:25:28,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:25:28,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:25:28,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:25:28,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:25:28,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:25:28,774 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:25:28,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:25:28,774 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:25:28,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:25:28,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:25:28,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:25:28,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:25:28,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:25:28,775 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:25:28,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:25:28,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:25:28,776 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:25:28,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:25:28,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:25:28,776 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:25:28,776 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 680b86ee69d2fa1a591b34672ee94362515e8041606baf59201de5a19c705dd0 [2022-12-14 13:25:28,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:25:28,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:25:28,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:25:28,989 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:25:28,990 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:25:28,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c [2022-12-14 13:25:31,534 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:25:31,764 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:25:31,765 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c [2022-12-14 13:25:31,777 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/data/04f82f900/57d01ddb739f4d17ad985bb8ef5e0365/FLAGdf11939fc [2022-12-14 13:25:32,113 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/data/04f82f900/57d01ddb739f4d17ad985bb8ef5e0365 [2022-12-14 13:25:32,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:25:32,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:25:32,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:25:32,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:25:32,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:25:32,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:25:32" (1/1) ... [2022-12-14 13:25:32,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e66751c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:25:32, skipping insertion in model container [2022-12-14 13:25:32,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:25:32" (1/1) ... [2022-12-14 13:25:32,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:25:32,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:25:32,337 WARN L237 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_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c[13407,13420] [2022-12-14 13:25:32,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:25:32,473 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:25:32,507 WARN L237 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_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c[13407,13420] [2022-12-14 13:25:32,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:25:32,592 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:25:32,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:25:32 WrapperNode [2022-12-14 13:25:32,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:25:32,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:25:32,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:25:32,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:25:32,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:25:32" (1/1) ... [2022-12-14 13:25:32,616 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:25:32" (1/1) ... [2022-12-14 13:25:32,645 INFO L138 Inliner]: procedures = 91, calls = 335, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 835 [2022-12-14 13:25:32,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:25:32,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:25:32,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:25:32,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:25:32,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:25:32" (1/1) ... [2022-12-14 13:25:32,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:25:32" (1/1) ... [2022-12-14 13:25:32,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:25:32" (1/1) ... [2022-12-14 13:25:32,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:25:32" (1/1) ... [2022-12-14 13:25:32,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:25:32" (1/1) ... [2022-12-14 13:25:32,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:25:32" (1/1) ... [2022-12-14 13:25:32,688 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:25:32" (1/1) ... [2022-12-14 13:25:32,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:25:32" (1/1) ... [2022-12-14 13:25:32,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:25:32,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:25:32,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:25:32,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:25:32,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:25:32" (1/1) ... [2022-12-14 13:25:32,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:25:32,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:25:32,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:25:32,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:25:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-12-14 13:25:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-12-14 13:25:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:25:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-14 13:25:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-14 13:25:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-12-14 13:25:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-12-14 13:25:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-14 13:25:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-14 13:25:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-14 13:25:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-14 13:25:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-14 13:25:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-14 13:25:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-14 13:25:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-14 13:25:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-14 13:25:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-14 13:25:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-12-14 13:25:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-12-14 13:25:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-14 13:25:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-14 13:25:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-14 13:25:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-14 13:25:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-14 13:25:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-14 13:25:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-14 13:25:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-14 13:25:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-14 13:25:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-14 13:25:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-14 13:25:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-14 13:25:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-14 13:25:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-14 13:25:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-14 13:25:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-14 13:25:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-14 13:25:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-14 13:25:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:25:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-14 