./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba --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 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 --- 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-b5237d8 [2022-11-22 02:19:46,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:19:46,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:19:46,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:19:46,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:19:46,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:19:46,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:19:46,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:19:46,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:19:46,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:19:46,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:19:46,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:19:46,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:19:46,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:19:46,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:19:46,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:19:46,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:19:46,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:19:46,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:19:46,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:19:46,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:19:46,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:19:46,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:19:46,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:19:46,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:19:46,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:19:46,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:19:46,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:19:46,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:19:46,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:19:46,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:19:46,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:19:46,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:19:46,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:19:46,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:19:46,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:19:46,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:19:46,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:19:46,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:19:46,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:19:46,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:19:46,744 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:19:46,795 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:19:46,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:19:46,796 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:19:46,796 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:19:46,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:19:46,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:19:46,798 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:19:46,798 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:19:46,798 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:19:46,798 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:19:46,800 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:19:46,800 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:19:46,800 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:19:46,800 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:19:46,801 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:19:46,801 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:19:46,801 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:19:46,801 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:19:46,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:19:46,802 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:19:46,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:19:46,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:19:46,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:19:46,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:19:46,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:19:46,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:19:46,804 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:19:46,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:19:46,805 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:19:46,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:19:46,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:19:46,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:19:46,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:19:46,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:19:46,807 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:19:46,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:19:46,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:19:46,807 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:19:46,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:19:46,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:19:46,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:19:46,808 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_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 [2022-11-22 02:19:47,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:19:47,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:19:47,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:19:47,182 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:19:47,183 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:19:47,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2022-11-22 02:19:50,135 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:19:50,446 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:19:50,447 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2022-11-22 02:19:50,483 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/data/76485cb71/369c85b0fdf44c5697a51d49643515a0/FLAGe9ac80b39 [2022-11-22 02:19:50,497 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/data/76485cb71/369c85b0fdf44c5697a51d49643515a0 [2022-11-22 02:19:50,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:19:50,501 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:19:50,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:19:50,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:19:50,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:19:50,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:19:50" (1/1) ... [2022-11-22 02:19:50,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@302dbbe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:50, skipping insertion in model container [2022-11-22 02:19:50,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:19:50" (1/1) ... [2022-11-22 02:19:50,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:19:50,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:19:51,150 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_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c[75121,75134] [2022-11-22 02:19:51,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:19:51,168 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:19:51,277 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_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c[75121,75134] [2022-11-22 02:19:51,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:19:51,304 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:19:51,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:51 WrapperNode [2022-11-22 02:19:51,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:19:51,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:19:51,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:19:51,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:19:51,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:51" (1/1) ... [2022-11-22 02:19:51,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:51" (1/1) ... [2022-11-22 02:19:51,423 INFO L138 Inliner]: procedures = 96, calls = 359, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 966 [2022-11-22 02:19:51,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:19:51,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:19:51,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:19:51,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:19:51,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:51" (1/1) ... [2022-11-22 02:19:51,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:51" (1/1) ... [2022-11-22 02:19:51,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:51" (1/1) ... [2022-11-22 02:19:51,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:51" (1/1) ... [2022-11-22 02:19:51,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:51" (1/1) ... [2022-11-22 02:19:51,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:51" (1/1) ... [2022-11-22 02:19:51,529 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:51" (1/1) ... [2022-11-22 02:19:51,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:51" (1/1) ... [2022-11-22 02:19:51,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:19:51,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:19:51,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:19:51,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:19:51,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:51" (1/1) ... [2022-11-22 