13:25:32,775 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-14 13:25:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-14 13:25:32,775 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-14 13:25:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-14 13:25:32,775 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-14 13:25:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:25:32,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:25:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-14 13:25:32,776 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-14 13:25:32,883 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:25:32,885 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:25:33,597 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:25:34,027 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:25:34,028 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 13:25:34,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:25:34 BoogieIcfgContainer [2022-12-14 13:25:34,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:25:34,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:25:34,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:25:34,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:25:34,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:25:32" (1/3) ... [2022-12-14 13:25:34,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f87332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:25:34, skipping insertion in model container [2022-12-14 13:25:34,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:25:32" (2/3) ... [2022-12-14 13:25:34,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f87332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:25:34, skipping insertion in model container [2022-12-14 13:25:34,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:25:34" (3/3) ... [2022-12-14 13:25:34,038 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product25.cil.c [2022-12-14 13:25:34,055 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:25:34,056 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:25:34,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:25:34,124 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3dfd2944, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:25:34,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:25:34,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 354 states, 239 states have (on average 1.6150627615062763) internal successors, (386), 260 states have internal predecessors, (386), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) [2022-12-14 13:25:34,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 13:25:34,141 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:25:34,141 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 13:25:34,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:25:34,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:25:34,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1376391486, now seen corresponding path program 1 times [2022-12-14 13:25:34,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:25:34,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236135274] [2022-12-14 13:25:34,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:25:34,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:25:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:25:34,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 13:25:34,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:25:34,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236135274] [2022-12-14 13:25:34,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236135274] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:25:34,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:25:34,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 13:25:34,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886123476] [2022-12-14 13:25:34,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:25:34,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 13:25:34,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:25:34,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 13:25:34,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 13:25:34,673 INFO L87 Difference]: Start difference. First operand has 354 states, 239 states have (on average 1.6150627615062763) internal successors, (386), 260 states have internal predecessors, (386), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-12-14 13:25:36,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:25:36,468 INFO L93 Difference]: Finished difference Result 1177 states and 1929 transitions. [2022-12-14 13:25:36,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 13:25:36,470 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 62 [2022-12-14 13:25:36,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:25:36,489 INFO L225 Difference]: With dead ends: 1177 [2022-12-14 13:25:36,489 INFO L226 Difference]: Without dead ends: 840 [2022-12-14 13:25:36,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-12-14 13:25:36,499 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 1636 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 3039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 13:25:36,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1699 Valid, 1676 Invalid, 3039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 13:25:36,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-12-14 13:25:36,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 791. [2022-12-14 13:25:36,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 558 states have (on average 1.636200716845878) internal successors, (913), 593 states have internal predecessors, (913), 188 states have call successors, (188), 42 states have call predecessors, (188), 44 states have return successors, (189), 180 states have call predecessors, (189), 183 states have call successors, (189) [2022-12-14 13:25:36,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1290 transitions. [2022-12-14 13:25:36,597 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1290 transitions. Word has length 62 [2022-12-14 13:25:36,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:25:36,598 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1290 transitions. [2022-12-14 13:25:36,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-12-14 13:25:36,598 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1290 transitions. [2022-12-14 13:25:36,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 13:25:36,601 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:25:36,602 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 13:25:36,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:25:36,602 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:25:36,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:25:36,603 INFO L85 PathProgramCache]: Analyzing trace with hash 272889612, now seen corresponding path program 1 times [2022-12-14 13:25:36,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:25:36,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921168770] [2022-12-14 13:25:36,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:25:36,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:25:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:25:36,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 13:25:36,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:25:36,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921168770] [2022-12-14 13:25:36,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921168770] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:25:36,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:25:36,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 13:25:36,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582395611] [2022-12-14 13:25:36,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:25:36,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 13:25:36,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:25:36,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 13:25:36,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:25:36,781 INFO L87 Difference]: Start difference. First operand 791 states and 1290 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 13:25:36,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:25:36,926 INFO L93 Difference]: Finished difference Result 1327 states and 2172 transitions. [2022-12-14 13:25:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:25:36,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2022-12-14 13:25:36,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:25:36,931 INFO L225 Difference]: With dead ends: 1327 [2022-12-14 13:25:36,931 INFO L226 Difference]: Without dead ends: 861 [2022-12-14 13:25:36,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:25:36,934 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 41 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:25:36,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 2193 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:25:36,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2022-12-14 13:25:36,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 803. [2022-12-14 13:25:36,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 567 states have (on average 1.6261022927689595) internal successors, (922), 602 states have internal predecessors, (922), 188 states have call successors, (188), 42 states have call predecessors, (188), 47 states have return successors, (195), 183 states have call predecessors, (195), 183 states have call successors, (195) [2022-12-14 13:25:36,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1305 transitions. [2022-12-14 13:25:36,986 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1305 transitions. Word has length 67 [2022-12-14 13:25:36,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:25:36,987 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1305 transitions. [2022-12-14 13:25:36,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 13:25:36,987 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1305 transitions. [2022-12-14 13:25:36,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 13:25:36,989 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:25:36,989 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 13:25:36,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:25:36,989 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:25:36,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:25:36,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1086753676, now seen corresponding path program 1 times [2022-12-14 13:25:36,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:25:36,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187261521] [2022-12-14 13:25:36,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:25:36,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:25:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:25:37,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 13:25:37,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:25:37,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187261521] [2022-12-14 13:25:37,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187261521] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:25:37,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:25:37,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 13:25:37,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312246060] [2022-12-14 13:25:37,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:25:37,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 13:25:37,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:25:37,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 13:25:37,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 13:25:37,218 INFO L87 Difference]: Start difference. First operand 803 states and 1305 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-12-14 13:25:38,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:25:38,740 INFO L93 Difference]: Finished difference Result 1822 states and 2958 transitions. [2022-12-14 13:25:38,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 13:25:38,740 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 71 [2022-12-14 13:25:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:25:38,748 INFO L225 Difference]: With dead ends: 1822 [2022-12-14 13:25:38,748 INFO L226 Difference]: Without dead ends: 1248 [2022-12-14 13:25:38,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 13:25:38,752 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 2213 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 924 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 3117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 924 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 13:25:38,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2360 Valid, 1336 Invalid, 3117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [924 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 13:25:38,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2022-12-14 13:25:38,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1154. [2022-12-14 13:25:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 803 states have (on average 1.5815691158156913) internal successors, (1270), 855 states have internal predecessors, (1270), 276 states have call successors, (276), 66 states have call predecessors, (276), 74 states have return successors, (292), 269 states have call predecessors, (292), 271 states have call successors, (292) [2022-12-14 13:25:38,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1838 transitions. [2022-12-14 13:25:38,835 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1838 transitions. Word has length 71 [2022-12-14 13:25:38,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:25:38,836 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 1838 transitions. [2022-12-14 13:25:38,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-12-14 13:25:38,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1838 transitions. [2022-12-14 13:25:38,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 13:25:38,838 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:25:38,838 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 13:25:38,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 13:25:38,838 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:25:38,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:25:38,839 INFO L85 PathProgramCache]: Analyzing trace with hash 448076056, now seen corresponding path program 1 times [2022-12-14 13:25:38,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:25:38,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393468347] [2022-12-14 13:25:38,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:25:38,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:25:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:25:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 13:25:39,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:25:39,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393468347] [2022-12-14 13:25:39,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393468347] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:25:39,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:25:39,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 13:25:39,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477746591] [2022-12-14 13:25:39,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:25:39,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 13:25:39,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:25:39,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 13:25:39,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:25:39,141 INFO L87 Difference]: Start difference. First operand 1154 states and 1838 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-14 13:25:39,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:25:39,322 INFO L93 Difference]: Finished difference Result 2223 states and 3599 transitions. [2022-12-14 13:25:39,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:25:39,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 74 [2022-12-14 13:25:39,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:25:39,328 INFO L225 Difference]: With dead ends: 2223 [2022-12-14 13:25:39,328 INFO L226 Difference]: Without dead