02:19:51,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:19:51,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:19:51,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:19:51,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:19:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:19:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-22 02:19:51,658 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-22 02:19:51,659 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-11-22 02:19:51,659 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-11-22 02:19:51,659 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-22 02:19:51,659 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-22 02:19:51,659 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-22 02:19:51,659 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-22 02:19:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-22 02:19:51,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-22 02:19:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-22 02:19:51,660 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-22 02:19:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-11-22 02:19:51,660 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-11-22 02:19:51,661 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-22 02:19:51,661 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-22 02:19:51,661 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-22 02:19:51,661 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-22 02:19:51,661 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-22 02:19:51,662 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-22 02:19:51,662 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-22 02:19:51,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-22 02:19:51,663 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-22 02:19:51,663 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-22 02:19:51,664 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-22 02:19:51,664 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-22 02:19:51,664 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-22 02:19:51,665 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-22 02:19:51,665 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-22 02:19:51,666 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-22 02:19:51,666 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-11-22 02:19:51,667 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-11-22 02:19:51,667 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-22 02:19:51,667 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-22 02:19:51,667 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-11-22 02:19:51,667 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-11-22 02:19:51,668 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-22 02:19:51,668 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-22 02:19:51,668 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-22 02:19:51,668 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-22 02:19:51,668 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-22 02:19:51,669 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-22 02:19:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-22 02:19:51,669 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-22 02:19:51,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:19:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-22 02:19:51,670 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-22 02:19:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-22 02:19:51,671 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-22 02:19:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-22 02:19:51,672 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-22 02:19:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-22 02:19:51,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-22 02:19:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-11-22 02:19:51,673 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-11-22 02:19:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:19:51,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:19:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-22 02:19:51,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-22 02:19:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-11-22 02:19:51,674 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-11-22 02:19:51,918 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:19:51,920 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:19:53,320 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:19:54,179 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:19:54,180 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:19:54,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:19:54 BoogieIcfgContainer [2022-11-22 02:19:54,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:19:54,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:19:54,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:19:54,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:19:54,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:19:50" (1/3) ... [2022-11-22 02:19:54,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6642ae03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:19:54, skipping insertion in model container [2022-11-22 02:19:54,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:51" (2/3) ... [2022-11-22 02:19:54,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6642ae03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:19:54, skipping insertion in model container [2022-11-22 02:19:54,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:19:54" (3/3) ... [2022-11-22 02:19:54,202 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product24.cil.c [2022-11-22 02:19:54,222 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:19:54,222 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:19:54,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:19:54,309 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;@7b94eed6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:19:54,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:19:54,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 434 states, 288 states have (on average 1.5555555555555556) internal successors, (448), 308 states have internal predecessors, (448), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) [2022-11-22 02:19:54,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-22 02:19:54,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:54,337 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:54,338 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:19:54,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:54,346 INFO L85 PathProgramCache]: Analyzing trace with hash -951121915, now seen corresponding path program 1 times [2022-11-22 02:19:54,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:54,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316875086] [2022-11-22 02:19:54,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:54,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:19:55,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:55,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316875086] [2022-11-22 02:19:55,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316875086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:55,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:55,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:19:55,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876533950] [2022-11-22 02:19:55,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:55,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:19:55,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:55,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:19:55,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:19:55,530 INFO L87 Difference]: Start difference. First operand has 434 states, 288 states have (on average 1.5555555555555556) internal successors, (448), 308 states have internal predecessors, (448), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-22 02:19:56,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:56,813 INFO L93 Difference]: Finished difference Result 1240 states and 1966 transitions. [2022-11-22 02:19:56,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:19:56,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 49 [2022-11-22 02:19:56,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:56,847 INFO L225 Difference]: With dead ends: 1240 [2022-11-22 02:19:56,848 INFO L226 Difference]: Without dead ends: 808 [2022-11-22 02:19:56,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:19:56,865 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 577 mSDsluCounter, 2525 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 3252 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:56,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 3252 Invalid, 762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 02:19:56,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-11-22 02:19:57,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 800. [2022-11-22 02:19:57,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 533 states have (on average 1.4859287054409005) internal successors, (792), 567 states have internal predecessors, (792), 214 states have call successors, (214), 55 states have call predecessors, (214), 52 states have return successors, (217), 204 states have call predecessors, (217), 210 states have call successors, (217) [2022-11-22 02:19:57,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1223 transitions. [2022-11-22 02:19:57,065 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1223 transitions. Word has length 49 [2022-11-22 02:19:57,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:57,066 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 1223 transitions. [2022-11-22 02:19:57,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-22 02:19:57,066 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1223 transitions. [2022-11-22 02:19:57,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-22 02:19:57,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:57,069 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:57,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:19:57,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:19:57,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:57,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1102540507, now seen corresponding path program 1 times [2022-11-22 02:19:57,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:57,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412310004] [2022-11-22 02:19:57,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:57,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:19:57,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:57,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412310004] [2022-11-22 02:19:57,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412310004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:57,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:57,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:19:57,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038834956] [2022-11-22 02:19:57,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:57,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:19:57,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:57,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:19:57,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:19:57,455 INFO L87 Difference]: Start difference. First operand 800 states and 1223 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-22 02:19:57,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:57,812 INFO L93 Difference]: Finished difference Result 2370 states and 3657 transitions. [2022-11-22 02:19:57,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:19:57,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 50 [2022-11-22 02:19:57,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:57,829 INFO L225 Difference]: With dead ends: 2370 [2022-11-22 02:19:57,829 INFO L226 Difference]: Without dead ends: 1583 [2022-11-22 02:19:57,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:19:57,840 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 633 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:57,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1384 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:19:57,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2022-11-22 02:19:57,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1511. [2022-11-22 02:19:57,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1035 states have (on average 1.4985507246376812) internal successors, (1551), 1087 states have internal predecessors, (1551), 381 states have call successors, (381), 99 states have call predecessors, (381), 94 states have return successors, (401), 352 states have call predecessors, (401), 375 states have call successors, (401) [2022-11-22 02:19:57,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 2333 transitions. [2022-11-22 02:19:57,965 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 2333 transitions. Word has length 50 [2022-11-22 02:19:57,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:57,966 INFO L495 AbstractCegarLoop]: Abstraction has 1511 states and 2333 transitions. [2022-11-22 02:19:57,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-22 02:19:57,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 2333 transitions. [2022-11-22 02:19:57,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-22 02:19:57,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:57,980 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:57,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:19:57,980 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:19:57,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:57,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1387708293, now seen corresponding path program 1 times [2022-11-22 02:19:57,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:57,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011918891] [2022-11-22 02:19:57,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:57,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:58,520 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 02:19:58,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:58,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011918891] [2022-11-22 02:19:58,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011918891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:58,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:58,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:19:58,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180515930] [2022-11-22 02:19:58,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:58,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:19:58,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:58,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:19:58,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:19:58,523 INFO L87 Difference]: Start difference. First operand 1511 states and 2333 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-22 02:19:59,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:59,650 INFO L93 Difference]: Finished difference Result 3931 states and 6280 transitions. [2022-11-22 02:19:59,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:19:59,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 94 [2022-11-22 02:19:59,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:59,673 INFO L225 Difference]: With dead ends: 3931 [2022-11-22 02:19:59,674 INFO L226 Difference]: Without dead ends: 2432 [2022-11-22 02:19:59,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:19:59,687 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 711 mSDsluCounter, 2791 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:59,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 3599 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:19:59,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2022-11-22 02:19:59,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2218. [2022-11-22 02:19:59,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 1523 states have (on average 1.4917925147734734) internal successors, (2272), 1607 states have internal predecessors, (2272), 554 states have call successors, (554), 147 states have call predecessors, (554), 140 states have return successors, (623), 506 states have call predecessors, (623), 546 states have call successors, (623) [2022-11-22 02:19:59,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3449 transitions. [2022-11-22 02:19:59,849 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3449 transitions. Word has length 94 [2022-11-22 02:19:59,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:59,849 INFO L495 AbstractCegarLoop]: Abstraction has 2218 states and 3449 transitions. [2022-11-22 02:19:59,850 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), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-22 02:19:59,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3449 transitions. [2022-11-22 02:19:59,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-22 02:19:59,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:59,853 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:59,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:19:59,853 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:19:59,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:59,854 INFO L85 PathProgramCache]: Analyzing trace with hash -2107044805, now seen corresponding path program 1 times [2022-11-22 02:19:59,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:59,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479338444] [2022-11-22 02:19:59,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:59,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:20:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-22 02:20:00,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:20:00,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479338444] [2022-11-22 02:20:00,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479338444] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:20:00,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543681554] [2022-11-22 02:20:00,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:20:00,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:20:00,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:20:00,165 