ends: 1154 [2022-12-14 13:25:39,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:25:39,332 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 221 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:25:39,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1955 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:25:39,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-12-14 13:25:39,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1154. [2022-12-14 13:25:39,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 803 states have (on average 1.5417185554171855) internal successors, (1238), 855 states have internal predecessors, (1238), 276 states have call successors, (276), 66 states have call predecessors, (276), 74 states have return successors, (292), 269 states have call predecessors, (292), 271 states have call successors, (292) [2022-12-14 13:25:39,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1806 transitions. [2022-12-14 13:25:39,403 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1806 transitions. Word has length 74 [2022-12-14 13:25:39,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:25:39,403 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 1806 transitions. [2022-12-14 13:25:39,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-14 13:25:39,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1806 transitions. [2022-12-14 13:25:39,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 13:25:39,405 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:25:39,406 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 13:25:39,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 13:25:39,406 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:25:39,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:25:39,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1365768241, now seen corresponding path program 1 times [2022-12-14 13:25:39,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:25:39,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235562943] [2022-12-14 13:25:39,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:25:39,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:25:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:25:39,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 13:25:39,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:25:39,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235562943] [2022-12-14 13:25:39,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235562943] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:25:39,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:25:39,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 13:25:39,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468636130] [2022-12-14 13:25:39,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:25:39,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 13:25:39,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:25:39,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 13:25:39,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 13:25:39,647 INFO L87 Difference]: Start difference. First operand 1154 states and 1806 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 13:25:40,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:25:40,885 INFO L93 Difference]: Finished difference Result 2210 states and 3477 transitions. [2022-12-14 13:25:40,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 13:25:40,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 76 [2022-12-14 13:25:40,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:25:40,892 INFO L225 Difference]: With dead ends: 2210 [2022-12-14 13:25:40,892 INFO L226 Difference]: Without dead ends: 1342 [2022-12-14 13:25:40,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-14 13:25:40,895 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 923 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 2683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:25:40,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1514 Invalid, 2683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 13:25:40,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2022-12-14 13:25:40,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1181. [2022-12-14 13:25:40,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 821 states have (on average 1.5347137637028014) internal successors, (1260), 877 states have internal predecessors, (1260), 277 states have call successors, (277), 71 states have call predecessors, (277), 82 states have return successors, (303), 269 states have call predecessors, (303), 272 states have call successors, (303) [2022-12-14 13:25:40,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1840 transitions. [2022-12-14 13:25:40,952 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1840 transitions. Word has length 76 [2022-12-14 13:25:40,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:25:40,952 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1840 transitions. [2022-12-14 13:25:40,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-14 13:25:40,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1840 transitions. [2022-12-14 13:25:40,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 13:25:40,953 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:25:40,953 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 13:25:40,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 13:25:40,954 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:25:40,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:25:40,954 INFO L85 PathProgramCache]: Analyzing trace with hash -454087068, now seen corresponding path program 1 times [2022-12-14 13:25:40,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:25:40,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954008619] [2022-12-14 13:25:40,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:25:40,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:25:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:25:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 13:25:41,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:25:41,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954008619] [2022-12-14 13:25:41,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954008619] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:25:41,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:25:41,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 13:25:41,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937405181] [2022-12-14 13:25:41,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:25:41,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:25:41,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:25:41,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:25:41,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:25:41,124 INFO L87 Difference]: Start difference. First operand 1181 states and 1840 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 13:25:41,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:25:41,602 INFO L93 Difference]: Finished difference Result 1253 states and 1953 transitions. [2022-12-14 13:25:41,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:25:41,603 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 80 [2022-12-14 13:25:41,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:25:41,610 INFO L225 Difference]: With dead ends: 1253 [2022-12-14 13:25:41,611 INFO L226 Difference]: Without dead ends: 1238 [2022-12-14 13:25:41,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 13:25:41,613 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 640 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 13:25:41,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1688 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 13:25:41,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2022-12-14 13:25:41,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1185. [2022-12-14 13:25:41,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 825 states have (on average 1.5321212121212122) internal successors, (1264), 881 states have internal predecessors, (1264), 277 states have call successors, (277), 71 states have call predecessors, (277), 82 states have return successors, (303), 269 states have call predecessors, (303), 272 states have call successors, (303) [2022-12-14 13:25:41,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1844 transitions. [2022-12-14 13:25:41,680 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1844 transitions. Word has length 80 [2022-12-14 13:25:41,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:25:41,681 INFO L495 AbstractCegarLoop]: Abstraction has 1185 states and 1844 transitions. [2022-12-14 13:25:41,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 13:25:41,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1844 transitions. [2022-12-14 13:25:41,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-14 13:25:41,682 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:25:41,682 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 13:25:41,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 13:25:41,682 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:25:41,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:25:41,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1110409944, now seen corresponding path program 1 times [2022-12-14 13:25:41,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:25:41,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851087183] [2022-12-14 13:25:41,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:25:41,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:25:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:25:41,898 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 13:25:41,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:25:41,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851087183] [2022-12-14 13:25:41,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851087183] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:25:41,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:25:41,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 13:25:41,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376670036] [2022-12-14 13:25:41,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:25:41,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:25:41,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:25:41,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:25:41,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:25:41,900 INFO L87 Difference]: Start difference. First operand 1185 states and 1844 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-14 13:25:42,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:25:42,053 INFO L93 Difference]: Finished difference Result 1204 states and 1868 transitions. [2022-12-14 13:25:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 13:25:42,053 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), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) Word has length 85 [2022-12-14 13:25:42,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:25:42,060 INFO L225 Difference]: With dead ends: 1204 [2022-12-14 13:25:42,060 INFO L226 Difference]: Without dead ends: 1189 [2022-12-14 13:25:42,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 13:25:42,062 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 41 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:25:42,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 2524 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:25:42,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2022-12-14 13:25:42,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1185. [2022-12-14 13:25:42,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 825 states have (on average 1.5284848484848486) internal successors, (1261), 881 states have internal predecessors, (1261), 277 states have call successors, (277), 71 states have call predecessors, (277), 82 states have return successors, (303), 269 states have call predecessors, (303), 272 states have call successors, (303) [2022-12-14 13:25:42,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1841 transitions. [2022-12-14 13:25:42,138 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1841 transitions. Word has length 85 [2022-12-14 13:25:42,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:25:42,139 INFO L495 AbstractCegarLoop]: Abstraction has 1185 states and 1841 transitions. [2022-12-14 13:25:42,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2022-12-14 13:25:42,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1841 transitions. [2022-12-14 13:25:42,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-14 13:25:42,141 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:25:42,141 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-12-14 13:25:42,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 13:25:42,142 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:25:42,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:25:42,142 INFO L85 PathProgramCache]: Analyzing trace with hash -651543718, now seen corresponding path program 1 times [2022-12-14 13:25:42,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:25:42,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115850383] [2022-12-14 13:25:42,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:25:42,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:25:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:25:42,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 13:25:42,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:25:42,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115850383] [2022-12-14 13:25:42,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115850383] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:25:42,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016775575] [2022-12-14 13:25:42,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:25:42,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:25:42,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:25:42,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:25:42,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:25:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:25:42,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 1809 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-14 13:25:42,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:25:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 13:25:44,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:25:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 13:25:46,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016775575] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:25:46,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1061791674] [2022-12-14 13:25:46,816 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2022-12-14 13:25:46,816 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:25:46,819 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:25:46,823 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:25:46,823 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:25:51,014 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 584 for LOIs [2022-12-14 13:25:54,464 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 584 for LOIs [2022-12-14 13:25:56,507 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 88 for LOIs [2022-12-14 13:25:56,748 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 31 for LOIs [2022-12-14 13:25:56,755 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 591 for LOIs [2022-12-14 13:26:00,261 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 424 for LOIs [2022-12-14 13:26:00,328 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 84 for LOIs [2022-12-14 13:26:00,426 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 98 for LOIs [2022-12-14 13:26:00,445 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 554 for LOIs [2022-12-14 13:26:03,009 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 829 for LOIs [2022-12-14 13:28:38,899 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 656 for LOIs [2022-12-14 13:28:39,382 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:28:49,658 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 656 DAG size of output: 519 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:28:56,154 