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:20:00,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:20:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:20:00,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 1810 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:20:00,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:20:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:20:00,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:20:00,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543681554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:20:00,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:20:00,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-22 02:20:00,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260670987] [2022-11-22 02:20:00,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:20:00,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:20:00,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:20:00,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:20:00,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:20:00,797 INFO L87 Difference]: Start difference. First operand 2218 states and 3449 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 02:20:01,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:20:01,287 INFO L93 Difference]: Finished difference Result 6364 states and 10153 transitions. [2022-11-22 02:20:01,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:20:01,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 92 [2022-11-22 02:20:01,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:20:01,328 INFO L225 Difference]: With dead ends: 6364 [2022-11-22 02:20:01,328 INFO L226 Difference]: Without dead ends: 4158 [2022-11-22 02:20:01,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:20:01,345 INFO L413 NwaCegarLoop]: 1128 mSDtfsCounter, 596 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:20:01,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 1666 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:20:01,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2022-11-22 02:20:01,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 4040. [2022-11-22 02:20:01,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4040 states, 2789 states have (on average 1.5030476873431338) internal successors, (4192), 2959 states have internal predecessors, (4192), 987 states have call successors, (987), 264 states have call predecessors, (987), 263 states have return successors, (1156), 902 states have call predecessors, (1156), 979 states have call successors, (1156) [2022-11-22 02:20:01,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 6335 transitions. [2022-11-22 02:20:01,710 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 6335 transitions. Word has length 92 [2022-11-22 02:20:01,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:20:01,711 INFO L495 AbstractCegarLoop]: Abstraction has 4040 states and 6335 transitions. [2022-11-22 02:20:01,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 02:20:01,711 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 6335 transitions. [2022-11-22 02:20:01,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-22 02:20:01,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:20:01,715 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:20:01,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:20:01,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:20:01,931 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:20:01,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:20:01,932 INFO L85 PathProgramCache]: Analyzing trace with hash -417977892, now seen corresponding path program 1 times [2022-11-22 02:20:01,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:20:01,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835681594] [2022-11-22 02:20:01,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:20:01,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:20:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:20:02,276 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-22 02:20:02,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:20:02,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835681594] [2022-11-22 02:20:02,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835681594] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:20:02,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444585602] [2022-11-22 02:20:02,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:20:02,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:20:02,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:20:02,279 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:20:02,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:20:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:20:02,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:20:02,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:20:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:20:02,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:20:02,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444585602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:20:02,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:20:02,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-22 02:20:02,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829480293] [2022-11-22 02:20:02,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:20:02,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:20:02,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:20:02,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:20:02,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:20:02,843 INFO L87 Difference]: Start difference. First operand 4040 states and 6335 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 02:20:03,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:20:03,512 INFO L93 Difference]: Finished difference Result 9064 states and 14368 transitions. [2022-11-22 02:20:03,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:20:03,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 94 [2022-11-22 02:20:03,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:20:03,563 INFO L225 Difference]: With dead ends: 9064 [2022-11-22 02:20:03,564 INFO L226 Difference]: Without dead ends: 5036 [2022-11-22 02:20:03,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:20:03,599 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 594 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:20:03,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 1367 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:20:03,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2022-11-22 02:20:03,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 4972. [2022-11-22 02:20:03,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4972 states, 3443 states have (on average 1.5117629973860005) internal successors, (5205), 3656 states have internal predecessors, (5205), 1205 states have call successors, (1205), 321 states have call predecessors, (1205), 323 states have return successors, (1411), 1103 states have call predecessors, (1411), 1197 states have call successors, (1411) [2022-11-22 02:20:03,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4972 states to 4972 states and 7821 transitions. [2022-11-22 02:20:04,000 INFO L78 Accepts]: Start accepts. Automaton has 4972 states and 7821 transitions. Word has length 94 [2022-11-22 02:20:04,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:20:04,001 INFO L495 AbstractCegarLoop]: Abstraction has 4972 states and 7821 transitions. [2022-11-22 02:20:04,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 02:20:04,001 INFO L276 IsEmpty]: Start isEmpty. Operand 4972 states and 7821 transitions. [2022-11-22 02:20:04,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-22 02:20:04,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:20:04,006 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:20:04,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:20:04,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:20:04,215 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:20:04,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:20:04,216 INFO L85 PathProgramCache]: Analyzing trace with hash -11691783, now seen corresponding path program 1 times [2022-11-22 02:20:04,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:20:04,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917832677] [2022-11-22 02:20:04,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:20:04,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:20:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:20:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 02:20:05,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:20:05,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917832677] [2022-11-22 02:20:05,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917832677] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:20:05,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882001360] [2022-11-22 02:20:05,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:20:05,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:20:05,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:20:05,010 