WARN L233 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 696 DAG size of output: 533 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:29:17,940 WARN L233 SmtUtils]: Spent 11.87s on a formula simplification. DAG size of input: 829 DAG size of output: 681 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:29:39,043 WARN L233 SmtUtils]: Spent 17.09s on a formula simplification. DAG size of input: 1157 DAG size of output: 684 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:30:30,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1061791674] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:30:30,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:30:30,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [11, 12, 12] total 84 [2022-12-14 13:30:30,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351536543] [2022-12-14 13:30:30,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:30:30,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-12-14 13:30:30,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:30:30,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-12-14 13:30:30,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=568, Invalid=6404, Unknown=0, NotChecked=0, Total=6972 [2022-12-14 13:30:30,668 INFO L87 Difference]: Start difference. First operand 1185 states and 1841 transitions. Second operand has 58 states, 47 states have (on average 1.148936170212766) internal successors, (54), 37 states have internal predecessors, (54), 16 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (16), 16 states have call predecessors, (16), 15 states have call successors, (16) [2022-12-14 13:30:37,334 WARN L233 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 640 DAG size of output: 594 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:32:15,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:32:15,819 INFO L93 Difference]: Finished difference Result 3010 states and 4710 transitions. [2022-12-14 13:32:15,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-12-14 13:32:15,820 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 47 states have (on average 1.148936170212766) internal successors, (54), 37 states have internal predecessors, (54), 16 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (16), 16 states have call predecessors, (16), 15 states have call successors, (16) Word has length 92 [2022-12-14 13:32:15,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:32:15,826 INFO L225 Difference]: With dead ends: 3010 [2022-12-14 13:32:15,826 INFO L226 Difference]: Without dead ends: 1848 [2022-12-14 13:32:15,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 202 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3229 ImplicationChecksByTransitivity, 153.1s TimeCoverageRelationStatistics Valid=710, Invalid=8410, Unknown=0, NotChecked=0, Total=9120 [2022-12-14 13:32:15,831 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 942 mSDsluCounter, 10083 mSDsCounter, 0 mSdLazyCounter, 21086 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 10846 SdHoareTripleChecker+Invalid, 21208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 21086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.9s IncrementalHoareTripleChecker+Time [2022-12-14 13:32:15,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 10846 Invalid, 21208 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [122 Valid, 21086 Invalid, 0 Unknown, 0 Unchecked, 62.9s Time] [2022-12-14 13:32:15,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2022-12-14 13:32:16,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1712. [2022-12-14 13:32:16,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1712 states, 1215 states have (on average 1.5209876543209877) internal successors, (1848), 1287 states have internal predecessors, (1848), 381 states have call successors, (381), 99 states have call predecessors, (381), 115 states have return successors, (416), 374 states have call predecessors, (416), 376 states have call successors, (416) [2022-12-14 13:32:16,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2645 transitions. [2022-12-14 13:32:16,366 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2645 transitions. Word has length 92 [2022-12-14 13:32:16,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:32:16,366 INFO L495 AbstractCegarLoop]: Abstraction has 1712 states and 2645 transitions. [2022-12-14 13:32:16,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 47 states have (on average 1.148936170212766) internal successors, (54), 37 states have internal predecessors, (54), 16 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (16), 16 states have call predecessors, (16), 15 states have call successors, (16) [2022-12-14 13:32:16,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2645 transitions. [2022-12-14 13:32:16,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 13:32:16,367 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:32:16,368 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-12-14 13:32:16,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:32:16,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:32:16,569 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:32:16,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:32:16,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1051447245, now seen corresponding path program 1 times [2022-12-14 13:32:16,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:32:16,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636843811] [2022-12-14 13:32:16,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:32:16,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:32:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:32:16,713 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 13:32:16,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:32:16,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636843811] [2022-12-14 13:32:16,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636843811] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:32:16,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:32:16,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:32:16,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159487621] [2022-12-14 13:32:16,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:32:16,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:32:16,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:32:16,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:32:16,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:32:16,715 INFO L87 Difference]: Start difference. First operand 1712 states and 2645 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-14 13:32:17,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:32:17,680 INFO L93 Difference]: Finished difference Result 4825 states and 7555 transitions. [2022-12-14 13:32:17,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:32:17,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 93 [2022-12-14 13:32:17,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:32:17,690 INFO L225 Difference]: With dead ends: 4825 [2022-12-14 13:32:17,690 INFO L226 Difference]: Without dead ends: 3260 [2022-12-14 13:32:17,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:32:17,694 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 499 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:32:17,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 1470 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:32:17,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2022-12-14 13:32:18,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 3257. [2022-12-14 13:32:18,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3257 states, 2313 states have (on average 1.5296152183311715) internal successors, (3538), 2451 states have internal predecessors, (3538), 726 states have call successors, (726), 185 states have call predecessors, (726), 217 states have return successors, (810), 718 states have call predecessors, (810), 721 states have call successors, (810) [2022-12-14 13:32:18,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3257 states to 3257 states and 5074 transitions. [2022-12-14 13:32:18,463 INFO L78 