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:20:05,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:20:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:20:05,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 02:20:05,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:20:05,599 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-22 02:20:05,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:20:05,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882001360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:20:05,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:20:05,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2022-11-22 02:20:05,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963462606] [2022-11-22 02:20:05,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:20:05,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:20:05,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:20:05,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:20:05,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:20:05,602 INFO L87 Difference]: Start difference. First operand 4972 states and 7821 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 02:20:06,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:20:06,225 INFO L93 Difference]: Finished difference Result 10962 states and 17214 transitions. [2022-11-22 02:20:06,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:20:06,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 99 [2022-11-22 02:20:06,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:20:06,266 INFO L225 Difference]: With dead ends: 10962 [2022-11-22 02:20:06,266 INFO L226 Difference]: Without dead ends: 6002 [2022-11-22 02:20:06,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-22 02:20:06,295 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 441 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:20:06,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 1868 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:20:06,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2022-11-22 02:20:06,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 5958. [2022-11-22 02:20:06,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5958 states, 4096 states have (on average 1.472900390625) internal successors, (6033), 4313 states have internal predecessors, (6033), 1412 states have call successors, (1412), 426 states have call predecessors, (1412), 449 states have return successors, (1751), 1324 states have call predecessors, (1751), 1401 states have call successors, (1751) [2022-11-22 02:20:06,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5958 states to 5958 states and 9196 transitions. [2022-11-22 02:20:06,872 INFO L78 Accepts]: Start accepts. Automaton has 5958 states and 9196 transitions. Word has length 99 [2022-11-22 02:20:06,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:20:06,872 INFO L495 AbstractCegarLoop]: Abstraction has 5958 states and 9196 transitions. [2022-11-22 02:20:06,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-22 02:20:06,874 INFO L276 IsEmpty]: Start isEmpty. Operand 5958 states and 9196 transitions. [2022-11-22 02:20:06,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-22 02:20:06,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:20:06,878 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:20:06,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:20:07,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:20:07,087 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:20:07,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:20:07,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1132720807, now seen corresponding path program 1 times [2022-11-22 02:20:07,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:20:07,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014179008] [2022-11-22 02:20:07,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:20:07,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:20:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:20:08,036 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 02:20:08,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:20:08,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014179008] [2022-11-22 02:20:08,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014179008] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:20:08,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469289731] [2022-11-22 02:20:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:20:08,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:20:08,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:20:08,039 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:20:08,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:20:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:20:08,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-22 02:20:08,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:20:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 02:20:08,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:20:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 02:20:09,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469289731] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:20:09,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [434598717] [2022-11-22 02:20:09,370 INFO L159 IcfgInterpreter]: Started Sifa with 87 locations of interest [2022-11-22 02:20:09,370 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:20:09,374 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:20:09,379 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:20:09,380 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:20:15,998 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 582 for LOIs [2022-11-22 02:20:24,282 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 511 for LOIs [2022-11-22 02:20:24,679 INFO L197 IcfgInterpreter]: Interpreting procedure initTopDown with input of size 607 for LOIs [2022-11-22 02:20:27,145 INFO L197 IcfgInterpreter]: Interpreting procedure initFloors with input of size 581 for LOIs [2022-11-22 02:20:27,389 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 445 for LOIs [2022-11-22 02:20:27,465 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 445 for LOIs [2022-11-22 02:20:27,561 INFO L197 IcfgInterpreter]: Interpreting procedure bobCall with input of size 581 for LOIs [2022-11-22 02:20:32,077 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 585 for LOIs [2022-11-22 02:20:32,716 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 513 for LOIs [2022-11-22 02:20:32,860 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:21:08,334 WARN L233 SmtUtils]: Spent 7.40s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:21:16,115 WARN L233 SmtUtils]: Spent 7.41s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:21:25,381 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 780 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:21:45,111 WARN L233 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 622 DAG size of output: 595 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:21:51,549 WARN L233 SmtUtils]: Spent 5.99s on a formula simplification. DAG size of input: 624 DAG size of output: 597 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:22:00,124 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 630 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:22:06,710 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 630 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:22:17,181 WARN L233 SmtUtils]: Spent 9.96s on a formula simplification. DAG size of input: 511 DAG size of output: 450 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:22:28,015 WARN L233 SmtUtils]: Spent 10.27s on a formula simplification. DAG size of input: 547 DAG size of output: 458 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:22:34,749 WARN L233 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 634 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:22:41,527 WARN L233 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 634 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:22:49,486 WARN L233 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 637 DAG size of output: 603 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:22:56,256 WARN L233 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 635 DAG size of output: 603 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:22:56,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [434598717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:22:56,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:22:56,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [10, 8, 10] total 51 [2022-11-22 02:22:56,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641246373] [2022-11-22 02:22:56,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:22:56,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-22 02:22:56,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:22:56,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-22 02:22:56,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=2172, Unknown=0, NotChecked=0, Total=2550 [2022-11-22 02:22:56,269 INFO L87 Difference]: Start difference. First operand 5958 states and 9196 transitions. Second operand has 29 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 17 states have internal predecessors, (53), 11 