Accepts]: Start accepts. Automaton has 3257 states and 5074 transitions. Word has length 93 [2022-12-14 13:32:18,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:32:18,463 INFO L495 AbstractCegarLoop]: Abstraction has 3257 states and 5074 transitions. [2022-12-14 13:32:18,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-14 13:32:18,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3257 states and 5074 transitions. [2022-12-14 13:32:18,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 13:32:18,466 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:32:18,466 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-12-14 13:32:18,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 13:32:18,466 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:32:18,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:32:18,466 INFO L85 PathProgramCache]: Analyzing trace with hash -258900223, now seen corresponding path program 1 times [2022-12-14 13:32:18,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:32:18,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446781779] [2022-12-14 13:32:18,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:32:18,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:32:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:32:18,655 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 13:32:18,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:32:18,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446781779] [2022-12-14 13:32:18,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446781779] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:32:18,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:32:18,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 13:32:18,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490860171] [2022-12-14 13:32:18,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:32:18,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 13:32:18,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:32:18,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 13:32:18,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:32:18,658 INFO L87 Difference]: Start difference. First operand 3257 states and 5074 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 13:32:22,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:32:22,014 INFO L93 Difference]: Finished difference Result 10989 states and 17512 transitions. [2022-12-14 13:32:22,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 13:32:22,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 93 [2022-12-14 13:32:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:32:22,041 INFO L225 Difference]: With dead ends: 10989 [2022-12-14 13:32:22,041 INFO L226 Difference]: Without dead ends: 7891 [2022-12-14 13:32:22,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 13:32:22,049 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 1256 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 2160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:32:22,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 920 Invalid, 2160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 13:32:22,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7891 states. [2022-12-14 13:32:23,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7891 to 6982. [2022-12-14 13:32:23,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6982 states, 5099 states have (on average 1.5442243577171995) internal successors, (7874), 5383 states have internal predecessors, (7874), 1425 states have call successors, (1425), 385 states have call predecessors, (1425), 457 states have return successors, (1685), 1359 states have call predecessors, (1685), 1420 states have call successors, (1685) [2022-12-14 13:32:23,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6982 states to 6982 states and 10984 transitions. [2022-12-14 13:32:23,895 INFO L78 Accepts]: Start accepts. Automaton has 6982 states and 10984 transitions. Word has length 93 [2022-12-14 13:32:23,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:32:23,895 INFO L495 AbstractCegarLoop]: Abstraction has 6982 states and 10984 transitions. [2022-12-14 13:32:23,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-14 13:32:23,896 INFO L276 IsEmpty]: Start isEmpty. Operand 6982 states and 10984 transitions. [2022-12-14 13:32:23,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 13:32:23,897 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:32:23,898 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-12-14 13:32:23,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 13:32:23,898 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:32:23,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:32:23,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1255770445, now seen corresponding path program 1 times [2022-12-14 13:32:23,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:32:23,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538654200] [2022-12-14 13:32:23,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:32:23,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:32:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:32:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 13:32:24,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:32:24,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538654200] [2022-12-14 13:32:24,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538654200] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:32:24,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430609079] [2022-12-14 13:32:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:32:24,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:32:24,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:32:24,432 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:32:24,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 13:32:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:32:24,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-14 13:32:24,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:32:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 13:32:25,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:32:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 13:32:27,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430609079] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:32:27,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [632502439] [2022-12-14 13:32:27,541 INFO L159 IcfgInterpreter]: Started Sifa with 84 locations of interest [2022-12-14 13:32:27,541 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:32:27,541 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:32:27,541 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:32:27,541 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:32:31,795 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 584 for LOIs [2022-12-14 13:32:35,472 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 584 for LOIs [2022-12-14 13:32:37,591 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 88 for LOIs [2022-12-14 13:32:37,926 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 29 for LOIs [2022-12-14 13:32:37,934 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 591 for LOIs [2022-12-14 13:32:41,395 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 414 for LOIs [2022-12-14 13:32:41,455 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 84 for LOIs [2022-12-14 13:32:41,553 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 98 for LOIs [2022-12-14 13:32:41,571 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 554 for LOIs [2022-12-14 13:32:44,557 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 829 for LOIs [2022-12-14 13:33:37,426 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 656 for LOIs [2022-12-14 13:33:37,916 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:33:49,836 WARN L233 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 656 DAG size of output: 519 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:33:56,844 WARN L233 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 696 DAG size of output: 533 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:34:19,770 WARN L233 SmtUtils]: Spent 12.60s on a formula simplification. DAG size of input: 829 DAG size of output: 681 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:34:39,060 WARN L233 SmtUtils]: Spent 17.26s on a formula simplification. DAG size of input: 983 DAG size of output: 701 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:35:35,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [632502439] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:35:35,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:35:35,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [11, 12, 12] total 85 [2022-12-14 13:35:35,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752132477] [2022-12-14 13:35:35,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:35:35,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-12-14 13:35:35,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:35:35,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-12-14 13:35:35,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=583, Invalid=6557, Unknown=0, NotChecked=0, Total=7140 [2022-12-14 13:35:35,874 INFO L87 Difference]: Start difference. First operand 6982 states and 10984 transitions. Second operand has 59 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 38 states have internal predecessors, (55), 16 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (16), 16 states have call predecessors, (16), 15 states have call successors, (16) [2022-12-14 13:35:42,570 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 640 DAG size of output: 594 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:35:48,811 WARN L233 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 652 DAG size of output: 601 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:37:15,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:37:15,115 INFO L93 Difference]: Finished difference Result 12484 states and 19779 transitions. [2022-12-14 13:37:15,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-12-14 13:37:15,116 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 38 states have internal predecessors, (55), 16 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (16), 16 states have call predecessors, (16), 15 states have call successors, (16) Word has length 93 [2022-12-14 13:37:15,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:37:15,143 INFO L225 Difference]: With dead ends: 12484 [2022-12-14 13:37:15,143 INFO L226 Difference]: Without dead ends: 8606 [2022-12-14 13:37:15,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 204 SyntacticMatches, 4 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3304 ImplicationChecksByTransitivity, 158.3s TimeCoverageRelationStatistics Valid=725, Invalid=8587, Unknown=0, NotChecked=0, Total=9312 [2022-12-14 13:37:15,154 INFO L413 NwaCegarLoop]: 840 mSDtfsCounter, 913 mSDsluCounter, 9999 mSDsCounter, 0 mSdLazyCounter, 20080 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 10839 SdHoareTripleChecker+Invalid, 20207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 20080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:37:15,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 10839 Invalid, 20207 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [127 Valid, 20080 Invalid, 0 Unknown, 0 Unchecked, 56.3s Time] [2022-12-14 13:37:15,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8606 states. [2022-12-14 13:37:17,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8606 to 8446. [2022-12-14 13:37:17,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8446 states, 6174 states have (on average 1.522351797862002) internal successors, (9399), 6516 states have internal predecessors, (9399), 1709 states have call successors, (1709), 477 states have call predecessors, (1709), 562 states have return successors, (2014), 1634 states have call predecessors, (2014), 1704 states have call successors, (2014) [2022-12-14 13:37:17,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8446 states to 8446 states and 13122 transitions. [2022-12-14 13:37:17,696 INFO L78 Accepts]: Start accepts. Automaton has 8446 states and 13122 transitions. Word has length 93 [2022-12-14 13:37:17,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:37:17,696 INFO L495 AbstractCegarLoop]: Abstraction has 8446 states and 13122 transitions. [2022-12-14 13:37:17,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 38 states have internal predecessors, (55), 16 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (16), 16 states have call predecessors, (16), 15 states have call successors, (16) [2022-12-14 13:37:17,697 INFO L276 IsEmpty]: Start isEmpty. Operand 8446 states and 13122 transitions. [2022-12-14 13:37:17,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 13:37:17,698 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:37:17,698 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-12-14 13:37:17,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 13:37:17,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:37:17,899 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:37:17,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:37:17,900 INFO L85 PathProgramCache]: Analyzing trace with hash -297544103, now seen corresponding path program 1 times [2022-12-14 13:37:17,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:37:17,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887906298] [2022-12-14 13:37:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:37:17,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:37:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:37:18,335 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 13:37:18,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:37:18,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887906298] [2022-12-14 13:37:18,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887906298] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:37:18,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697382404] [2022-12-14 13:37:18,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:37:18,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:37:18,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:37:18,337 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:37:18,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cbc85ff-89b9-4de3-b1b7-7ab849349f0a/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 13:37:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:37:18,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-14 13:37:18,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:37:19,992 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 13:37:19,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:37:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 13:37:21,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697382404] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:37:21,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [777595634] [2022-12-14 13:37:21,404 INFO L159 IcfgInterpreter]: Started Sifa with 84 locations of interest [2022-12-14 13:37:21,404 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:37:21,405 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:37:21,405 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:37:21,405 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:37:25,416 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 584 for LOIs [2022-12-14 13:37:28,691 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 584 for LOIs [2022-12-14 13:37:30,688 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 88 for LOIs [2022-12-14 13:37:30,942 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 29 for LOIs [2022-12-14 13:37:30,949 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 591 for LOIs [2022-12-14 13:37:34,429 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 414 for LOIs [2022-12-14 13:37:34,490 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 84 for LOIs [2022-12-14 13:37:34,604 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 98 for LOIs [2022-12-14 13:37:34,623 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 554 for LOIs [2022-12-14 13:37:37,152 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 829 for LOIs