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-22 02:23:03,837 WARN L233 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 618 DAG size of output: 583 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:23:10,545 WARN L233 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 624 DAG size of output: 589 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:23:17,076 WARN L233 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 605 DAG size of output: 586 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:23:22,968 WARN L233 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 605 DAG size of output: 586 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:23:34,469 WARN L233 SmtUtils]: Spent 10.68s on a formula simplification. DAG size of input: 607 DAG size of output: 588 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:23:45,685 WARN L233 SmtUtils]: Spent 10.86s on a formula simplification. DAG size of input: 613 DAG size of output: 594 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:24:45,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:24:45,264 INFO L93 Difference]: Finished difference Result 12055 states and 18610 transitions. [2022-11-22 02:24:45,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-22 02:24:45,265 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 17 states have internal predecessors, (53), 11 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 100 [2022-11-22 02:24:45,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:24:45,303 INFO L225 Difference]: With dead ends: 12055 [2022-11-22 02:24:45,304 INFO L226 Difference]: Without dead ends: 6109 [2022-11-22 02:24:45,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 253 SyntacticMatches, 7 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 189.8s TimeCoverageRelationStatistics Valid=460, Invalid=2732, Unknown=0, NotChecked=0, Total=3192 [2022-11-22 02:24:45,328 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 171 mSDsluCounter, 5525 mSDsCounter, 0 mSdLazyCounter, 9909 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 6147 SdHoareTripleChecker+Invalid, 9957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 9909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:24:45,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 6147 Invalid, 9957 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [48 Valid, 9909 Invalid, 0 Unknown, 0 Unchecked, 61.9s Time] [2022-11-22 02:24:45,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6109 states. [2022-11-22 02:24:45,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6109 to 6030. [2022-11-22 02:24:45,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6030 states, 4146 states have (on average 1.4688856729377713) internal successors, (6090), 4362 states have internal predecessors, (6090), 1427 states have call successors, (1427), 435 states have call predecessors, (1427), 456 states have return successors, (1767), 1338 states have call predecessors, (1767), 1416 states have call successors, (1767) [2022-11-22 02:24:45,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6030 states to 6030 states and 9284 transitions. [2022-11-22 02:24:45,953 INFO L78 Accepts]: Start accepts. Automaton has 6030 states and 9284 transitions. Word has length 100 [2022-11-22 02:24:45,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:24:45,954 INFO L495 AbstractCegarLoop]: Abstraction has 6030 states and 9284 transitions. [2022-11-22 02:24:45,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 17 states have internal predecessors, (53), 11 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-22 02:24:45,954 INFO L276 IsEmpty]: Start isEmpty. Operand 6030 states and 9284 transitions. [2022-11-22 02:24:45,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-22 02:24:45,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:24:45,958 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:24:45,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:24:46,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-22 02:24:46,168 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:24:46,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:24:46,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1741949641, now seen corresponding path program 1 times [2022-11-22 02:24:46,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:24:46,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857665422] [2022-11-22 02:24:46,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:46,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:24:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:46,566 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:24:46,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:24:46,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857665422] [2022-11-22 02:24:46,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857665422] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:24:46,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22185782] [2022-11-22 02:24:46,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:46,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:24:46,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:24:46,568 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:24:46,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:24:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:46,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 1853 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-22 02:24:46,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:24:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-22 02:24:47,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:24:47,693 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:24:47,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22185782] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:24:47,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1712434947] [2022-11-22 02:24:47,698 INFO L159 IcfgInterpreter]: Started Sifa with 91 locations of interest [2022-11-22 02:24:47,698 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:24:47,699 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:24:47,699 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:24:47,699 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:24:52,322 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 582 for LOIs [2022-11-22 02:25:03,083 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 64 for LOIs [2022-11-22 02:25:03,095 INFO L197 IcfgInterpreter]: Interpreting procedure initTopDown with input of size 607 for LOIs [2022-11-22 02:25:05,528 INFO L197 IcfgInterpreter]: Interpreting procedure initFloors with input of size 581 for LOIs [2022-11-22 02:25:05,722 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 445 for LOIs [2022-11-22 02:25:05,796 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 445 for LOIs [2022-11-22 02:25:05,871 INFO L197 IcfgInterpreter]: Interpreting procedure bobCall with input of size 581 for LOIs [2022-11-22 02:25:09,860 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 585 for LOIs [2022-11-22 02:25:10,783 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 513 for LOIs [2022-11-22 02:25:11,022 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:25:45,913 WARN L233 SmtUtils]: Spent 7.50s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:25:53,637 WARN L233 SmtUtils]: Spent 7.41s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:26:02,821 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 780 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:26:22,614 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 622 DAG size of output: 595 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:26:29,009 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 622 DAG size of output: 597 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:26:37,631 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 630 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:26:44,139 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 628 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:26:52,414 WARN L233 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 634 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:26:59,110 WARN L233 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 634 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:27:06,904 WARN L233 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 637 DAG size of output: 603 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:27:13,744 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 637 DAG size of output: 603 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:27:21,854 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 640 DAG size of output: 604 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:27:28,735 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 640 DAG size of output: 604 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:27:28,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1712434947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:28,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:27:28,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [10, 8, 10] total 50 [2022-11-22 02:27:28,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615672798] [2022-11-22 02:27:28,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:28,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-22 02:27:28,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:28,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-22 02:27:28,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=2067, Unknown=0, NotChecked=0, Total=2450 [2022-11-22 02:27:28,755 INFO L87 Difference]: Start difference. First operand 6030 states and 9284 transitions. Second operand has 31 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 18 states have internal predecessors, (56), 12 states have call successors, (21), 8 states have call predecessors, (21), 9 states have return successors, (19), 11 states have call predecessors, (19), 11 states have call successors, (19) [2022-11-22 02:27:36,052 WARN L233 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 618 DAG size of output: 583 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:27:42,687 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 624 DAG size of output: 589 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:27:49,110 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 605 DAG size of output: 586 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:27:54,943 WARN L233 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 605 DAG size of output: 586 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:28:00,891 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 605 DAG size of output: 585 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:28:06,576 WARN L233 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 611 DAG size of output: 591 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:28:54,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:54,970 INFO L93 Difference]: Finished difference Result 12033 states and 18572 transitions. [2022-11-22 02:28:54,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-22 02:28:54,972 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 18 states have internal predecessors, (56), 12 states have call successors, (21), 8 states have call predecessors, (21), 9 states have return successors, (19), 11 states have call predecessors, (19), 11 states have call successors, (19) Word has length 106 [2022-11-22 02:28:54,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:55,025 INFO L225 Difference]: With dead ends: 12033 [2022-11-22 02:28:55,025 INFO L226 Difference]: Without dead ends: 6099 [2022-11-22 02:28:55,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 268 SyntacticMatches, 11 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 173.0s TimeCoverageRelationStatistics Valid=462, Invalid=2618, Unknown=0, NotChecked=0, Total=3080 [2022-11-22 02:28:55,050 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 202 mSDsluCounter, 5200 mSDsCounter, 0 mSdLazyCounter, 8693 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 5817 SdHoareTripleChecker+Invalid, 8744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 8693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:55,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 5817 Invalid, 8744 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 8693 Invalid, 0 Unknown, 0 Unchecked, 50.4s Time] [2022-11-22 02:28:55,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6099 states. [2022-11-22 02:28:55,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6099 to 6032. [2022-11-22 02:28:55,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6032 states, 4147 states have (on average 1.4685314685314685) internal successors, (6090), 4363 states have internal predecessors, (6090), 1427 states have call successors, (1427), 436 states have call predecessors, (1427), 457 states have return successors, (1767), 1338 states have call predecessors, (1767), 1416 states have call successors, (1767) [2022-11-22 02:28:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6032 states to 6032 states and 9284 transitions. [2022-11-22 02:28:55,670 INFO L78 Accepts]: Start accepts. Automaton has 6032 states and 9284 transitions. Word has length 106 [2022-11-22 02:28:55,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:55,671 INFO L495 AbstractCegarLoop]: Abstraction has 6032 states and 9284 transitions. [2022-11-22 02:28:55,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 18 states have internal predecessors, (56), 12 states have call successors, (21), 8 states have call predecessors, (21), 9 states have return successors, (19), 11 states have call predecessors, (19), 11 states have call successors, (19) [2022-11-22 02:28:55,671 INFO L276 IsEmpty]: Start isEmpty. Operand 6032 states and 9284 transitions. [2022-11-22 02:28:55,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-22 02:28:55,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:55,678 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:55,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:28:55,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:28:55,891 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:28:55,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:55,891 INFO L85 PathProgramCache]: Analyzing trace with hash 555137121, now seen corresponding path program 1 times [2022-11-22 02:28:55,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:55,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650947253] [2022-11-22 02:28:55,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:55,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:28:56,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:56,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650947253] [2022-11-22 02:28:56,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650947253] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:28:56,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336205052] [2022-11-22 02:28:56,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:56,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:28:56,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:28:56,278 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:28:56,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 02:28:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:56,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-22 02:28:56,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:28:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-22 02:28:57,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:28:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:28:57,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336205052] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:28:57,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1145675970] [2022-11-22 02:28:57,386 INFO L159 IcfgInterpreter]: Started Sifa with 95 locations of interest [2022-11-22 02:28:57,386 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:28:57,387 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:28:57,387 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:28:57,387 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:29:01,150 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 582 for LOIs [2022-11-22 02:29:11,996 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 510 for LOIs [2022-11-22 02:29:12,197 INFO L197 IcfgInterpreter]: Interpreting procedure initTopDown with input of size 607 for LOIs [2022-11-22 02:29:14,267 INFO L197 IcfgInterpreter]: Interpreting procedure initFloors with input of size 581 for LOIs [2022-11-22 02:29:14,475 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 445 for LOIs [2022-11-22 02:29:14,565 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 445 for LOIs [2022-11-22 02:29:14,637 INFO L197 IcfgInterpreter]: Interpreting procedure bobCall with input of size 581 for LOIs [2022-11-22 02:29:18,103 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 585 for LOIs [2022-11-22 02:29:18,702 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 513 for LOIs [2022-11-22 02:29:18,843 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:29:53,148 WARN L233 SmtUtils]: Spent 7.35s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:30:00,806 WARN L233 SmtUtils]: Spent 7.34s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:30:09,843 WARN L233 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 780 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:30:29,172 WARN L233 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 622 DAG size of output: 595 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:30:35,456 WARN L233 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 622 DAG size of output: 597 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:30:43,893 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 630 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:30:50,362 WARN L233 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 628 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:31:06,808 WARN L233 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 634 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:31:13,431 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 632 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:31:21,160 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 637 DAG size of output: 603 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:31:27,824 WARN L233 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 637 DAG size of output: 603 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:31:35,642 WARN L233 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 640 DAG size of output: 604 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:31:42,332 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 638 DAG size of output: 604 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:31:50,305 WARN L233 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 643 DAG size of output: 606 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:31:57,093 WARN L233 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 641 DAG size of output: 605 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:31:57,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1145675970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:57,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:31:57,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [10, 8, 10] total 52 [2022-11-22 02:31:57,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236506316] [2022-11-22 02:31:57,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:57,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-22 02:31:57,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:57,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-22 02:31:57,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=2235, Unknown=0, NotChecked=0, Total=2652 [2022-11-22 02:31:57,105 INFO L87 Difference]: Start difference. First operand 6032 states and 9284 transitions. Second operand has 33 states, 25 states have (on average 2.36) internal successors, (59), 19 states have internal predecessors, (59), 13 states have call successors, (22), 8 states have call predecessors, (22), 9 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) [2022-11-22 02:32:04,249 WARN L233 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 618 DAG size of output: 583 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:32:10,822 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 624 DAG size of output: 589 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:32:17,254 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 605 DAG size of output: 586 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:32:23,098 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 605 DAG size of output: 586 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:32:32,351 WARN L233 SmtUtils]: Spent 8.50s on a formula simplification. DAG size of input: 609 DAG size of output: 589 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:32:41,295 WARN L233 SmtUtils]: Spent 8.63s on a formula simplification. DAG size of input: 615 DAG size of output: 595 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:33:22,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:33:22,939 INFO L93 Difference]: Finished difference Result 12034 states and 18561 transitions. [2022-11-22 02:33:22,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-22 02:33:22,940 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 25 states have (on average 2.36) internal successors, (59), 19 states have internal predecessors, (59), 13 states have call successors, (22), 8 states have call predecessors, (22), 9 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) Word has length 112 [2022-11-22 02:33:22,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:33:22,971 INFO L225 Difference]: With dead ends: 12034 [2022-11-22 02:33:22,971 INFO L226 Difference]: Without dead ends: 6100 [2022-11-22 02:33:22,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 282 SyntacticMatches, 13 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1109 ImplicationChecksByTransitivity, 199.8s TimeCoverageRelationStatistics Valid=496, Invalid=2810, Unknown=0, NotChecked=0, Total=3306 [2022-11-22 02:33:22,996 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 307 mSDsluCounter, 3402 mSDsCounter, 0 mSdLazyCounter, 7638 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 7725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 7638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:33:22,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 3899 Invalid, 7725 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [87 Valid, 7638 Invalid, 0 Unknown, 0 Unchecked, 43.8s Time] [2022-11-22 02:33:23,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6100 states. [2022-11-22 02:33:23,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6100 to 6033. [2022-11-22 02:33:23,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6033 states, 4148 states have (on average 1.4681774349083896) internal successors, (6090), 4364 states have internal predecessors, (6090), 1426 states have call successors, (1426), 437 states have call predecessors, (1426), 458 states have return successors, (1757), 1337 states have call predecessors, (1757), 1415 states have call successors, (1757) [2022-11-22 02:33:23,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6033 states to 6033 states and 9273 transitions. [2022-11-22 02:33:23,572 INFO L78 Accepts]: Start accepts. Automaton has 6033 states and 9273 transitions. Word has length 112 [2022-11-22 02:33:23,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:33:23,572 INFO L495 AbstractCegarLoop]: Abstraction has 6033 states and 9273 transitions. [2022-11-22 02:33:23,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 25 states have (on average 2.36) internal successors, (59), 19 states have internal predecessors, (59), 13 states have call successors, (22), 8 states have call predecessors, (22), 9 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) [2022-11-22 02:33:23,573 INFO L276 IsEmpty]: Start isEmpty. Operand 6033 states and 9273 transitions. [2022-11-22 02:33:23,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-22 02:33:23,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:33:23,581 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:33:23,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-22 02:33:23,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-22 02:33:23,789 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:33:23,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:33:23,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1245449919, now seen corresponding path program 1 times [2022-11-22 02:33:23,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:33:23,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318646572] [2022-11-22 02:33:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:33:23,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:33:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:33:24,246 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 18 proven. 19 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-22 02:33:24,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:33:24,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318646572] [2022-11-22 02:33:24,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318646572] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:33:24,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63308416] [2022-11-22 02:33:24,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:33:24,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:33:24,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:33:24,249 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:33:24,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7ac648f-9f34-4c68-82d4-27c6c8a8a4d5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 02:33:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:33:24,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:33:24,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:33:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-22 02:33:24,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:33:24,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63308416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:33:24,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:33:24,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-11-22 02:33:24,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682055938] [2022-11-22 02:33:24,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:33:24,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:33:24,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:33:24,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:33:24,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:33:24,838 INFO L87 Difference]: Start difference. First operand 6033 states and 9273 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-22 02:33:25,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:33:25,461 INFO L93 Difference]: Finished difference Result 10345 states and 16317 transitions. [2022-11-22 02:33:25,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:33:25,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 183 [2022-11-22 02:33:25,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:33:25,493 INFO L225 Difference]: With dead ends: 10345 [2022-11-22 02:33:25,493 INFO L226 Difference]: Without dead ends: 6340 [2022-11-22 02:33:25,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:33:25,515 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 33 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:33:25,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1249 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:33:25,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6340 states.